Vol. 12, Issue 3 (2023)

Author(s):
YB Madagoudra, WN Narkhede, Thombre SV and Mane SG

Abstract:
A field experiment was conducted to evaluate the effect of tillage and integrated nutrient management practices on Bt cotton (Gossypium hirsutum L.) at AICRP on Dryland Agriculture farm, Vasantrao Naik Marathwada Krishi Vidyapeeth, Parbhani during kharif 2020-21. Fifteen treatment combinations consisting of three tillage practices (conventional tillage, reduced tillage and zero tillage) and five integrated nutrient management practices (100% RDF (120:60:60 kg NPK ha-1), 100% RDF + cotton residue @ 3 t ha^-1 + DM @ 12 kg ha^-1, 75% RDF + FYM 6 t ha^-1 + cotton residue @ 3 t ha^-1 + DM @ 12 kg ha^-1, 50% RDF + FYM 12 t ha^-1 + cotton residue @ 3 t ha^-1 + DM @ 12 kg ha^-1 and Control) were evaluated in split plot design with three replications. The mean maximum AGR for plant height and dry matter were recorded under conventional tillage. Among different growth intervals 61-90 DAS recorded maximum AGR for plant height (1.397 cm day-1 plant^-1), while mean maximum AGR for dry matter (3.393 g day-1 plant-1) were recorded between 91-120 DAS under conventional tillage. Among integrated nutrient management practices, 100% RDF + cotton residue @ 3 t ha^-1 + DM @ 12 kg ha-1 recorded mean maximum AGR for plant height (1.455 cm day^-1 plant^-1) 61-90 DAS interval, while mean maximum AGR for dry matter (3.359 g day-1 plant-1) were recorded between 91-120 DAS. The mean CGR, RGR, NAR and LAI were also maximum under conventional tillage and 100% RDF + cotton residue @ 3 t ha^-1 + DM @ 12 kg ha^-1.