Field experiment evaluated foliar application effects on nutrient uptake and seed yield in green gram, suggesting improved practices for crop productivity.
A field experiment was conducted at Agricultural Research Station, Chhatabar farm of the Institute of Agricultural Sciences , Siksha “O” Anusandhan (Deemed to be University), Bhubaneswar, under East and South-Eastern Coastal Plain Agro-climatic zone of Odisha during summer season of 2021on sandy loam soil to evaluate the foliar spray (FS) once ( 30DAS) or twice ( 30 and 45 days after sowing) of water soluble nutrients NPK 19:19:19, micronutrient boron, growth regulators salicylic acid (SA), naphthalene acetic acid (NAA) and brassinolide (BR) on yield and yield attributing characters of Green gram. Application of RDF(20:40:20:20 Kg N:P2O5:K2O:S/ha) + 2 FS NPK(19:19:19) @ 2 % spray recorded the highest seed yield (1201 kg/ha) which was at par with RDF + 2FS of B, RDF + 2FS BR, RDF +1FS of B, and RDF + 1FS NPK. Foliar application of water soluble nutrients, and growth regulators produced better effects on seed yield and yield attributing characters in green gram, increased the N, P and K content as well as N, P and K uptake of both seed and stover, enriched protein content in seed, enhanced available nutrient status of soil and nutrient use efficiency of summer green gram in comparison to soil application (RDF) alone. Among them RDF + 2 FS NPK foliar spray at 30 and 45 DAS recorded maximum seed yield, high protein (23.13%) containing seed, high nutrient content, uptake, and available nutrient (N, P and K)of soil could be recommended to enhance seed yield, yield attributes, quality parameters, nutrient uptake and soil nutrient status of summer green gram.
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Prusti et al. (2024) studied this question.