Field Efficacy of Insecticides against Fall Army Worm, Spodoptera frugiperda (J. E. Smith) on Maize (Zea mays L.)

Abstract

The field investigation was carried out during the Kharif season 2021 and 2022 in Central Research Farm (CRF), Naini Agriculture Institute, Sam Higginbottom University of Agriculture Technology and Sciences, Prayagraj, Uttar Pradesh, India. The experiment was laid in Randomized Block Design with twelve treatments each replicated thrice viz., Chlorantraniliprole 18.5 SC (0.5 ml/l), Lambda cyhalothrin 2.5% EC (10 ml/l), Thiamethoxam 25 WG (10 gm/kg), Profenophos 50 EC (3ml/l), Cypermethrin 10 EC (4 ml/l), Neem oil 3% (30 ml/l), Verticillium lecani 1.15 WP (15 ml/l), Spinosad 45 SC (0.3 ml/l), Emamectin benzoate 5 SG (0.40 gm/kg), Indoxacarb 15.8 EC (1.5 ml/l), NSKE 5% (50 ml/l) and control plot. The result on Spodoptera frugiperda larval population after first and second spray in kharif 2021 and kharif 2022 evaluated that all the treatments were significantly superior over the control. Among the all treatments Emamectin benzoate 5 SG (2.24), (0.82) and (3.61), (2.33) was recorded minimum larval population of the both spray followed by, Chlorantraniliprole 18.5 SC (2.41), (1.01) and (3.82), (2.46), Indoxacarb 15.8 EC (2.53), (1.13) and (3.92), (2.55), Thiamethoxam 25 WG (2.66), (1.26) and (3.99), (2.66), Lambda cyhalothrin 2.5% EC (2.73), (1.33) and (4.06), (2.73) and Spinosad 45 SC (2.86), (1.46) and (4.12), (3.79). In this Profenophos 50 EC (2.93), (1.53) and (4.19), (2.86), Cypermethrin 10 EC (2.99), (1.59) and (4.32), (2.99), Verticillium lecani 1.15 WP (3.06), (1.66) and (4.39), (3.06), Neem oil 3% (3.13), (1.73) and (4.46), (3.13), NSKE 5% (3.19), (1.79) and (4.55), (3.24) is found to be least effective than all the treatments and is significantly superior over the control (4.99), (6.19) and (6.40), (7.19).

Field Efficacy and Economics Certain Chemicals and Botanical against Fall Armyworm, [(Spodoptera frugiperda (J.E. smith.)] on Maize (Zea mays)

“…Despite maize being susceptible to 141 insect pests, only a few are considered major in India, including shoot fly, stem borers, armyworms, and Helicoverpa armigera. The recent infestation of the fall armyworm has escalated the challenge for maize farmers due to its high mobility, reproductive rate, and ability to thrive on various host crops available year-round [3][4][5][6].…”