• Dr. Ajeet Kumar

Litchi (Litchi chinensis Sonn.) is an important subtropical evergreen fruit crop belongs to family Sapindaceae. About 40 insects and mites species reported attacking trees and fruits of litchi at different stages of its growth. Recently, litchi fruit borer and litchi leaf roller have acquird the status of major pests and now, litchi looper, litchi bug and bug warm are emerging pests of litchi. Among the different pest of litchi, a species of eriphyid mite knows as litchi erineum mite. Aceria litchii (Keifer) is considered as the most important pest. The comparative field efficacy of pest management approaches consisting of bio-pesticides, organic manures and other components of biological approaches were evaluated against major pests (Litchi fruit borer, Litchi mite and Litchi leaf roller) of litchi. Spraying of natural pesticide, spinosad 45 SC (0.045%) twice at flush stage and fruit colour break stage along with the application of plant nutrients through completer organic sources (100%) afforded maximum protection to the litchi trees from the pests recording lowest leaf infestation (5.10 per cent ) due to litchi mite (A. litchii), fruit damage (6.30 per cent) due to litchi fruit borer, C.cramerella, leaf infestation (8.60 per cent) due to litchi leaf roller, D. aprobola and the maximum marketable fruit yield (126.80 kg/tree). The NSKE (4%) also provide protection to the litchi trees from the pest menace recording 8.00 per cent leaf infestation due to litchi mite, 9.50 per cent fruit damage due to litchi fruit borer, 12.80 per cent leaf infestation due to litchi leaf roller and fruit yield 121.20 kg per tree during the years 2012 and 2013. These pest management modules were cost effective also particularly, organic protection modules with NSKE (C/B = 1:9.9) and spinosad (C/B = 1:10.2). When several damages are seen, spraying of Carbaryl 2ml/l may be done, which is very effective.

Bio-Pesticides, Biological approaches, Nutrients, Organic manures.

"Study of Biological Techniques to Prevent Major Pests of Litchi (Litchi chinensis Sonn.)", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.5, Issue 10, page no.730-734, October-2018, Available :http://www.jetir.org/papers/JETIR1810A14.pdf

"Study of Biological Techniques to Prevent Major Pests of Litchi (Litchi chinensis Sonn.)", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.5, Issue 10, page no. pp730-734, October-2018, Available at : http://www.jetir.org/papers/JETIR1810A14.pdf