International Journal of Advances in Science, Engineering and Technology(IJASEAT)
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Volume-8,Issue-1  ( Jan, 2020 )
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  Journal Paper

Paper Title
Seasonal Incidence of Aphid (Aphis Gossypii Glov.) Infesting Tomato (Lycopersion Esculentus (L.) and their Management by using Botanical Pesticides

Abstract
Aphid is a very important pest attacking tomato crop.. Low level of population (0.19 to 0.50/leaf) was counted on last week of July to 2nd week of August, 52 to 5, and 18 to 22 SMW when average temperature, relative humidity and weekly rainfall ranged from 15.710C-28.860C, 70.42%-92.93% and 0.00mm-240.20mm respectively. Persistent high population (0.62-2.69/leaf) was maintained on 41 to 51 and 6 to 17 SMW when average temperature, relative humidity and weekly rainfall ranged from 18.330C-27.830C, 47.85%-92.39% and 0.00mm-63.40mm respectively. The weather parameter such as temperature (maximum, minimum and average) had a non-significant positive influence on aphid population while nonsignificant negative influence found with weekly total rainfall. Average relative humidity express significant positive effect on population development. Acetamiprid was found highly efficacious against aphid and found to suppress 85.11% aphids closely followed by neem + Spilanthes (73.29%). Other treatment viz., Polygonum plant extracts, Spilanthes, tobacco extracts, neem pesticides and garlic extracts were found to be moderately effective against aphids providing 63.49%, 60.66%, 60.54%, 59.83%, and 53.83% suppression respectively. botanical insecticide are biopesticides having less or no hazardous effects on human health and the environment, and therefore, they can be incorporated in IPM programmes and organic farming. Keywords - Weather forecasting, bio-pesticides, vegetable IPM, organic farming


Author - Sunil Kr. Ghosh

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