Tank mix formulation of atrazine and new generation herbicides against complex weed flora of maize (Zea mays L.)

Abstract

A field experiment was conducted on clay loam soil during kharif, 2017 at Instructional Agronomy Farm, Rajasthan College of Agriculture, Udaipur to find out the Eeffect of tank mix formulation of atrazine and new generation herbicide against complex weed flora of maize (Zea mays L.). The results of the experiment revealed that the lowest total weed density at 30 DAS was recorded with tank mix application of atrazine0.5 kg/ha+ tembotrione0.125 kg/haPoE at 15 DAS. All the weed control treatments were also found significantly superior in reducing dry matter of monocot, dicot and total weeds compared to weedy check at 30 DAS. The minimum total weed dry matter at this stages (2.85, g/m2) were observed underatrazine0.5 kg/ha +tembotrione0.125 kg/haPoE at 15 DAS and it was closely followed by atrazine 0.5 kg/ha + topramezone 0.025 kg/haPoE at 15 DAS (3.89, g/m2). An application of atrazine0.5 kg/ha + tembotrione0.125 kg/haPoE at 15 DAS resulted in maximum weed control efficiency of 96. 99% at 30 DAS. The application of atrazine 0.5 kg/ha +tembotrione0.125 kg/ha as PoE at 15 DAS recorded the tallest plants (47.0 cm) with greatest dry matter accumulation per plant (18.04g) at 30 DAS. The maximum gross and net return (₹ 98635/ha and ₹ 71009/ha and benefit cost ratio (2.57) were also obtained under application of atrazine 0.5 kg/ha+ tembotrione 0.125 kg/haPoE at 15 DAS, leading all other treatments significantly behind.