Evaluation of bio-pesticides, botanicals and plant extracts against brown plant hopper (Nilaparvata lugens) of rice

Abstract

The field experiment was undertaken at Agriculture Research Station, Sakoli, Dist. Bhandara (MS) under Dr. Panjabrao Deshmukh Krishi Vidyapeeth, Akola, during kharif 2018 to study the performance of herbal against brown plant hopper of paddy. This experiment incorporating eight treatments consisting of Metarhizium anisopliae (1x108 cfu/ml) @ 4 g /litre of water, neem oil @ 5 ml/litre of water, 5 % NSKE, 5 % bitter gourd leaf extract, 5 % custard apple leaf extract, 5 % garadi leaf extract, 5 % bitter gourd leaf extract + 5 % garadi leaf extract + 5 % custard apple leaf extract and control. The results revealed that the treatment of 5 % bitter gourd leaf extract + 5 % garadi leaf extract + 5 % custard apple leaf extract (2.42 nos./hill) was found significantly superior in reducing the population of brown plant hopper over other treatments and followed by 5 % garadi leaf extract (3.11 nos./hill), neem oil (3.23 nos./hill), M. anisopliae (3.62 nos./hill), 5 % custard apple leaf extract (3.69 nos./hill), 5 % bitter gourd leaf extract (3.76 nos./hill) and 5 % NSKE (3.97 nos./hill). However, the highest population of brown plant hopper was recorded in control (4.92 nos./hill). The maximum yield recorded in the treatment combination of 5 % bitter gourd leaf extract + 5 % garadi leaf extract + 5 % custard apple leaf extract (39.33 q/ha).