Herbicide Efficacy as Influenced by Spray Fluid Quality and Adjuvants on Yield and Economics of Maize (Zea mays L.)

Abstract

A field investigation was conducted during Rabi season of 2020-21 at Professor Jayashankar Telangana State Agricultural University, Rajendranagar, Hyderabad to assess the herbicide efficacy as influenced by spray fluid quality and adjuvants on yield and economics of maize (Zea mays L.). The results revealed that there was a positive influence on addition of ammonium sulphate as adjuvant when saline waters (C3S1 and C3S2 classes) were used as spray fluid as compared to application of herbicides with saline waters alone. Tank mix application of halosulfuron methyl at 67.5 g ha-1 + atrazine at 0.5 kg ha-1 with 2% ammonium sulphate with C3S1 class water as spray fluid recorded higher yield (5.00 and 8.15 tons ha-1) and economics of maize with reference to other saline water treatment combinations and proved as effective treatment following to halosulfuron methyl at 67.5 g ha-1 + atrazine at 0.5 kg ha-1 with 2% ammonium sulphate with distilled water as spray fluid.