Journal of Crop Production and Processing

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Javanmard A, Sadeghian M A, Amani Machiani M, Abbasi A, Fotoohi K. The Effect of Separate and Integrated Application of Vermicompost, Biologic and Chemical Fertilizers on Quantitative and Qualitative Characteristics of Sugar Beet (Beta vulgaris L.). Journal of Crop Production and Processing 2019; 9 (1) :1-14
URL: http://jcpp.iut.ac.ir/article-1-2788-en.html

In order to evaluate the effect of biofertilizers (nitroxin and phosphate barvar2), vermicompost and chemical fertilizers on the quantity and quality traits of sugar beet (Beta vulgaris L.), an experiment was conducted in randomized complete block design (RCBD) with 13 treatments and three replications at Agricultural and Natural Resources Research Station of Miandoab, Iran in 2015. The treatments were 100% chemical fertilizer (350, 100 and 50 kg ha^-1 urea, superphosphate triple and potassium solphate) as control (T₁), 10 t ha^-1 vermicompost (T₂), 20 t ha^-1 vermicompost (T₃), 10 t ha^-1 vermicompost + 50% chemical fertilizer (T₄), 20 t ha^-1 vermicompost + 50% chemical fertilizer (T₅), nitroxin + phosphate barvar 2 (T₆), 10 t ha^-1 vermicompost + nitroxin + phosphate barvar2 (T₇), 20 t ha^-1 vermicompost + nitroxin + phosphate barvar2 (T₈), nitroxin + phosphate barvar2+ 50% chemical fertilizer (T₉), 10 t ha^-1 vermicompost + chemical fertilizer (196 and 85 kg ha^-1 urea and superphosphate triple) (T₁₀), 20 t ha^-1 vermicompost + chemical fertilizer (40 and 70 kg ha^-1 urea and superphosphate triple) (T11), nitroxin + phosphate barvar 2 + 10 t ha^-1 vermicompost + 50% chemical fertilizer (T₁₂) and nitroxin + phosphate barvar2 + 20 t ha^-1 vermicompost + 50% chemical fertilizer (T₁₃). The highest (47.8) and lowest (39.2) chlorophyll indices were obtained in T₁₃ and T₂ treatments, respectively. Also, the highest root yield (66366 kg ha^-1) was achieved in T₁₃ treatment that was not significantly different from T₁₂ and T₁₁. Due to a combination of organic and biological amendments with chemical fertilizers, sugar yield was increased significantly in T₁₃ treatment due to increases in root yield and sugar content. The sugar yield and white sugar yield in T₁₃ treatment increased 16.7% and 23.5%, respectively compared with T₁. Generally, based on root yield, white sugar yield and extraction coefficient of sugar, integrated application of nitroxin + phosphate barvar2 + 20 t ha^-1 vermicompost + 50% chemical fertilizer can be recommended for sugar beet production in the Miandoab area.