Management of Helicoverpa armigera (Hubner) on chickpea (Cicer arietinum L.)
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Date
2021-12
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Sher-e-Kashmir University of Agricultural Sciences and Technology of Jammu
Abstract
The thesis embodies the results of experimentation made on Management of Helicoverpaarmigera (Hubner) on chickpea (Cicer arietinum L.) carried out during cropping seasons of 2020-21 at Chatha Farm, SKUAST- Jammu. Studies revealed that Helicoverpaarmigera was found as major pests, causing significant damage in different crop growth stages of chickpea. The incidence of Helicoverpaarmigerawas observed during the 5th¬ Standard week i.e., 03rd February, 2021 at the flowering stage of the crop with an initial population of 0.8 larvae per square meter. The correlation studies reveled that a significant positive correlation existed between weekly mean temperature (0.527*), highly significant negative correlation with relative humidity (-0.643**). The overall impact of weather factors on larval population H. armigera on chickpea was 57 per cent, respectively. The trap catches of H. armigera during 16th standard week which was recorded as highest with 42.21 (helilure) 52.42 (spodolure). A highly significant negative correlation with relative humidity (-0.678**) was observed in helilure. A significant positive correlation with mean temperature (0.576*), highly significant negative correlation with relative humidity (-0.733**) was observed in spodolure. The overall impact of weather factors on pheromone trap catches (helilure, spodolure) of adult H. armigeraon chickpea was 73 per cent and 69 per cent, respectively.
Among the different modules tested against H. armigera, Module Ⅲ was found to be superior in reducing the larval population of H. armigera. In case of yield attributes against H. armigera, all the modules showed significantly different results i.e. Module Ⅲ (2366.6kg/ha) accounted maximum chickpea yield than other modules Ⅱ (1944.4kg/kg), Ⅰ (1511.1kg/ha), Ⅳ (911.1kg/ha) and Ⅴ (466.6kg/ha) after harvest.
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Preferred for your work_Suryanarayana, N.S.2021. Management of Helicoverpaarmigera(Hubner) on chickpea. SKUAST-JAMMU