Use of essential oils & botanicals for the management of insect pests of vegetables (Ongoing)
To find out the suitable doses and method of application of commercially available essential oils in insect pest management of vegetables
To find out the suitable dose of sprays of oiled neem cake for insect pest management
To integrate neem soap, pongamia soap, neem cake sprays and essential oils and develop modules for in insect pest management of selected vegetables.
P. N. Krishna Murthy
Dr. H.R. Ranganath
Essential oils were found effective in reducing thrips (Thrips rtabaci) in onion, capsicum and DBM in cabbage. Among essential oils, Basil (Tulsi) and mint were found highly promising.
E.C. Formulations of Basil and Mint were developed and were found effective in reducing thrips (Scirtothrips dorasalis) in polyhouse conditions. Sprays of Neem seed powder extract, neem soap and petrol extract of oiled neem cake were also found effective in reducing thrips under polyhouse conditions
In Okra sprays of pulverized neem seed powder extract (NSPE), Neem soap (NS) given at 7 days interval from 10 days after germination followed by only one spray of imidacloprid at 15 Days after germination were found effective in reducing leaf hopper, borer and increasing yield
Sprays of neem seed powder and neem soap were found to be effective on onion thrips and can be used as alternatives to synthetic insecticides in onion.
Formulation of neem seed powder for spray and neem cake for soil application were developed. These are being short listed for further evaluation.
Krishna Moorthy, P.N. , K. Shivaramu, N. K. Krishna Kumar, H. R. Ranganath and S. Saroja. 2013. Comparative Efficacy of Neem Products, Essential oils and Synthetic Insecticides in the Management of Onion Thrips (Thrips tabaci Lindeman). Pest Management in Horticultural Ecosystems. (in Press)
Prasnnakumar, N.R. Krishna Moorthy, P.N. and S. Saroja. 2013. Use of botanicals on major insect pests of cabbage (Brasica oleracea) var. Capitata). Pest Management in Horticultural Ecosystems. (in Press).
Krishna Moorthy, P.N. K. Shivaramu and S. Saroja. 2012. Use of Botanicals and Essential oils for the Management of insect pests in capsicum and onion. Paper presented in IV National Symposium min Plant protection in Horticultural crops held at Bangalore (April 24-28, 2012). P. 88