Vol. 12, Issue 12 (2023)

Author(s):
PS Dudde, VP Suryavanshi, Rajkumar C, SJ Mamdi and KS Sabne

Abstract:
In order to study the effect of micronutrient grades on growth, yield and economics of soybean, a field experiment was performed at Experimental Farm, Agronomy Section, College of Agriculture, Latur on clayey soil during kharif season of 2022-2023. The experiment was laid out in Randomized Block Design with seven treatments replicated thrice. The treatments were T₁: Absolute control, T₂: RDF (30:60:30 NPK kg ha^-1), T₃: RDF + FYM @ 5 t ha^-1, T₄: RDF + FYM @ 5 t ha^-1 + Micronutrient Grade-1 complex @ 25 kg ha^-1, T₅: RDF + FYM @ 5 t ha^-1 + Micronutrient Grade-1 complex @ 25 kg ha^-1 + Micronutrient Grade-2 complex @ 0.25% (Foliar spray at 20 DAS), T₆: RDF + FYM @ 5 t ha^-1 + Micronutrient Grade-1 complex @ 25 kg ha^-1 + Micronutrient Grade-2 complex @ 0.5% (Foliar spray at 40 DAS), T₇: RDF + FYM @ 5 t ha^-1 + Micronutrient Grade-1 complex @ 25 kg ha^-1 + Micronutrient Grade-2 complex @ 0.25% (Foliar spray at 20 & 40 DAS). The result revealed that the application of RDF + FYM @ 5 t ha^-1 + Micronutrient Grade-1 complex @ 25 kg ha^-1 + Micronutrient Grade-2 complex @ 0.25% (foliar spray at 20 and 40 DAS) recorded significantly highest plant height, number of branches plant^-1 and number of leaves plant^-1, followed by the application of RDF + FYM @ 5 t ha^-1 + Micronutrient Grade-1 complex @ 25 kg ha^-1 + Micronutrient Grade-2 complex @ 0.25% (foliar spray at 20 DAS) and RDF + FYM @ 5 t ha^-1 + Micronutrient Grade-1 complex @ 25 kg ha^-1 + Micronutrient Grade-2 complex @ 0.5% (foliar spray at 40 DAS). Whereas other growth, yield attributes, yield and economics viz., leaf area plant^-1 (dm²), dry matter accumulation plant^-1, number of pod plant^-1, number of seeds plant^-1, weight of pod plant^-1, weight of seeds plant^-1, seed yield, GMR and NMR were significantly highest with the application of application of RDF + FYM @ 5 t ha^-1 + Micronutrient Grade-1 complex @ 25 kg ha^-1 + Micronutrient Grade-2 complex @ 0.25% (foliar spray at 20 and 40 DAS), which was at par with the application of RDF + FYM @ 5 t ha^-1 + Micronutrient Grade-1 complex @ 25 kg ha^-1 + Micronutrient Grade-2 complex @ 0.25% (foliar spray at 20 DAS). Highest harvest index and B:C ratio was obtained with the application of application of RDF + FYM @ 5 t ha^-1 + Micronutrient Grade-1 complex @ 25 kg ha^-1 + Micronutrient Grade-2 complex @ 0.25% (foliar spray at 20 and 40 DAS).