Evaluation of different IPM modules against Helicoverpa armigera Hubner infesting chickpea
DOI:
https://doi.org/10.53550/jfl.v19i1.2291Keywords:
Bacillus thuringiensis, CBR, Chickpea, Cicer arietinum, Endosulfan, HaNPV, Helicoverpa armigera, Neem oilAbstract
In a field experiment conducted at Sriganganagar for the control of gram pod borer (Helicoverpa armigera, Hubner) infesting chickpea crop, different modules of integrated pest management (IPM) comprising endosulfan 0.75%, neem oil 0.%, Nuclear Polyhedrosis Virus (HaNPV) @ 450 LE/ha and Bacillus thuringiensis 1000 ml/ha were evaluated. Among the modules tested, three sprays of endosulfan was found the most effective in controlling gram pod borer (6.83% pod damage) resulting in the maximum grain yield (2489 kg/ha). This was followed by the module of neem oil-HaNPV-endosulfan (7.92% pod damage and 2267 kg/ha yield). The cost benefit ratio (CBR) varied from 0.17 to 6.97. The maximum CBR (4.14) was recorded in the three sprays of endosulfan as against 6.97 in the recommended spray schedule (RSS). The spray of neem oil and HaNPV alternated with endosulfan was also found effective against the pest with a CBR 1: 2.92.
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