Efficacy of Newer Insecticides against Fall Armyworm, Spodoptera frugiperda on Maize
Shivangi Shahi
Department of Entomology, Institute of Agriculture and Natural Sciences, Deen Dayal Upadhyaya Gorakhpur University Gorakhpur, Uttar Pradesh, Pin-273009, India.
Saroj Chauhan
Department of Entomology, Institute of Agriculture and Natural Sciences, Deen Dayal Upadhyaya Gorakhpur University Gorakhpur, Uttar Pradesh, Pin-273009, India.
Ritesh Kumar *
Department of Entomology, Institute of Agriculture and Natural Sciences, Deen Dayal Upadhyaya Gorakhpur University Gorakhpur, Uttar Pradesh, Pin-273009, India.
Jatin Kumar Singh
Department of Entomology, GBPUAT, Pantnagar, Pin-263145, Uttarakhand, India.
*Author to whom correspondence should be addressed.
Abstract
The effectiveness of various newer insecticides against fall armyworm was assessed. The different treatments were spray viz., flubendiamide 39.35 % SC, chlorantraniliprole 18.5% SC, emamectin benzoate 5% SG, Beauveria bassiana, Metarhizium anisopliae, neem seed kernel extract, Bacillus thuringiensis and control. The overall mean of the two sprays revealed that the most effective treatment was chlorantraniliprole 18.5% SC recorded the lowest larval population followed by emamectin benzoate 5% SG, Flubendiamide 39.35 % SC, Bacillus thuringiensis, Beauveria bassiana, Metarhizium anisopliae, neem seed kernel extract. During the yield observation, it was observed that a significantly higher yield was obtained in chlorantraniliprole 18.5% SC treated plots which is followed by emamectin benzoate 5% SG, flubendiamide 39.35 % SC, Bacillus thuringiensis, Beauveria bassiana, Metarhizium anisopliae and NSKE 5 %. Maximum percentage increase in yield over control was obtained from chlorantraniliprole 18.5% SC treated plots which are followed by emamectin benzoate 5% SG, flubendiamide 39.35 % SC, Bacillus thuringiensis, Beauveria bassiana, Metarhizium anisopliae and NSKE 5 %. The economics of various treatments based on net profit and cost of plant protection revealed that the highest cost: benefit ratio was observed in plot treated with emamectin benzoate 5% SG followed by Beauveria bassiana, chlorantraniliprole 18.5% SC, Bacillus thuringiensis, NSKE, Metarhizium anisopliae, flubendiamide 39.35 % SC.
Keywords: Chlorantraniliprole 18.5% SC, efficacy, FAW, invasive pest, maize B:C ratio