Effects of foliar fertilization on yield, protein, oil and elemental composition of two soybean varieties1
作者:
I. R. Chowdhury,
K. B. Paul,
F. Eivazi,
D. Bleich,
期刊:
Communications in Soil Science and Plant Analysis
(Taylor Available online 1985)
卷期:
Volume 16,
issue 7
页码: 681-692
ISSN:0010-3624
年代: 1985
DOI:10.1080/00103628509367637
出版商: Taylor & Francis Group
关键词: foliar fertilization;Glycine max(L.) Merr.;plant analysis
数据来源: Taylor
摘要:
The effects of foliar fertilization on the yield and seed composition of two soybean (Glycine maxL. Merrill) varieties were investigated under mid‐Missouri conditions over a 2‐year period. The foliar fertilizer treatments consisted of (i) 80–8–24–4 (NPKS) kg/ha, (ii) 40–4–12–2 (NPKS) kg/ha, and (in) control (no foliar treatment) with the optimum proportion of N:P:K:S in the solution 10:1:3:0.5 respectively. Nutrient sources were urea, potassium polyphosphate, and potassium sulfate. Water solutions of fertilizers (pH 6.9) containing 0.1% Tween 80 (v/v) were sprayed on the plants using a CO2‐ pressurized back‐pack sprayer. Foliar fertilizer was split between four equal applications during the seed filling period. The variety Mitchell at the higher rate and the variety Williams at the lower fertilizer application rate produced slight, though statistically insignificant, yield increases. At the higher rate of application, the seed protein contents of both varieties increased, while the oil contents decreased. The concentrations of P and K in the seeds were not affected by foliar fertilization, but at the higher rate, there was a small decrease in S content of Williams variety.
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