Vol. 10, Issue 12 (2021)

Author(s):
KN Gavhane, SB Pawar and SB Dhakne

Abstract:
A field experiment was conducted during rabi season 2015-16 on experimental farm of National Agricultural Research Project, Aurangabad to study the different fertility levels of NPK with split application of nitrogen for maize under rabi season. The field experiment was laid in factorial randomized block design with twelve treatments and replicated thrice. The grain yield ha^-1 as influenced by different fertility levels revealed that the highest grain yield was recorded by F₄ (200:100:100 NPK kg ha^-1) (4892 kg ha^-1) followed by F₃ (175:87.5:87.5 NPK kg ha^-1) and F₂ (150:75:75 NPK kg ha^-1) and found to be significantly superior over F₁ (125:62.5:62.5 NPK kg ha^-1). The highest grain yield (4705 kg ha^-1) was recorded in S₃ (Three splits of N 33% as a basal dose + 33% at 30 DAS + 33% at 60 DAS) followed by S₁ (Two splits of N 50% as a basal dose + 50% at 30 DAS) and significantly superior over S₂ (Three splits of N 25% as a basal dose + 50% at 30 DAS + 25% at 60 DAS). The highest net monetary returns (33431 ha^-1) was recorded in F₄ (200:100:100 NPK kg ha^-1) followed by F₂ (150:75:75 NPK kg ha^-1) and F₃ (175:87.5:87.5 NPK kg ha^-1) which was found significantly superior over F₁ and highest B: C ratio (1.98) was recorded in F₂ (150:75:75 NPK kg ha^-1). Thus, for securing higher grain yield and net profit, maize crop should be fertilized with 150: 75: 75 NPK kg ha^-1 with three equal split of nitrogen three splits of N 33% as a basal dose + 33% at 30 DAS + 33% at 60 DAS.