Vol. 11, Issue 1 (2022)

Author(s):
Dameruppula Pranaswi, M.P. Jagtap, B.V. Asewar, D.N. Gokhale and G.U. Shinde

Abstract:
The field experiment was conducted during rabi season of 2020-2021 at experimental farm, Department of Agronomy, Marthwada Krishi Vidyapeeth, Parbhani, Maharashtra with a view to study the effect of different sprayers on weed control in wheat. Experiment was conducted under randomized block design (RBD) with 8 treatments i.e. T₁-Herbicide application by knapsack sprayer PE Metribuzin 70% @ 0.175 kg.a.i ha̵ ˡ +1HW, T₂- Herbicide application by knapsack sprayer POE Metribuzin 70% @ 0.175 kg.a.i ha̵ ˡ +1HW, T₃ -Herbicide application by knapsack sprayer PE + drone POE Metribuzin 70% @ 0.175 kg.a.i ha̵ ˡ, T₄- Cultural methods (cycle hoe at 30, 60 90 DAS), T₅- Herbicide application by drone POE Metribuzin 70% @ 0.175 kg.a.i ha̵ ˡ +1HW, T₆-Herbicide application by drone with different concentration POE Metribuzin 70% @ 0.175 kg.a.i ha̵ ˡ (75% less i.e. 0.37 kg ha^-1), T₇- Weed free (Hand weeding at 30, 60, 90 DAS), T₈- Weedy check. The gross plot size of experiment field is 7.2m x 6m and net plot size 6.3m x5.6m. Observations and data was recorded for weed count, weed control efficiency and weed index. Highest weed control efficiency and lowest weed index was observed with treatment T₃ -Herbicide application by knapsack sprayer PE + drone POE Metribuzin 70% @ 0.175 kg.a.i ha̵ ˡ.