Efficacy of bio-pesticides against jassid on okra crop
2009
Laghari, A.A.
A field experiment was carried out to evaluate the efficacy of bio-pesticides against jassid on okra seed was sown on ridges keeping a ridge to ridge distance of 45 cm after completion of germination seedlings were thinned and a plant to plant distance of 22.5 cm was maintained. There were twenty plots, each plot measuring an area of 6x3.5 meter. Following bio-pesticides were applied against thrice jassid at economic threshold level. Pre-treatment population of jassid was recorded one day before spray from randomized selected 5 plants from each treatment. While post treatment jassid count was made after 24, 48, 72 hours one and two weeks of spray. It was observed that during 1st spray all the four bio-pesticides reduce the population of jassid as compared to untreated control. However, the reduction percentage varied significantly between the products after 24, 48, 72 hours, one and two weeks of their application.
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