Bhavani B.,Angrau Regional Agriculture Research Station |
Venugopala Rao N.,Angrau Regional Agriculture Research Station |
Rao C.V.N.,Angrau Regional Agriculture Research Station |
Naidu N.V.,Angrau Regional Agriculture Research Station
Pestology | Year: 2010
A field experiment was conducted for two years during 2003-2004 and 2004-2005 at Regional Agricultural Research Station, Anakapalle to test the bioefficacy of different insecticides against scale insect, Malanaspis glomerata Green. The results revealed that all the insecticidal treatments preceded by trashing were significantly superior over control. Among the test insecticides, foliar spray of acephate 75SP @1g/lt twice at 30 days interval preceded by trashing of older leaves recorded lowest incidence of scale insect (8.70%) and scale incrustation (158mg/cane) with highest per cent reduction of scale incidence (78.8) and scale incrustation (83.9) over control. Acephate 75 SP @1g/lt recorded highest cane yield (90.42t/ha), percent sucrose (19.29%) and purity of juice (89.23%) as compared to control (70.7t/ha; 17.49%; 79.21% respectively). The next best treatments were dimethoate 30EC @1.7ml/lt, flufenoxuron 10EC @1ml/lt, endosulfan 35 EC, malathion 50 EC and profenophos 50EC + multineem.