Efficacy of botanicals and bio-pesticide against Helicoverpa armigera in chickpea
Anil Kumar, MK Tripathi, Umesh Chandra and Ram veer
The experiment was conducted at Agriculture farm, Department of Entomology, Tilak Dhari post Graduate College, Jaunpur during Rabi season 2010-11 and 2011-12. Studies on Neem Seed Kernel extracts @ 5% performed best among the treatments followed by, Bt. 1 kg/ha, Neem oil @ 2 %, Nimbecidine @ 2 %, HaNPV @450LE/ha and Neem leaf Extract @ 5 % with 1.90, 4.70, 4.80, 4.90, 5.20, 5.30, and 5.4 mean larval population of Helicoverpa armigera larvae per meter length, respectively in that order NSKE @5% were significantly superior over other treatments. The efficacy of various treatments at this stage was in order of Neem Seed Kernel Extract @5% > Bt. 01 Kg/ha > Neem oil @ 2 %> Nimbecidine @ 2% > Neem leaf extracts @5% > NPV@450LE/ha. Spray of NSKE @ 5% proved significantly lower pod damage of 13.45 % and 12.76% in 2010-11and 2011-12 followed by and Bt. 1 kg /ha 14.10 in the first year and 13.38% in the second year.