Vol. 12, Issue 3 (2023)

Author(s):
PM Chavan, YM Waghmare, SD Maindale and LR Shinde

Abstract:
A field experiment was conducted at Farm of Agronomy section, College of Agriculture, Latur (Maharashtra) during kharif season of 2021 to study the “Effect of foliar application of nano N fertilizer on growth and yield of sorghum (Sorghum bicolor L)”. The experiment was laid out in Randomized Block Design with nine treatments and was replicated thrice viz., T₁ - Control, T₂ - 75% RDN with commercial urea in 2 equal splits - At sowing & 30 DAS, T₃ - Foliar spray of 75% RDN with nano urea in 2 equal splits - 20 & 40 DAS, T₄ - Foliar spray of 75% RDN with nano urea in 3 equal splits - 15, 30 & 45 DAS, T₅ - 100% RDN with commercial urea in 2 equal splits - At sowing & 30 DAS, T₆ - Foliar spray of 100% RDN with nano urea in 2 equal splits - 20 & 40 DAS, T₇ - Foliar spray of 100% RDN with nano urea in 3 equal splits - 15, 30 & 45 DAS, T₈ - Foliar spray of 125% RDN with nano urea in 2 equal splits - 20 & 40 DAS, T₉ - Foliar spray of 125% RDN with nano urea in 3 equal splits - 15, 30 & 45 DAS. The results of the study revealed that higher growth attributes, yield attributes, grain yield (2730 kg ha^-1) and stalk yield (6152 kg ha^-1) was found in the treatment of 100% RDN with commercial urea in 2 equal splits - At sowing & 30 DAS (T₅). It was followed by foliar spray of 125% RDN with nano urea in 3 equal splits - 15, 30 & 45 DAS (T₉), foliar spray of 125% RDN with nano urea in 2 equal splits - 20 & 40 DAS (T₈) and foliar spray of 100% RDN with nano urea in 3 equal splits - 15, 30 & 45 DAS (T₇) and also found significantly superior over rest of the treatments.