Biorational Management of Maize Stem Borer Chilo partellus (Swinhoe)

Bishownath Adhikari1* , Rekha Sapkota2 , Resham Bahadur Thapa3, Ghanashyam Bhandari4 , Kishor Chandra Dahal5

DOI: 10.52547/azarinj.051




The study on “biorational management of Maize Stem Borer, Chilo partellus (Swinhoe) in Farmer’s field condition was done from March – August, 2019. Seven maize stem borer management namely; Spinosad 45% SC 0.5 mL L-1; Super-D (Chlorpyriphos 50% EC + Cypermethrin EC) @1.5 mL L-1; Nimbicidine (Azadirachtin 300 ppm)) 5 mL L-1; Daman (Beuveria bassiana) 3 mL L-1; Kalichakra (Metarhyzium anisopliae) @2.5 mL L-1; Emamectin benzoate 6% WP @0.2 g L-1 and control were used in Randomized Complete Block Design with three replications. Data were recorded on vegetative growth, damage assessment, yield and yield attributes. The damage assessment recorded at 3, 7 and 12 days after treatment application. There was lower percentage of damaged plant (0.83%) recorded in Spinosad 45% SC sprayed plot. Both stem exit hole and average tunnel length were statistically lower in the plot sprayed with Spinosad 45% SC and Choloropyriphos 50% + Cypermethrin 5% EC. Both insecticides namely Spinosad 45% SC and Choloropyriphos 50% + Cypermethrin 5% EC produced higher grain yield (8670 Kg ha-1 and 8620 kg ha-1 respectively) of maize as compared to other treatments. Nimbicidine treated plot produced 6900 kg ha-1 grain yield which was statistically better than Beuveria bassiana, Metarhyzium anisopliae, Emamectin benzoate and control. The overall result showed that safer pesticide like Spinosad followed by Nimbicidine are effective for the management of maize stem borer. Rrepeated trails over the seasons and varieties would help to reduce the infestation of maize stem borer.


Beauveria, Experiment, Nimbicidine, Spinosad, Vegetative



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