per
Isfahan University of Technology - Journal of Crop Production and Processing
2251-8517
2251-8525
2009-04
13
47
411
420
article
Formulation of Orange Beverage Based on Cantaloupe Seed and Evaluation of Its Properties During Storage Time
H Baghaee
1
F SHahidi
fshahidi@ferdowsi.um.ac.ir
2
M.J Vriadi
3
M Nasiri Mahalati
4
Cantaloupe (Cucumis melo L.) is one of the most important melons in Iran especially in Khorasan province. The cantaloupe seed is a good functional and nutritional source for human, having large amounts of essential amino acids and unsaturated fatty acids. In spite of nutritional and functional aspects, it does not have considerable applications in food industry yet. Cantaloupe seed milk's pH is about 6.8, so cannot be stored for a long time. In this work, pH of cantaloupe seed milk decreases to 4.15 in 3 treatments (citric acid, orange concentrate, and orange sacs) and a constant amount of lemon juice. At first, nutritive value of seed milk was measured. According to results, this milk is a good source of protein (1.52%), phosphorus (41/3 ppm) and potassium (17 ppm). After that, storage stability of cantaloupe seed beverage at refrigerator temperature (4 °C) for 42 days was evaluated by analyzing changes in the chemical, microbial and sensory properties. The results showed that the orange concentrate-cantaloupe seed beverage reached the highest score of total acceptance (3.67 on a 5-point hedonic scale). In these conditions, we couldn’t find any molds and yeasts in the samples, thus the shelf life of the mentioned beverage could be 6 weeks at 4 °C.
http://jcpp.iut.ac.ir/article-1-1064-en.pdf
Cantaloupe seed beverage
Seed milk
Functional beverage
Nutritive value
Beverage formulation.
per
Isfahan University of Technology - Journal of Crop Production and Processing
2251-8517
2251-8525
2009-04
13
47
423
435
article
Optimization of Extracting Conditions of Inulin from Iranian Artichoke With/without Ultrasound Using Response Surface Methodology
S Abbasi
sabbasifood@modares.ac.ir
1
H Farzanmehr
2
Nowadays, Inulin, due to its nutritional properties, is widely being used all over the world. Artichoke tuber is one of its major industrial extraction sources. Therefore, in the present study we initially aimed to determine total carbohydrate, inulin, reducing sugars as well as dry matter contents of an Iranian artichoke. Thereafter, we focused on the optimization of aqueous extraction of inulin in the presence and absence of direct and indirect ultrasonic waves at various combinations of extraction time, temperature and solvent:solid ratio using Box-Behnken design and response surface methodology (RSM). Based on the experiments, the dry matter and total carbohydrate contents of Iranian artichoke were 6.7 and 3.9%, respectively. We also found that an empirical model developed by RSM could satisfactorily describe relationship between independent parameters and the yield of total carbohydrate as well as inulin. Furthermore, our findings revealed that optimal aqueous extraction of inulin could be achieved at 80ºC, for a duration of 5 min at a solvent:solid ratio of 1:5. Moreover, a direct relation was seen between the yield of extraction and the power as well as frequency of ultrasonic waves where with increasing latter variables, duration of extraction process and inulin yield considerably reduced and increased, respectively.
http://jcpp.iut.ac.ir/article-1-1065-en.pdf
Artichoke
Inulin
Total carbohydrate
Ultrasound
Response surface methodology.
per
Isfahan University of Technology - Journal of Crop Production and Processing
2251-8517
2251-8525
2009-04
13
47
437
442
article
Effect of Tea Plucking Time on Black Tea Quality
SH Rofigari haghighat
sh354haghat@yahoo.com
1
S Sabori Helestani
2
K CHeraghi
3
S.A.T SHokrgozar
4
Changes in black tea quality were studied for three subsequent years and in different times of plucking (spring, summer and autumn) in the form of two leaves and a bud. Percentage of waste, total sensory scores, total soluble solid, caffeine, theaflavin, thearobigin, total color and brightness were evaluated in black tea. The data were analyzed in split plot design based on randomized complete blocks. In hybrid tea, quality parameters in second time of plucking (summer) were high. In clone 100, total soluble solid and caffeine were in summer 1.85, 0.18 and 6.14, 0.79 more than spring and autumn tea, respectively. Total sensory scores, thearobigin and total color were more in spring and summer than autumn. The waste in autumn was more than spring and summer. Hybrid tea and clone 100 were significantly different in quality characters but not in waste amount (P<0.05).
http://jcpp.iut.ac.ir/article-1-1066-en.pdf
Black Tea
Plucking Time
Quality
per
Isfahan University of Technology - Journal of Crop Production and Processing
2251-8517
2251-8525
2009-04
13
47
445
459
article
Study of Water Loss Kinetics and Quality Characteristics of The Tomato Slices During Drying by Three Methods: Solar Drying,Open-Sun Drying and Hot Air Drying
A Akbari
1
M SHahedi
shahdim@cc.iut.ac.ir
2
N Hmadami
3
SH Dokhani
4
M Sadeghi
5
Sun drying is a well-known food preservation technique that reduces the moisture contents of agricultural products. Shrinkage, rehydration ability and color of food materials during air drying adversely affect the quality of the dried products. Since all fresh tomatoes can not be consumed at the time of harvest, preservation provides a larger market, allowing consumers to buy the preserved tomato through the year. A natural convection solar dryer consisting of a solar air heater and a drying chamber was manufactured in this research. Tomato slices were dried in the solar dryer and compared with open sun drying. Also, tomato slices were dried in a laboratory oven (operated at temperature 50, 60, 70, 80°C). With increasing the temperature, the time required to arrive certain moisture content is decreased. Also results showed that drying time in the solar dryer is shorter than open sun drying. In other words, drying time was reduced 17 to 45% by the solar drying in comparison to open – sun drying. The experimental shrinkage data showed a linear behavior with moisture content. Also, the experimental data didn't show a strong effect of temperature on the rehydration ability of the product. Thus, the effect of temperature and method of sun drying on the shrinkage phenomenon and the rehydration ability can be neglected. Tomato slices dried at 50°C had better appearance (lightness and red color) than at 80°C.
http://jcpp.iut.ac.ir/article-1-1067-en.pdf
Tomato
Drying
Shrinkage
Rehydration ability
Solar dryer
Color.
per
Isfahan University of Technology - Journal of Crop Production and Processing
2251-8517
2251-8525
2009-04
13
47
461
470
article
Effects of Ewe Milk, Milk Replacer and Three Starter Diets on Microbial Protein Synthesis, Rumen Fermentation, Blood and Urinary Metabolites in Dalagh Breed Suckling Lambs
A GHarehbash
ghareh44@yahoo.com
1
T GHorchi
2
S Hasani
3
N Torbatinejad
4
H Mansori
5
This study was carried out to compare the effects of ewe milk with commercial milk replacer and starter diet with different levels of concentrate on microbial protein synthesis, ruminal fermentation and blood metabolites in the suckling lambs. Thirty Dalagh breed male lambs were separated from their mothers on 3±1 days of age and divided into 6 groups (5 lambs per treatment), and reared in individual cages. Lambs were fed with 6 treatment diets for 90 days age. Treatment diets consisted of 2 fluid feed (ewe milk and milk replacer) and 3 starter diets, 1: 100% concentrate, 2: 67% concentrate and 33% alfalfa hay and 3: 33% concentrate and 67% alfalfa hay. Data were analyzed as a completely randomized design according to 3×2 factorial method. Average of rumen fluid pH, total volatile fatty acids (TVFA), ammonia nitrogen (NH3-N), blood urea nitrogen (BUN), beta hydroxyl butyrate (BHBA), urinary purine derivative excretion (PD), microbial purines (MPD) and microbial nitrogen supply (MN) in lambs fed with ewe milk and milk replacer did not show any significant differences (P>0.05). Average of pH, TVFA (P<0.01), BHBA and MPD, MN were significantly different and higher on lambs fed with starter diet of 100% concentrate than other starter diets (P<0.05). Feeding suckling lambs with all the 3 starter diets affected PD and allantoin to creatinine ratio (P<0.05). This experiment demonstrated that lambs could be reared with milk replacer, without any efeect on microbial protein synthesis, rumen and blood metabolites. Feeding starter diet containing high concentrate to suckling lambs increased microbial protein synthesis and improved rumen and blood metabolites.
http://jcpp.iut.ac.ir/article-1-1068-en.pdf
Milk replacer
Starter diet
Suckling lambs
Microbial protein synthesis
Fermentative metabolites.
per
Isfahan University of Technology - Journal of Crop Production and Processing
2251-8517
2251-8525
2009-04
13
47
473
483
article
Effect of Leptin Fluctuation on Parity, BCS and Reproductive Status in Dairy Cows
S Shrifi
1
H Rahmani
hrahmani@cc.iut.ac.ir
2
M Motamedi
3
In dairy cattle, the increase in milk yield has been accompanied by a more negative energy balance during early lactation and a decrease in fertility. The 167 amino acid protein product of the ob gene was named leptin (derived from the Greek term ‘leptos’ meaning thin). The leptin hormone, as a 16-kDa protein is synthesized mainly by adipose tissue and is involved in regulation of food intake, energy balance, fertility and immune function. The expression and secretion of leptin are correlated with body fat mass and are acutely affected by changes in food intake. The objective of this study was to investigate the fluctuations of leptin concentrations during late pregnancy and early lactation, the effect of parity and BCS on plasma leptin concentration, and to investigate its fluctuation effects on reproductive status. Blood samples of 54 Holstein cows were taken at a fixed time of the day after milking but before feeding, from 2 weeks before calving until 6 weeks after calving. BCS and plasma leptin concentration were measured at 2-wk intervals. Leptin concentrations were affected by parity. Primiparous cows and cows in first parity had higher leptin concentrations compared with multiparous cows (P<0.05). Leptin concentration was not different in late pregnancy and early lactation. BCS was negatively correlated with plasma leptin concentration (P<0.05). Plasma leptin concentration did not influence reproductive traits (days in milk at first breeding, service per conception and open days).
http://jcpp.iut.ac.ir/article-1-1069-en.pdf
Leptin
Body condition score
Reproduction
Parity.
per
Isfahan University of Technology - Journal of Crop Production and Processing
2251-8517
2251-8525
2009-04
13
47
485
493
article
Effects of Electron-Beam Irradiation on the Dry Matter, Neutral and Acid Detergent Fiber Degradation Parameters of Sugarcane Bagasse
H SHahbazi
hossein_shahbazi39@yahoo.com
1
A Sadeghi
2
H Fazaeli
3
GH Reis ali
4
M CHamani
5
In this research, samples of sugarcane bagasse were irradiated with various amounts (0, 100, 200 and 300 Kilogray) in an electron accelerator (TT200) to evaluate the effects of electron-beam irradiation on dry matter, neutral-detergent fiber (NDF) and acid-detergent fiber (ADF) degradability parameters. The first samples were dried and then ground for chemical analysis. The ruminal degradation parameters of the samples were measured in fistulated cow 3 (400 kg) at times of 0, 6, 12, 24, 48, 72 and 96 h by the terylene bag method. Data were fitted to non-linear degradation model of Orskov and McDonald to calculate degradation parameters of DM, NDF and ADF. The statistical analysis of degradation of various parameters and effective degradability was accomplished by using the GLM procedure of SAS. After variance analysis, the means were compared with Duncan,s new multiplerange test by using a completely randomized design. The washout fractions of DM as well as NDF and ADF increased linearly (P<0.05) with increasing electron irradiation dose, whereas the potentially degradable fractions of NDF and ADF decreased at first, and then, increased. Also, the degradation rate of the b fraction of dry matter increased. Effective degradability of DM, NDF and ADF increased linearly (P<0.05) with increasing irradiation dose. Electron irradiation at doses of 100, 200 and 300 kGy increased the effective degradability of DM, NDF and ADF at rumen outflow rate of 0.05/h (r) by about 7, 11 and 16% 2, 5 and 7% 3, 7 and 10%, respectively.
http://jcpp.iut.ac.ir/article-1-1070-en.pdf
Electron irradiation
Sugarcane bagasse
Degradability parameters
Dry matter
neutral and acid detergent fiber.
per
Isfahan University of Technology - Journal of Crop Production and Processing
2251-8517
2251-8525
2009-04
13
47
495
502
article
Influence of Two Drying off Methods on Udder Health Index In Holstein Cows Given Short Dry Period
M Hoseeini GHafari
mortwza.h.g.@gmail.com
1
GH GHorbani
2
H Rahmani
3
This study was conducted to determine the influence of two intermittent (1wk) and abrupt drying off methods on udder health index of dairy cows with 30d dry period. Eighteen multiparous dairy cows were dried off approximately 4 wk prior to the expected calving time in a completely randomized design. For intermittent milk cessation treatment, cows were dried off in the following manner. Milk samples were collected from front and rear quarters at 7d to 3d prior to drying off, at drying off, 14d, 7d prior to calving, at calving, and 7d post calving. Milk yield at drying off day was recorded. Lacteal secretion samples were stored at -18Ċ and used for lactoferrin quantitation. Other samples were stored at 4Ċ for somatic cell count, total bacteria count and other milk components. The results indicated that, there were no differences in fat, protein and lactose percentages and milk pH between two drying off methods (P>0.05). However, there was a significant effect of drying off methods on lactoferrin concentration it was higher in dairy cows dried off by intermittent milk cessation, applied in 2 and 1 wk prior to calving time (P<0.01). Total bacteria count was not different in the two drying off methods. Milk total bacteria counts was higher in rear quarters compared to front quarters (P<0.05). Milk somatic cell counts were higher in cows dried off by abrupt milk cessation (P<0.05). There was a positive correlation between milk somatic cell counts and total bacterial counts (r = 0.352, P<0.01). No significant difference was observed in colostrum and milk lactoferrin concentration, somatic cell counts, fat, protein and lactose percentages, between rear and front quarters. With respect to higher lactoferrin concentration in cows dried off by intermittent milk cessation and due to antibacterial action of lactoferrin against mastitis pathogens, it seem that intermittent milk cessation treatment is preferred for cows given short dry period.
http://jcpp.iut.ac.ir/article-1-1071-en.pdf
Drying off methods
Short dry period
Intramammary infection
Lactoferrin
Somatic cell.
per
Isfahan University of Technology - Journal of Crop Production and Processing
2251-8517
2251-8525
2009-04
13
47
505
518
article
Study of Genetic Parameters of Endosperm Related- Traits in Crosses of Rice (Oryza sativa L.)
SH Kiani
shlkiani@yahoo.com
1
N Babaeeian Jelodar
2
Gh Ranjbar
3
S.K Kazemi Tabar
4
M Norouzi
5
In order to study gene action in rice for traits related to quality (gelatinization temperature, gel consistency and amylose content), four varieties of rice (Sang-e-Tarrom, Gerdeh, IRRI2 and IR229) were investigated. Ten different generations including P1, P2, F1, RF1, BC1, RBC1, BC2, RBC2, F2 and RF2 were evaluated using generation mean analysis. In generation mean analysis, one of non-allelic interaction components, [i], [j]1, [j]2, [l]1, [l]2, [l] was significant indicating the genetic model of these characters were described by additive-dominance model with non-allelic gene interaction (except for gelatinization temperature trait in Sang-Tarrom × Gerdeh cross). The cross IRRI2×IR229 showed duplicate epistasis for gel consistency trait. Cytoplasmic effects and interactions between cytoplasmic and nuclear effects in two crosses were significant for amylose content and gel consistency traits. The estimation of narrow and broad-sense heritability for two crosses were 0.77 to 0.99 and 0.05 to 0.93, respectively. The predominantly additive nature of the genetic variability was further revealed by the variance components. Component D was detected significant in all the crosses. The covariance component and , however, showed indirectly that dominance contributed significantly to variability at the variance level. Therefore, according to the obtained results, selection can be effectively done in later segregation generations for gel consistency and amylose content and in early generation for traits.
http://jcpp.iut.ac.ir/article-1-1072-en.pdf
Generation mean analysis
Endosperm traits
Gene effect
Grain quality
Rice.
per
Isfahan University of Technology - Journal of Crop Production and Processing
2251-8517
2251-8525
2009-04
13
47
519
528
article
Study of Combining Ability in Five Varieties of Rice (Oryza sativa L.) for Six Morphological Traits Using a Diallel Cross Mating Design
L Ahangar
1
Gh Ranjbar
ali.ranjbar@gmail.com
2
M Norouzi
3
Six morphological traits of rice were evaluated in a 5 × 5 one-way diallel cross using a randomized complete block design corresponding with their F1 generations in 2007 at Iranian Rice Research Institute – Amol. Results from analysis of variance for traits of plant height, flag leaf angle, flag leaf length, flag leaf width, internode length and panicle length exhibited significant genetic differences among parental cultivars and their hybrids. Significant means of squares for GCA and SCA showed the positive actions of additive and non-additive effects on controlling these traits. Also, ratio of mean squares of GCA on SCA ( ) were significant in all traits that showing a higher importance for role of additive effects in comparison with role of non-additive effects in functions of genes controlling the studied traits. High narrow sense heritability of these traits proved majority roles for additive effects of genes in genetic control of the studied characteristics therefore, selection of these triats may be succeed. Overall, both of Neda and IR62871-175-1-10 were the best parents for general combining ability for reducting plant height, flag leaf length and internode length and increasing flag leaf width. Meanwhile, because of higher SCA, Neda × Binam and Neda × Dasht were the best hybrids for increasing spike length and decreasing height, respectively.
http://jcpp.iut.ac.ir/article-1-1073-en.pdf
Rice
Diallel cross
Morphological traits
General combining ability
Specific combining ability.
per
Isfahan University of Technology - Journal of Crop Production and Processing
2251-8517
2251-8525
2009-04
13
47
529
543
article
Evaluation of Different Grouping Methods of Rapeseed Genotypes Using Fisher’s Linear Discrimination Function Analysis
B Rabiei
rabiei@guilan.ac.ir
1
M Rahimi
2
Discrimination function analysis is a method of multivariate analysis that can be used for determination of validity in cluster analysis. In this study, Fisher’s linear discrimination function analysis was used to evaluate the results from different methods of cluster analysis (i.e. different distance criteria, different cluster procedures, standardized and un-standardized data). Furthermore, Hotelling T2, CCC plot and multivariate analysis of variance were used to support the results. To achieve the goals, 8 rapeseed genotypes were planted in a randomized complete block design with three replications in Rice Research Institute of Iran, Rasht, durin 2005-2006, and 14 characteristics were measured. Analysis of variance based on the randomized complete block design showed significant differences between genotypes for all the studied traits. Comparison of means between genotypes indicated that the genotype Hyola401 for grain yield and most of the measured characteristics was better than the other genotypes. Evaluation of phenotypic and genotypic coefficient of variations showed that most of the traits had high variability in the population. Discrimination function analysis showed that the Euclidean distance criterion was better than others and a desirable clustering was obtained by this criterion. Also, all of the data standardization methods produced similar clusters and were better than un-standardized data. Based on evaluation of dendrograms derived from different methods of cluster analysis determined that the UPGMA, complete linkage and Ward’s minimum variance methods were better than the other methods, and grouped the genotypes into three clusters. Fisher’s linear discrimination function analysis showed that UPGMA and Ward's minimum variance methods with clustering validity of 87.5 percent, was more suitable than other cluster analysis methods however, discrimination analysis grouped genotypes into two clusters. Tests of Hotelling T2, CCC plot and multivariate analysis of variance supported the results from the discrimination function analysis. It seems that the UPGMA and Ward's minimum variance procedures based on Euclidean distance criterion of standardized data function better in grouping genotypes, yet, the use of discrimination function analysis is recommended to confirm the results and determine the actual groups.
http://jcpp.iut.ac.ir/article-1-1074-en.pdf
Data standardization
Fisher’s linear discrimination function analysis
Cluster analysis
Rapeseed
per
Isfahan University of Technology - Journal of Crop Production and Processing
2251-8517
2251-8525
2009-04
13
47
545
555
article
Effects of Planting Pattern and Level of Soil Moisture on Yield and Yield Components of Two Safflower Cultivars in Isfahan
N Pourghasemin
1
M Zahedi
mzahedi@cc.iut.ac.ir
2
This experiment was conducted at the Agricultural Research Station of Isfahan University of Technolgy in 2006 to evaluate the effects of planting pattern and the level of soil moisture on two safflower cultivars. A factorial split plot arrangement was used in a randomized complete block design with three replications. Two planting patternS (flat and bed planting) and two levels of soil moisture (irrigation after 80 and 100 mm cumulative evaporation from Class A pan) were considered as the main factor and two safflower cultivars (IL 111 and Kosseh) as minor factor. Each plot in flat planting consistedof six rows, spaced 25 cm apart with plants 8 cm apart and in bed planting consisted of four rows, spaced 45cm apart with plants 5 cm apart. The duration from planting to button formation, 50% flowering, and 100% flowering stage were significantly shorter in 45cm bed planting than in 25cm flat planting. The duration from planting to all growth stages was less in IL 111, compared to Kosseh cultivar. The level of soil moisture did not affect the duration of any growth stages. Plant height, leaf area index, plant dry matter, number of buttons per plant, number of grains per button, grain weight, and harvest index were higher in flat planting, compared to bed planting. Plant height, plant dry matter, number of buttons per plant, number of grains per button, grain weight, and harvest index were reduced as the level of soil moisture was decreased. Leaf area index and plant dry matter were not significantly affected by the level of soil moisture at 50% flowering stage. Regardless of the level of soil moisture and cultivar, the grain yield was 36% more in flat planting than bed planting. The grain yield was more at higher level of soil moisture and also in Kosseh than in IL 111. The oil percentage and oil yield was higher in flat planting, compared to bed planting and also in Kosseh than in IL 111. The oil percentage was not significantly affected by the level of soil moisture. However, the oil yield was decreased as the level of soil moisture was reduced. The highest amount (1168 kg/ ha) of oil yield was obtained from Kosseh in flat planting and the lowest amount (417 kg/ ha) was achieved from IL 111 in bed planting. The results from this experiment show that to obtain the optimum yield from summer planting in areas with similar conditions to that of this study the 25cm flat planting compared to the 45cm bed planting, and Kosseh compared to IL 111 cultivar seems to be superior.
http://jcpp.iut.ac.ir/article-1-1075-en.pdf
Planting Pattern
Irrigation
Safflower
Genotypes
Yield
Yield componets.
per
Isfahan University of Technology - Journal of Crop Production and Processing
2251-8517
2251-8525
2009-04
13
47
557
570
article
Evaluation of Yield Potential and Genetic Variation of Morphological, Agronomic and Qualitative Traits in Sainfoin Populations (Onobrychis viciifolia Scop.)
M.M Majidi
majidi@cc.iut.ac.ir
1
A Arzani
2
Sainfoin (Onobrychis viciifolia Scop.) is a perennial legume widely adapted to environmental conditions and has been successfully used as a pasture and hay forage in Iran. This experiment was carried out to investigate yield potential and genetic variation of morphological, agronomic and qualitative traits using 10 Iranian sainfoin populations. The experiment was conducted as a randomized complete block design with four replications ON Research Farm, Isfahan University of Technology. Results indicated that there are significance differences between populations for most of the traits. The estimates of heritabilities for forage yield, number of stem per plant, number of node and qualitative traits were over 50 percent. The high phenotypic and genotypic coefficients of variability for economic traits showed that a broad genetic diversity in this germplasem can be exploited in breeding programs. Significant differences were found among cuts and cut × population interaction for all characters. The third harvest produced 41.6 percent of total hay yield. Evaluation of traits related to forage quality revealed that the highest proportion of leaf to stem belong to Sarab and Oromieh populations (6.28 and 6.82, respectively). Crude protein percentage was significantly different among cultivars and Golpayegan population had the highest value for Crude protein percentage. Feridan, Khonsar and Golpayegan populations produced the highest dry matter yield in the first, second and third cut, respectively. These populations were found as the high potential accessions, which can be used as a source for agronomic and plant breeding research in the region.
http://jcpp.iut.ac.ir/article-1-1076-en.pdf
Sainfoin
Variation
Forage yield
Forage quality.
per
Isfahan University of Technology - Journal of Crop Production and Processing
2251-8517
2251-8525
2009-04
13
47
573
584
article
Comparison of Morphological Characteristics and Yield of Leafy Corn Hybrids with Commercial Hybrids in Tehran Region
S.A.M Modares Sanavi
modaresa@modares.ac.ir
1
B Amiri Larijani
2
SH KHalesro
3
In order to study the morphological characteristics and yield of leafy corn hybrids, and comparie them with those of commercial hybrids, an experiment was conducted in the research field of Agricultural College, Tarbiat Modares University in 2005. A complete block design was used with three replications. Hybrids were obtained from crosses between leafy inbred lines and also commercial inbred lines with leafy inbred. There was a significant difference in single crosses on above and below leaf number and area, biomass, leaf length, plant height and distance between ear and tassel, internodes length, ear height (p<0.01). The most and least above ear leaf number were for b7*a4 and commercial hybrids, respectively. Most of the leafy hybrids had more above and below leaf number than commercial hybrids. Some of leafy hybrids produced the same yield as commercial hybrids and the others produced more. Considerable yield increment in the leafy corn can be attributed to the fact that the leafy gene produce twice leaf area in corn. Internodes length reduced in leafy hybrids due to increasing leaf number without plant height increment. The maximum and minimum grain yield were for b2*a4 leafy hybrid (10.22 t/ha) and SC108 non-leafy commercial corn (6.37 t/ha) respectively. Generally, b7*a4 and b2*a4 leafy hybrids produced the most biomass and leafy hybrid b2*a4 had the most grain yield.
http://jcpp.iut.ac.ir/article-1-1077-en.pdf
Zea mays
Leafy inbred
Commercial hybrid
Morphological traits.
per
Isfahan University of Technology - Journal of Crop Production and Processing
2251-8517
2251-8525
2009-04
13
47
587
598
article
Evaluation of Seed Yield Potential and Traits in Species of Brassica ( B. napus, B. rapa, B. juncea ) under Rain Fed Conditions in Gonbad Area
A Faraji
1
h Hatamzadeh
hosseinhatamzadeh@yahoo,com
2
Development of oil seed crops is the most important aim in our country to achieve self sufficiency. This study was conducted to assess the suitability of oil brassicas species in rain-fed warm areas of Iran. This research was performed for three years in Agricultural Research stations of Gonbad (Golestan). Twenty varieties and hybrids (B. napus, B. rapa, B. juncea ) were compared in RCBD with three replications under rain fed conditions. Each plot had 4 rows 5-meter long. Combined analysis results indicated that there were significant differences at 1% probability level among years and varieties for No. of days to maturity, No. of pod per plant, oil%, oil and seed yield. The highest seed yield was obtained in the 2nd year (2103.48 kg.ha), followed by the 1th and 3rd year (1771.50 and 1575.13 kg.ha, respectively). Namely, year environment factor had a significant effect on the rape seed product. j-98-102.51-5 (B. juncea), Alexandra and comet (Spring B. napus) showed the highest seed yield (2484, 2326 and 2290 Kg.ha, respectively). Regression analysis via step by step method explained that No. of pod per plant and oil percentage had significant positive effects (508.53 and 96.48 respectively) and No. of days to maturity significant negative effect (-78.63) on the seed yield. Factor analysis extracted four factors. Factor loading of the first three eigen values showed that the first three factors explained 98.794%, sum of variance. Rates of first, second and third factors were 45.575%, 36.816% and 16.403%, respectively. The first factor, second factor and third factor were named productivity factor (seed yield and oil yield), sink factor (No. of pod per plant), fixed capital factor (No. of day to maturity and plant height) respectively. Generally, j-98-102.51-5, Alexandra and comet varieties are advisable for Fall planting under rain fed conditions in Gonbad area because they had the highest seed yield and earliness. Also, we can introduce less No. of days to maturity (earliness) and more No. of pod per plant as select index under rain fed conditions in Gonbad.
http://jcpp.iut.ac.ir/article-1-1078-en.pdf
Rapeseed
Seed yield
Rain fed conditions.
per
Isfahan University of Technology - Journal of Crop Production and Processing
2251-8517
2251-8525
2009-04
13
47
601
610
article
The Effect of Crop Rotation, Mineral Fertilizer Application and Herbicide on Weed Control in Winter Rye
H Mohamad Dost CHamanabad
hr_chamanabad@yahoo.com
1
A Asghari
2
The recent years' problems of herbicide use have led a growing number of researchers to seek alternative methods that are less reliant on herbicides. This research was conducted to determine the effect of long-term crop rotation, mineral fertilizer and herbicide on the weed infestation and grain yield of winter rye during 2004 and 2005 at the long-term experimental site of the University of Timiriazev, Moscow. Treatments were control (no weed control), herbicide, combined fertilizer (NPK) and NPK plus herbicide in field winter rye cultivated in continuous and crop rotation with other crops since 1912. Crop rotation significantly decreased weed density and dry mass. Long-term NPK application significantly decreased weed density, but had not any effect on weed dry mass. Crop rotation, NPK application and herbicide increased ground crop cover and decreased ground weed cover. In continuous crop, weed ground cover was 10 % in control plot and 3.33 % in plots where NPK was applied. Data showed that long-term crop rotation and NPK application can reduce weed infestation and increase grain yield of winter rye.
http://jcpp.iut.ac.ir/article-1-1079-en.pdf
Weed management
Crop rotation
Fertilizer
Herbicide
Winter Rye
per
Isfahan University of Technology - Journal of Crop Production and Processing
2251-8517
2251-8525
2009-04
13
47
611
620
article
Effect of Ascorbic Acid (Vitamin C) Leaf Feeding on Antioxidant Enzymes Activity, Proline Accumulation and Lipid Peroxidation of Canola (Brassica napus L.) under Salt Stress Condition
A Dolatabadian
1
A Modares Sanavi
modaresa@modares.ac.ir
2
M SHarifi
3
In order to study the effects of salt stress and leaf feeding by ascorbic acid on antioxidant enzyme activity, proline accumulation and lipid peroxidation on leaves and roots of Brassica napus L. cvs. Okapi, an experiment was conducted as a factorial in a completely random design with three replications. Plants were exposed to salt stresses by NaCl solution (200 mM) and foliar were treated by ascorbic acid solution (25mM). Catalase, Superoxide dismutase and peroxidase activity were assayed in shoot and root. Also, malondialdehyde content and proline and chlorophyll in leaves were determined. The results showed that the activity of all antioxidant enzymes (except for SOD in roots) were increased significantly in plants under salt stress, and ascorbic acid application, as a antioxidant decreased their activity in leaves, but in roots it was not effective. Total protein content in leaves and roots decreased significantly under salinity condition. Ascorbic acid treatment increased total protein content under salt stress in both roots and shoots. Measurement of malondialdehyde content in leaves and roots showed that lipid peroxidation was increased by active oxygen species due to salt stress, and ascorbic acid reduced lipid peroxidation only in leaves. Chlorophyll content was also decreased by salinity compared to control. According to the result of present study, ascorbic acid application decreases deleterious effect of salinity.
http://jcpp.iut.ac.ir/article-1-1080-en.pdf
Antioxidant enzymes
Salt stress
Ascorbic acid
Leaf feeding
Canola.
per
Isfahan University of Technology - Journal of Crop Production and Processing
2251-8517
2251-8525
2009-04
13
47
623
638
article
Effect of Irrigation Management on Grain Filling Rate, Grain Filling Duration and Leaf Relative Water Content on Three Rice (Oryza sativa L.) Cultivars
M Katozi
1
F Rahimzadeh KHouee
2
H Sabori
saboriho@yahoo.com
3
In order to study the relationship between grain filling rate, duration and leaf relative water content (RWC) and yield, an experiment was conducted at Rice Research Institute of Iran, as a randomized block design in Split Plot with 3 replications, in 2006. 5 irrigation levels as main factor (Continuously flooded, days after water banishment, 5, 8 and 11 day intervals immediately after 10 days of transplanting) and sub main factor were used with 3 rice cultivars, Bahar (hybrid), Dorfak (improved) and Ali kazemi (traditional).Bahar cultivar showed the highest (6710 km/h) yield in continuous conditions. And no significant difference was observed between continuous irrigation conditions and 5 day interval irrigation. In continuous irrigation condition (except 1 day after flowering), Dorfak cultivar in all sampling had the highest grain weight in grain filling duration, but in days after water banishment Bahar had the highest grain weight(2/41). Grain filling rate in Dorfak in all treatments was higher than Bahar, and in Ali kazemi in all treatment s it was higher than the other cultivars. In all sampling dates (8, 11, 14, 17, 20, 23, 26, 29 and 30day after heading), leaf relative water content of Ali kazemi was significantly less than Bahar and Dorfak. Dorfak produced the highest leaf relative water content. Results of the grain filling rate showed that Bahar with the longest grain filling duration and highest yield (6710 km/h) is more adaptable than Dorfak and Ali kazemi for different irrigation management conditions.
http://jcpp.iut.ac.ir/article-1-1081-en.pdf
Interval irrigation
RWC
Water deficit
Rice.
per
Isfahan University of Technology - Journal of Crop Production and Processing
2251-8517
2251-8525
2009-04
13
47
639
464
article
Effect of Plant Density and Harvesting Time on Oil and Protein Yield of Kochia (Kochia scoparia L. Schrad) under Saline Irrigation Conditions
S.M Ziaee
ziaee_agri85@yahoo.com
1
M Kafi
2
J SHabahang
3
H KHazaee
4
M Soleimani
5
Production of halophytes using saline waters and soils, and feeding livestock with them, is one of the most sustainable ways of desert ecosystems conservation and food production for people living in these areas. A field experiment was conducted at Salinity Research Station, Ferdowsi University of Mashhad, in 2007 to evaluate the effect of planting density and harvesting time on oil and protein yield of Kochia. Treatments were arranged as a split-plot based on a randomized complete block design with three replications. Planting density (10, 20, 30 and 40 plants m-2) as assigned to main plots and two dates of harvesting (after 50% flowering and full maturity) constituted the sub-plots. Plant density had a significant effect on grain yield, mean seed weight, harvest index, oil yield, oil content and protein yield at maturity stage. Forage and protein yield were also affected by plant density at the harvest date of 50% flowering. Total dry matter, protein yield and percentage differed significantly between the two harvest dates. The greatest grain yield (2590 kg ha-1) and oil yield (357.7 kg ha-1) were achieved from 20 plants m-2, whereas those from 10 plants m-2 were minimal. Maximum protein yield (3390 Kg ha-1) was obtained from the planting density of 30 plants m-2 at 50% flowering stage. Based on the results of this study, the best qualitative yields for Kochia could be obtained from a planting density of 30 plants m-2 after 50% flowering but one may recommend planting Kochia at 20 plants m-2 for a high grain or oil production.
http://jcpp.iut.ac.ir/article-1-1082-en.pdf
Kochia
Planting density
Oil yield
Protein yield
Flowering
Maturity.
per
Isfahan University of Technology - Journal of Crop Production and Processing
2251-8517
2251-8525
2009-04
13
47
649
656
article
Effect of Paclobutrazol and Cycocel on Vegetative Growth and Flowering of Zinnia (Zinnia elegans)
M Hojati
1
N Etemadi
etemadin@cc.iut.ir
2
B Bani Nasab
3
This study was conducted to evaluate the effects of paclobatrazol and cycocel on some quantitative and qualitative traits of zinnia. Seedlings were transplanted on Horticulture Department Farm , College of Agriculture, Isfahan University of Technology. The experiment was carried out in the framework of randomized complete block with 3 replications. Triats which were studied included plant height, leaf and flower number, lateral shoot number, flower diameter, lateral shoot lenght, leaf chlorophyl content, the period of the flowering, root fresh and dry weight, leaf area, root number, diameter and length, root and shoot carbohydrate. Results showed that cycocel at 1000 and 2000 ppm reduced height. Cycocel 2000ppm caused most lateral shoot and flower number and the lowest lateral shoot length. The lowest root fresh and dry weight, root number and length and shoot carbohydrate were obtained by cycoel 2000 ppm. Paclobutrazel at 30ppm resulted in the most leaf chlorophyl content. There were no significant differences between treatments related to the period of the flowering, flower diameter, leaf number and area, root diameter and carbohydrate.
http://jcpp.iut.ac.ir/article-1-1083-en.pdf
Cycocel
Flowering
Paclobutrazol
Vegetative growth
Zinnia.
per
Isfahan University of Technology - Journal of Crop Production and Processing
2251-8517
2251-8525
2009-04
13
47
659
666
article
Introducing The Best Mulching Media and Time of Culture for Hydromulching System and its Effect on The Quality and Quantity Aspect of Lawn
M Kafi
1
M Haghighi
maryam135300@yahoo.com
2
A Tehrani Far
3
GHolamhoseein Davari Nrjad
4
H Nemati
5
Turfgrass is important in urban landscape and by considering that organic matter has a important roll in improving physical and chemical soil characteristics using an organic matter instead of manure and MSW seems necessary .in this research the possibility of using new method of culture such as hydromulching (i.e. mixing seed, organic matter, water, and fertilizer and then distributing it) spent mushroom compost (SMC) has done .for these reason we use two level of SMC 6- month old and one –year old .in two time ,spring and autumn .the experiment design as a factorial Randomized Complete Block Design with 3 replications .Germination ,establishment ,uniformity ,density ,color was measured .results showed that SMC is better than manure especially 6-month old SMC as it is than one-year old SMC .in the spring establishment and germination is better . So using hydromulching by 6-month compost in spring is recommended.
http://jcpp.iut.ac.ir/article-1-1084-en.pdf
Germination
Mushroom Compost
Municipal Solid Wasl (MSW)
Mulch
Lawn
per
Isfahan University of Technology - Journal of Crop Production and Processing
2251-8517
2251-8525
2009-04
13
47
669
676
article
Identification of SSR Markers Linked to QTL for Fusarium Head Blight Resistance in Wheat
A.H Hosseinzadeh
1
I Bernousi
ibernosi@yahoo.com
2
M Mardi
3
M Bihamta
4
S Omidi
5
B Yazdi Samadi
6
Fusarium head blight (FHB) is one of the most destructive diseases of wheat causing significant reduction in grain yield and quality. Development of resistant varieties is an effective, economical and enviromentally safe way to control FHB disease. A major QTL (quantitative trait locus) for Fusarium head blight resistance, Qfhs.ndsu-3BS, derived from cv. Sumai 3, has been identified and verified by several research groups via molecular marker analysis. The resistant cv. Sumai 3 was crossed to susceptible cv. Falat, then three backcrosses were followed by one self-fertilization. Three simple sequence repeat (SSR) markers, Xgwm 389, Xgwm493, Xgwm533, were used for marker assisted selection (MAS) in BC1 and BC2 generations.The probability of linkage between markers and Qfhs.ndsu-3BS was calculated using a binomial probability function based on the assumption that a molecular marker at a specific distance from Qfhs.ndsu-3BS in the population would carry the donor-parent allel as a function of the distance between marker and QTL and the number of backcrosses/selfs used in deriving the population. Microsatelite locus Xgwm 493 was significantly associated with Qfhs.ndsu-3BS.
http://jcpp.iut.ac.ir/article-1-1085-en.pdf
Wheat
Fusarium head blight
Microsatelite markers
Quantitative trait loci(QTL).
per
Isfahan University of Technology - Journal of Crop Production and Processing
2251-8517
2251-8525
2009-04
13
47
679
690
article
Comparison of Some Technical Indexes on Conventional Tillage with Reduced Tillage Methods
E Dehghan
elyas_dehghan@yahoo.com
1
M Almasi
2
Soil tillage management for various crops in different regions needs use available indices and information about condition, manual manner, defects and preferences of various tillage methods. Therefore, this experiment was conducted in summer 2003 on clay soil containing wheat residual in Shawoor agricultural research center, situated in northern Ahwaz. Experiment was conducted as a Randomized Complete Block Design (RCBD). Treatments included: conventional tillage in one pass of moldboard plowing in 20cm depth + leveler (T1), two passes of disk harrow in 8-10cm depth + leveler (T2), two passes of disk harrow in 12-15cm depth + leveler (T3), one pass of cultivator in 10cm depth + leveler (T4), one pass of cultivator in 15cm depth + leveler (T5) and one pass of rotivator in 5cm depth (T6). The results showed that fuel consumption decreased for T2-T6 57, 51, 67, 54 and 69 % as compared to T1 (49 L/ha), respectively. Total operation time decrease in T2-T6 42, 46, 42, 54 and 44 % in comparison to T1 (4.41 h/ha) respectively. Field capacity increased for T2-T6 as much as 2.4, 2.2, 2.4, 1.8 and 2.3ha/h compared to T1, respectively. Mean weight diameter (MWD) index increased in T2-T5 29, 21, 10 and 5 % than T1 (1.92cm), respectively, but decreased 6% in T6. Mean tillage costs reduced in T2-T6 as much as 40, 32, 54, 50 and 60 % compared to T1 (500000 Rial/ha), respectively.
http://jcpp.iut.ac.ir/article-1-1086-en.pdf
Conventional tillage
Reduced tillage
Disk harrow
Cultivator
Rotivator.
per
Isfahan University of Technology - Journal of Crop Production and Processing
2251-8517
2251-8525
2009-04
13
47
693
704
article
Design, Fabrication and Evaluation of a Laser- Based Torque MeterFor Silage Corn Yield Monitoring
N SHahmirzaee
kamgar@shirazu.ir
1
S Kamgar
2
One of the most important goals of precision farming is preparing yield map. Recently in Iran, planting of corn has received special attention. Therefore, among the different methods of yield measurement such as using impact sensor at the outlet port of forage harvester (chopper), displacement sensors at feed rollers of forage harvester, continuous measurement of discharged material to trailing wagon and using the torque meter, the present study made use of the torque meter method. This method consisted of a torque transmitting shaft equipped with laser-based encoders to monitor twist in a real time mode. The unit output could be exported to a computer via a microcontroller installed into the interface device. For calibration of the torque meter output with material feed rate in lab conditions, a conveyor was used to feed homogenous amount of material at a specific rate to the chopper. The experiment was conducted at 3 feed rates of silage corn and at 3 feed roll speeds of the chopper with 3 replications. Correlation between the feed rate and recorded power at different gears of the chopper was established. Relationships between feed rate and recorded power of the chopper at gears 1, 2 and 3 were linear with calculated R2 of 0.95, 0,98 and 0.98, respectively.
http://jcpp.iut.ac.ir/article-1-1087-en.pdf
Torque meter
Laser sensor
Mass flow rate
Chopper
Silage corn.
per
Isfahan University of Technology - Journal of Crop Production and Processing
2251-8517
2251-8525
2009-04
13
47
705
716
article
Determination of Some Physical and Rheological Properties of Straw and Alfalfa Bales During Double Compressing
A Masoumi
masoumi@cc.iut.ac.ir
1
A SHahriari
2
To reduce storage space and transportation cost for alfalfa and straw bales, recompressing of the bales is recommended. In order to design different units and elements of double compressing device, some physical and rheological properties of desired products were determined. A factorial experiment with a randomized complete block design with three replications was used during the tests. Confined compression tests for three levels of axial strain (25, 35 and 45% of initial length) on alfalfa and straw bales were performed. In this study, the influence of the materials and strain on pressure, modulus of elasticity and required energy were investigated. The results showed that the effect of materials type and strain levels on the determined parameters were highly significant (P<0.01). The highest value of the measured parameter was obtained for straw bales at 45% strain. The Fabroad’s model (expressing the relationship between pressure and density) and two other models, namely, Sitki and Osbof which were used to describe the relationship between modulus of elasticity and density were fitted to the measured values, and then constants were determined for each model individually. The coefficients of friction for alfalfa and straw bales on steel and galvanized surfaces at three levels of perpendicular loads were determined. Effect of bales and surface types on frictional coefficient were not significant (P< 0.05), however, the effect of perpendicular load was highly significant (P<0.01). Tensile strength of hemp and nylon ropes, which are usually used to knot compressed bales, was measured. The results indicated that hemp ropes had more strength than nylon.
http://jcpp.iut.ac.ir/article-1-1088-en.pdf
Straw
Alfalfa
Physical properties
Rheological properties
Double compression.
per
Isfahan University of Technology - Journal of Crop Production and Processing
2251-8517
2251-8525
2009-04
13
47
717
726
article
Distribution of Alfalfa Nodulating Sinorhizobium meliloti and S. medicae in Western Regions of Iran
M Talebi
1
M Bahar
mbahar@cc.iut.ac.ir
2
GH Saeedi
3
A Mohamadi
4
To characterize the geographical distribution of medicago-nodulating rhizobia in western regions of Iran, 950 Sinorhizobium isolates were trapped from a combination of two local alfalfa populations (Hamedani, Nikshahri) together with a foreign cultivar ( Kodi) and soil samples from eight sites across Kurdestan, Kermanshah, Eastern Azarbayjan and Lorestan provinces. Also, a total of 45 isolates were obtained from nodules of naturally grown Melilotus officinalis (14 isolates) and Trigonella foenum-graecum (31 isolates) plants in Isfahan. On the basis of PCR partial amplification of the plasmid born nod box gene and chromosomal mucR gene of the isolates,16S ribosomal DNA PCR-restriction fragment length polymorphism analysis, and the nucleotide sequence, three isolates from alfalfa, seven isolates from M. officinalis and 13 isolates from T. foenum-graecum were proved to be Sinorhizobium medicae. The remaining isolates (943 from alfalfa, seven from M. officinalis and 18 from T. foenum-graecum) were identified as S. melilloti. Both species, S. meliloti and S. medicae, were recovered from nodules of all the hosts although S. meloti was clearly more dominant in nodulating different populations of alfalfa. Taken together, these results indicated that the abundance of S. meliloti is independent of the site of isolation and have a wide geographical distribution. In this study, the banding pattern resulting from PCR amplification of 16S rRNA gene, followed by digestion with Rsa I, clearly differentiated S. meliloti and S. medica strains, showing that PCR-RFLP is an appropriate method to discriminate medicago-nodulating rhizobian with relative rapidity.
http://jcpp.iut.ac.ir/article-1-1089-en.pdf
Medicago
Melilotus
Trigonella
Sinorhizobium meliloti
Sinorhizobium medicae
PCR-RFLP.
per
Isfahan University of Technology - Journal of Crop Production and Processing
2251-8517
2251-8525
2009-04
13
47
729
738
article
Evaluation of Genetic Diversity in Oyster Mushroom (Pleurotus eryngii) Isolates Using RAPD Marker
R Ravesh
1
B SHiran
2
A Alavi
azaizollaalavi
3
J Zarvagis
4
In this study, 45 Pleurotus isolates with a wide range of geographical origins (in five provinces of Iran: Isfahan, Chaharmahal Bakhtiary, Kohkiloye boyrahmad, Lorestan and Fars) were collected. A random amplified polymorphic DNA polymerase chain reaction (RAPD-PCR) was used to assess the genetic diversity in ten populations of the Pleurotus eryngii complex. The use of ten primers allowed the production of 150 polymorphic bands. In addition, the evalution of the principal ecological and morphological characters provided further evidence for discriminating between populations. The results show a higher level of diversity of RAPD polymorphism in the populations. 28.67% of the RAPD diversity was among populations and 71.33% was within populations. In the RAPD patterns, Pleurotus strains growing on Ferula assa-foetida, Ferula ovina and Prangus ferulacea formed distinct groups. In this study, the resolution of the RAPD-PCR analysis was better than the morphological analysis.
http://jcpp.iut.ac.ir/article-1-1090-en.pdf
Genetic diversity
RAPD marker
Oyster mushroom
Pleurotus eryngii
Host specificity.
per
Isfahan University of Technology - Journal of Crop Production and Processing
2251-8517
2251-8525
2009-04
13
47
741
748
article
Control of Wheat Common Bunt by Mustard Flour, Trichoderma Isolates and Biological Materials
M Mehrabi Koshki
1
D Zafari
zafari_D@basu.ac.ir
2
B Sharif Nabi
3
Recent studies have shown the controlling effects of Trichoderma species and extract of a few plant species of the Brassicaceae family on some phytopathogenic fungi. In this study, using a completely randomized blocks design in the field, controlling effect of biological agents comprising mustard flour, Trichoderma koningii T18, T. virens T59, T. brevicompactum T30, T. harzianum T56, mixture of four Trichoderma isolates, mustard flour + mixture of four Trichoderma isolates and two commercial biological product of Trichodermin B and Subtilin were evaluated against wheat common bunt caused by Tilletia laevis. According to the infection index, all treatments were able to reduce infection percentage and showed significant differences (P<0.01) compared to control (infected with T. laevis without any biological agent) in which heads infection was 43.5%. Treatments of Mustard flour and mustard flour + mixture of four isolates, reduced the disease by 89.9% and 87.4% respectively. Consequently, it seems that wheat common bunt could be controlled by application of non-infected seeds and by treating seeds using mustard flour without using chemical fungicides.
http://jcpp.iut.ac.ir/article-1-1091-en.pdf
Wheat common bunt
Mustard flour
Trichoderma Trichodermin B
Subtilin.
per
Isfahan University of Technology - Journal of Crop Production and Processing
2251-8517
2251-8525
2009-04
13
47
749
755
article
Effect of Four Oilseed Rape Cultivars on Biological Parameters and Intrinsic Rate of Natural Increase of Brevicoryne brassicae (Hemiptera: Aphididae)
Sh Mimohamadi
hirin_m1180@yahoo.com
1
H Allahyari
2
M Nematolahi
3
A Sabouri
4
S Zarghami
5
Sh Khaghani
6
The cabbage aphid Brevicoryne brassicae L. is an important pest, which attacks the rape seed and causes economic damage. In this study, effects of four different cultivars of rape seed (Zarfam, Licord, Hyola 401, and SLM046) on biological parameters and intrinsic rate of increase of B. brassicae were studied in laboratory conditions (25±1ºC, 70±10 RH and of 14:10 (L:D) photoperiod). Results showed that maximum nymphal and reproductive period, longevity of insects were found on Licord cultivar. The maximum fecundity of adult aphid was seen on Hyola 401. There was no significant difference between duration of developmental stages, and aphid fecundity on different cultivars. The intrinsic rate of increase was calculated by Wyatt & White method. Estimated intrinsic rate of natural increase of aphid was 0.316, 0.294, 0.311, and 0.289 on Zarfam, Licord, Hyola 401, and SLM046, respectively. Although the lowest intrinsic rate of increase was observed on Zarfam, statistical analysis of Wyatt & White output showed there was not any significance difference between rm on different cultivars.
http://jcpp.iut.ac.ir/article-1-1163-en.pdf
Intrinsic rate of increase
Rape
Seed Cabbage aphid
Wyatt & White method
per
Isfahan University of Technology - Journal of Crop Production and Processing
2251-8517
2251-8525
2009-04
13
47
757
771
article
Agricultural Specialists\' Attitude toward and Intention for Application of VRT-Spraying Technologies Using Structural Equation Modeling
S Salehi
1
K Rezaee Moghadam
rezaei@shirazu.ac.ir
2
A Ajili
3
Variable rate technology-spraying technologies are new aspect of sustainable agriculture. In these technologies, the chemical is applied in the needed level of farm where there is a high intensity of pests and weeds. The purpose of this paper was to study the agricultural specialists' attitude toward and intention to use variable rate technology-spraying technologies in Jihad-e-Keshavarzi organization of Fars and Khuzestan provinces. A survey was conducted using a stratified random sampling to collect data from 249 agricultural specialists. The results showed that the specialists of Fars and Khuzestan provinces have intentions to use the variable rate technology-spraying technologies. The variables including attitude toward application, trialing, perceived usefulness, compatibility, and attitude of confidence all influence the intentions to use the variable rate technology-spraying technologies. Based on high positive intention of agricultural specialists, we recommend the use of these technologies in agricultural practices of the two provinces.
http://jcpp.iut.ac.ir/article-1-1094-en.pdf
Variable rate technology-spraying (VRT-Spraying)
Attitude
Intention
Precision agriculture
Technology acceptance model.
per
Isfahan University of Technology - Journal of Crop Production and Processing
2251-8517
2251-8525
2009-04
13
47
773
784
article
Analysing Consequences of Increasing Acreage of Colza in Namdan Plain of Fars Province: An Application of Positive Mathematical Programming
A Mohseni
1
M Zibaei
zibaei@shirazu.ac.ir
2
Because of the fact that alternative agricultural policies cannot be examined in a laboratory, the potential effects of policies must be analyzed before policy setting, and during or after the policy implementation using mathematical programming (MP) models. In this context, the consequences of increasing the acreage of colza at representative farm (RF) level of Namdan plain were analyzed using positive mathematical programming (PMP), which were improved to overcome normative character of optimization models. The main aim of PMP is to give as true a picture as possible of the situation and then simulate the behavior of farmers as parameters in which the object of agricultural policy intervention is shifted. Based on the results of this study, reduction in the acreage of wheat and bean and increase in the expected profit of RFs are the consequences of increasing acreage of colza. But, as variance of profit increases, the net impact of policy on the expected utility of RFs is not perfectly known. The results also indicated that the use of pesticide increases through introducing colza into a cropping pattern. The effect of policy on water use is different among RFs and they can't take this policy as a water demand management policy.
http://jcpp.iut.ac.ir/article-1-1095-en.pdf
Policy analysis
Increasing acreage of colza
Positive Mathematical programming.
per
Isfahan University of Technology - Journal of Crop Production and Processing
2251-8517
2251-8525
2009-04
13
47
787
801
article
Application of Interactive Multiple Criteria Decision Making for Farm Planning: A Case Study of Fars Province
M Alwanchi
1
M Sabouhi
msabuhi39@yahoo.com
2
Optimum allocation on inputs is more difficult when there are several objectives in agriculture activities. For this, it is necessary using methods that several objectives approximate to ideal point simultaneously. IN addition, no attention to farmer preferences in farm planning causes the troubles for farmers in accepting planning. So in present study it is tried to attention these subjects with using interactive multiple criteria decision making, in farm planning for Fars province. Maximization gross margin, minimization risk and, irrigation water selected for planning objectives. Results indicated that interactive cropping pattern is convenient to present pattern rather than compromise method. In interactive cropping pattern, risk decreased compare to present and compromise cropping pattern that it is indicated tend to risk diminish in region farmers. In addition, the results designated that interactive models have the results better than multi objective and compromise programming because to be attention to farmers preference. With attention to research finding can say that it is possible for reformation of values three objective maximization gross margin, minimization risk and irrigation water rather than present cropping pattern.
http://jcpp.iut.ac.ir/article-1-1096-en.pdf
Farm planning
Interactive multiple criteria decision Making
Fars Province.