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Showing 3 results for Daneshian
Effects of Planting Pattern and Density on Yield of Soybean Genotypes under North Khuzestan Conditions
S. A. Kalantar Ahmadi, J. Daneshian, H. Tavakoli Hasanaklou, N. Tavakoli Hasanaklou,
Volume 5, Issue 17 (12-2015)
Abstract

In order to study the effects of planting pattern and plant density on yield of soybean genotypes, an experiment was carried out in Safiabad Agricultural Research Center, Dezful, Iran in 2011. The experimental design was a factorial strip plot based on completely randomized block design with 3 replications. Planting pattern consisted of 3 levels (60 cm with 1 planted row, 75 cm and 90 cm with 2 planted rows) as vertical factor, a factorial of plant density (30, 40 and 50 plant/m2) and genotypes (504, L14 and DPX) was considered as horizontal factors. The means of planting pattern × density showed that the highest number of pods/plant (52.85) belonged to 60 cm with single row of plants and 40 plant m-2. The lowest (28.35) number of pods/plant was observed in 90 cm with double rows planted and 50 plant m-2. The genotypes responded to planting density differently. The highest (4936.11 kg/ha) grain yield belonged to DPX genotype with 50 plants m-2. The lowest (4936.11 kg/ha) grain yield was achieved at L14 genotype with 30 plant m-2. The results of this expriment suggested that planting pattern of 60 cm with single row of plants, 50 plant m-2, DPX and 504 genotypes were probably suitable for this area.


Evaluation of Agronomic Attributes of Canola Cultivars under Different Plant Densities and Application of Humic Acid
M. Amiri, A. H. Shirani Rad, S. A. R. Valad Abadi, J. Daneshian, H. R. Zakerin,
Volume 9, Issue 4 (1-2020)
Abstract
To investigate the effect of humic acid application on agronomic characteristics of canola (Brassica napus L.) genotypes in different plant densities, a factorial split-plot experiment was performed using a randomized complete block design with three replications in the Seed and Plant Improvement Institute, Karaj, Iran. Plant density at three levels of 40, 60 and 80 plants/m2 and humic acid at two levels of 0 (non-application) and application of 0.3% were considered the main plots and canola genotypes including RGS003, Zafar, Julius, Jerry, Zabol10 and Hyola4815 were the sub-plots. The interaction effect of plant density × humic acid × cultivar was statistically significant for seed yield, oil yield, number of seeds per pod, number of pods per plant, biological yield and harvest index. Moreover, the interaction effect of plant density × cultivar was significant for oil percentage, 1000 seed weight, chlorophyll a, chlorophyll b and total chlorophyll. Generally, increased competition at the highest plant density caused an adverse effect on the tested traits of the canola cultivars. The Jerry cultivar with 40 plants/m2 (lowest density) and application of humic acid had the highest numbers of seeds per pod and pods per plant (with an average of 24.6 and 200.7, respectively) and 1000 seed weight (with the average of 4.9 g). Moreover, in the lowest plant density (40 plants/m2) and application of humic acid, the Jerry cultivar had the highest amounts of seed and oil yields (with an average of 5412 and 2196 kg ha-1, respectively). Accordingly, the examined canola cultivars had a positive reaction to the application of humic acid in different plant densities in particular at 40 plants/m2. Jerry cultivar had the maximum seed and oil yield under humic acid application condition when sown at 40 plants/m2.

The Effect of Limited Irrigation on Seed Physical Characteristics in Sunflower Hybrids
Gh. A. Akbari, H. Jabbari, J. Daneshian, I. Alahdadi, N. Shahbazian,
Volume 12, Issue 45 (fall 2008)
Abstract
In order to investigate the limited irrigation impact on physical characteristics of seed in nine sunflower hybrids, three 3-replicate field experiments RCBC were conducted under three irrigation regimes (irrigation after 60, 120 and 180 mm cumulative evaporation from class A evaporation pan, respectively) at the research field of Seed and Plant Improvement Institute in Karaj, Iran. The results showed that the Maximum length, width and seed diameter were obtained from irrigation after 60 mm cumulative evaporation from pan, and irrigations after 120 and 180 mm evaporation caused to decrease the length by 11% and 16%, width by 21% and 26% and seed diameter by 22% and 28%, respectively. There fore the seed diameter in comparison with width and seed length was most susceptible to limited irrigations levels. The Maximum length was seen in hybrid of A74×R95, and the maximum width, and seed diameter were observed in hybrids of Allstar. Also, A74×R95 under irrigations after 60 and 120 mm evaporation and Azargol under irrigation after 180 mm evaporation had the highest seed weight.
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