Field efficacy of systemic insecticides and microbial pesticides against aphid and fruit borer on tomato in Punjab Kaur Sandeep*, Singh Subash Department of Vegetable Crops, Punjab Agricultural University, Ludhiana-141004, India *Email: sandeepentomologist@yahoo.co.in
Online published on 29 March, 2016. Abstract Studies were carried out to evaluate the field efficacy of some systemic insecticides and microbial pesticides modules against cotton aphid, Aphis gossypii Glover and tomato fruit borer, Helicoverpa armigera (Hubner) on tomato (Lycopersicon esculenum Mill.) at the Vegetable Research Farm, PunjabAgricultural University, Ludhiana. Theneed based sprays of different modules i.e., Imidacloprid (Confidor)17.8 SL@ 0.3 ml L−1 in moduleM1, Thiomethoxam (Actara) 25 WG@ 0.4 g L−1 in module M2, Verticillium lecanii (Ecocill)@2.5 kgha−1+Econeem(AzEC) 1%@500 mlha−1inmoduleM3, Profenophos(Carina)50EC@2mlL−1 in moduleM4, Acephate(Asataf)75SP@1.0 gL−1 in module M5 against M6 standard check Malathion 50 EC@1Lha−1 and control (M7) at 10 days interval for aphid, while Spinosad 45% SC @0.5 ml L−1 in module M1 and Profenophos(Carina) 50 EC @1.5Lha−1in moduleM5 at15 days interval, and Bt (Delfin WG) @500gha−1in moduleM2 and Beauveria bassiana (Larvocel) @4g L−1 in moduleM3, NucleoPolyhedroVirus(NPV)@350 LEha−1 in moduleM4 at 10 days interval were evaluated for fruit borer and compared with the standard check (M6) i.e., Profenophos (Carina) 50EC@ 1.5Lha−1and theuntreatedcontrol(M7)at 10 days interval. The pooled data of 3 years revealed that thiamethoxam (Actara) 25 WG and imidacloprid 17.8 SL significantly reduced aphid population (109.99–123.08 aphids/15 leaves) as against other modules (141.85–208.31 aphids/15 leaves), standard check Malathion 50 EC (175.82 aphids/15 leaves) and control (247.75 aphids/15 leaves). Whereas, spinosad 45% SC in module M1 significantly resulted in lower fruit borer infestation (9.68%) than other modules (M2-M5) with 13.73–29.00% fruit infestation, standard check M6 (13.87%) and control M7 (32.66%). Highest marketable fruit yield and economic returns were obtainedin moduleM1viz.imidacloprid17.8 SL+Spinosad 45%SC(259.06qha−1 and Rs.136717/-)over theother modules (86.97–184.41q ha−1and Rs.14535–88094/-, resp.), the standard check module: Malathion 50EC and Profenophos 50EC(149.12 qha−1andRs.62140/-)andcontrol moduleM7 (57.02 q ha−1). Top Keywords Microbial pesticides, Aphis gossypii, Helicoverpa armigera, tomato. Top |