Bio-efficacy of Different Biopesticides against Jassid, (Amrasca biguttula biguttula Ishida) Infesting Okra [Abelmoschus esculentus (L.) Moench]
Bharat Lal *
Department of Entomology, Rajmata Vijiyaraje Scindia Krishi Vishwa Vidyalaya, Gwalior (M.P.) – 474002, India.
Varsha Dhurve
Department of Horticulture, RVSKVV, RAK College of Agriculture, Sehore (M.P.) – 466001, India.
*Author to whom correspondence should be addressed.
Abstract
An experiment was conducted in the field, Department of Entomology, RVSKVV, College of Agriculture, Gwalior (M.P.) in Kharif- 2018 and 2019.Efficacy of biopesticides against jassid on okra. Experiment was laid out in Randomized Block Design with eight treatments. Biopesticides used in the experiments were Beauveria bassiana @ 0.5 kg/ha, Vertilicillium lecanii @ 1.0 kg/ha, Neem oil 5% @ 2.5 litre, Neem leaf extract 5% @ 25 kg/ha, NSKE 5% @ 25 kg/ha, Garlic clove extract 5% @ 25 kg/ha and Panchgavya 3% @15 litre/ha. All the biopesticides treatments were found significantly effective in reducing the population of jassid over control (untreated) plots. The biopesticides treatments, NSKE 5% were found most effective in reducing the jassid population followed by neem oil 5%, V. lecanii, neem leaf extract 5% and garlic clove extract 5%. Whereas, panchgavya 3% was found least effective in both the years. The highest fruit yield (119.56 q/ha) was recorded in NSKE 5% followed by B. bassiana and neem oil 5%. Whereas, minimum fruit yield was recorded in panchgavya 3% in both years. The highest net profit (27,128 Rs/ha) was obtained from the plots treated with B. bassiana followed by NSKE 5% (25,938 Rs/ha) and maximum benefit ratio in the B. bassiana (1:14.13) followed by V. lecanii (1:8.36), NSKE 5% (1:8:11) and garlic clove extract 5% (1:6.78).
Keywords: Okra, efficacy, jassid, biopesticides, yield