Journal of FARM SCIENCES, Vol 24, No 3 (2011)

Font Size:  Small  Medium  Large

Role of border crop for the management of chilli leaf curl caused due to thrips, Scirtothrips dorsalis (Hood) and mites, Polyphagotarsonemus latus (Banks)

M.H. Tatagar, J.S. Awaknavar, R.S. Giraddi, H.D. Mohankumar, C.P. Mallapur, P.A. Kataraki

Abstract


Field experiments were carried out for two years during kharif 2006 and 2007 at Agricultural Research Station, Devihosur, Haveri, Karnataka to find out the effect of border crop for the management of chilli leaf curl caused due to thrips and mites. The experiment consisted of eight treatments with five replications in each treatment. Border crop of maize was sown fifteen days prior to chilli planting. Raised nursery seed beds were prepared with seeds of Byadagi dabbi. Thirty five days old seedlings were transplanted to main field. Among different treatments, it was found that chilli crop bordered by two rows of maize at every 0.5 acre area (31.2x60sqm)  with two interventions of spray, first spray with Neemazal 1% @ 2 ml per l at 7 WAT and second spray with Difenthiuron 50 WP @ 0.75 g per l at 9 WAT recorded higher yield (6.90 q/ha) with least leaf curl damage due to thrips (0.70 LCI/plant) and mites (0.19 LCI/plant) at 13 WAT and found significantly superior to all other treatments and standard check.

Full Text: PDF