Vol. 11, Issue 7 (2022)

Author(s):
Pawar SB, Karle AS, Gokhale DN and Mane SG

Abstract:
Growth and crop yield may differ with tillage and weed management practices. Hence a field experiment was conducted at experimental farm, AICRP on Integrated Farming Systems, Vasantrao Naik Marathwada Krishi Vidyapeeth, Parbhani (M.S.) during kharif 2019-20 and 2020-21 seasons to study “Response of Bt cotton (Gossypium hirsutum L.) to tillage and weed management practices in vertisol”. Treatment consisted of sixteen treatment combinations comprising four tillage practices (T1- Conventional tillage, T2- Rotary tillage, T3- Minimum tillage, T4- Zero tillage) in main plot, and four weed management practices (W1 - Weed check, W2 - Weed free, W3 – Pendimethalin (30% EC) @ 0.75 kg ha-1 as PE + Quizalofop ethyl (5% EC)@ 50 g ha1(PoE) + Hoeing. and W4- Pendimethalin (30% EC) @ 0.75 kg ha-1 as PE +Pyrithiobac-sodium (10% EC) @ 62.5 g ha-1 (PoE) + Straw mulching 2.5t/ha.). The result of the study revealed that among tillage practices conventional tillage (T1) recorded significantly higher growth, yield contributing characters and seed cotton yield than other treatments, but it was at par with the rotary tillage (T2). Among weed management practices weed free (W2) recorded significantly higher growth, yield contributing characters and seed cotton yield and it was at par with Pendimethalin (30% EC) @ 0.75 kg ha-1 as PE + Pyrithiobac-sodium (10% EC) @ 62.5 gha-1 (PoE) + Straw mulching 2.5t/ha (W4).