Vol. 11, Special Issue 10 (2022)

Author(s):
Shayista Fayaz, Raihana Habib Kanth, Lal Singh, AA Saad, Faheem Jeelani and Mushtaq Ahmad Dar

Abstract:
A field experiment entitled: “Bio efficiency of post emergent herbicide in maize under rain fed conditions of Kashmir” was conducted at Sher-e-Kashmir University of Agricultural Sciences and Technology, FoA, wadura during kharif season of 2020 to 2021. The experiment was laid out in Randomized block design with ten weed management practices Atrazine @ 1.0 kg / ha (PE) fb one hand weeding (HW) at 35 DAS(T₁), Atrazine @ 0.5 kg / ha (PE) fb tembotrione @ 120 g / ha at 35 DAS (T₂), Atrazine @ 0.5 kg / ha (PE) fb topramezone @ 25.2g / ha (POE) at 35 DAS (T₃), Metribuzin @ 0.5 kg / ha (PE) fb one hand weeding at 35 DAS (T₄), Metribuzin @ 0.25 kg / ha (PE) fb tembotrione 120g / ha (POE) at 35 DAS (T₅), Metribuzin @ 0.25 kg / ha (PE) fb topramezone @ 25.2g / ha (POE) at 35 DAS (T₆), Intercropping with smoother cowpea (T₇), Two HW at 25 and 50 DAS (T₈), Weed free (T₉), Weedy check (T₁₀). The soil of the experimental field was silty clay loam in texture, neutral in reaction with low N (220 kg ha^-1) and P (23.5 kg ha^-1) and medium in K (165.5 kgha^-1). Among herbicides Atrazine @ 0.5 kg ha^-1 (PE) fb tembotrione @ 120g ha^-1 at 35 DAS (T₂) recorded highest growth parameters plant height (207.45 cm and 212.42 cm), dry matter accumulation (134.29 q ha^-1 and 136.68 qha^-1), leaf area index (6.75 and 6.81) as well as yield parameters grain yield (50.33 and 52.04 q / ha) and Stover yield 60.67 and 63.05 q / ha) during both seasons. It can concluded that under existing conditions Atrazine @ 0.5 kg ha^-1 (PE) fb tembotrione @ 120g ha^-1 at 35 DAS should be recommended proved superior for realizing higher yield and profitability of maize (composite-8) under Kashmir conditions.