Efficacy of Potassium Fertilizer and Certain Pesticides for the Management of Brinjal Fruit Infection by Shoot Borer [Leucinodes Orbonalis (Guenée)]

Bhandari, Sagar; Kandel, Bikash; Gyawali, Pramod; Pokhrel, Saurav; Ojha, Sushil; Bhandari, Sarita

doi:10.21608/ajs.2023.227340.1532

Efficacy of Potassium Fertilizer and Certain Pesticides for the Management of Brinjal Fruit Infection by Shoot Borer [Leucinodes Orbonalis (Guenée)]

Document Type : Original Article

Authors

¹ Faculty of Agriculture, Agriculture and Forestry University, Rampur, Chitwan, Nepal

² College of Natural Resource Management, Agriculture and Forestry University (AFU), Tikapur, Kailali, Nepal

10.21608/ajs.2023.227340.1532

Abstract

The research aims to evaluate the efficacy of different levels of potassium fertilizer (8 g/plant K₂O) as well as the insecticides neemix, spinosad, and imidacloprid at the rates of 6 ml, 0.33 ml, and 0.33 g/L water, respectively, for the management of brinjal fruits and shoot borer. The two-factor randomized complete block design with three replications was used. Significant minimum shoot damage was recorded in the plots treated with imidacloprid (0%), spinosad (1.67%) and neemix (5.0%) at 81 days after planting. Similarly, a significant minimum fruit infestation (2.90%) was recorded with imidacloprid, which was lower than those of spinosad (15.16%) and neemix (19.63%). The application of potassium fertilizer at a rate of 8 g/plant showed a significant reduction in shoot infestation (2.50%) 81 days after planting. The minimum percentage yield of infested fruit was reported with spinosad (1.03%), which was at par with other insecticidal treatments. Considering the negative impacts of chemical pesticides, neemix 6 ml/L water in combination with potassium fertilizer at 8 g/plant is recommended.

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