BIO-EFFICACY OF DIFFERENT INSECTICIDES AGAINST GRAPE FLEA BEETLE.

Venukumar, S.; Nadaf, A. M.; Peerjade, Dadapeera A.; Tatagar, M. H.; Prashantha, A.; Pattepur, Sateesh

Intensive and extensive cultivation of grapes leads to a serious pest problem in major grape-growing areas of the world. The climate in India is ideally suited for the high production of table and wine grapes as well as a high prevalence of several pests. Among different insect pests, adult flea beetles are observed from mid-July and reach peak numbers in October-November and cause damage to the plants immediately after pruning in October. The loss increases to 50 per cent when the sprouting buds are damaged, particularly after October pruning. Several newer molecules and botanical insecticides were evaluated against grape flea beetle at Horticulture Research and Extension Centre, Vijayapur (Tidagundi), Karnataka, India during 2020-21. Among the insecticides, Lambda-cyhalothrin 5 EC @ 0.50 ml/l recorded the lowest number of flea beetles and bud damage followed by Lambda-cyhalothrin 4.9 CS @ 0.50 ml/l, Fipronil 80 WG @ 0.06 g/l, Spinosad 45 SC @ 0.25 ml/l, Cyantraniliprole 10.26 OD @ 0.70 ml/l, Thiamethoxam 25 WG @ 0.25 g/l, Flonicamid 50 WG @ 0.30 g/l, and Alphamethrin 10 EC @ 0.50 ml/l. Finally, the significantly highest marketable yield (t/ha) was also recorded in the treatment Lambdacyhalothrin 4.9 CS @ 0.50 ml/l (42.82 t/ha) followed by Cyantraniliprole 10.26 OD @ 0.70 ml/l, Fipronil 80 WG @ 0.06 g/l, Alphamethrin 10 EC @ 0.50 ml/l, Lambda-cyhalothrin 5 EC @ 0.50 ml/l, Thiamethoxam 25 WG @ 0.25 g/l, Spinosad 45 SC @ 0.25 ml/l, Flonicamid 50 WG @ 0.30 g/l and Azadirachtin 1 EC @ 2.00 ml/l (40.46, 40.32, 39.88, 39.15, 37.73, 37.61, 36.96 and 31.15 t/ha, respectively).

Journal of Experimental Zoology India, 2023, Vol 26, Issue 1, p663

0972-0030

Academic Journal

10.51470/jez.2023.26.1.663