Effect of cropping system on the incidence of Helicoverpa armigera Hübner on tomato
2006; Gazi Entomological Research Society; Volume: 30; Issue: 4 Linguagem: Inglês
ISSN
0974-4576
Autores Tópico(s)Agricultural Practices and Plant Genetics
ResumoStudy on the larval population of Helicoverpa armigera Hubner and its damage on tomato for 2 seasons in two areas, first consisting of Ranipur, Pakhanpur, Maheshpur and Sherpur villages, located at 20 to 30 km from Ghazipur and characterized by large scale vegetable cultivation on the bank of river Ganga and second one consisting of Chakatalivi, Chawarahi, Noorpur and Ranipur village, situated at 7–10 km from Ghazipur and characterized by typical paddy-wheat cultivation indicated 3 and 2 larvae per 5 plants and the 15.74 and 2.4 percent fruit damage, respectively. Analysis of differences in two localities indicated the absence of early pigeon pea in first locality unlike the second one where this crop was sparsely grown and had been harvested in November–December. Early pigeon pea is known to attract female moth for oviposition in October each year, which formed the initial inoculum for winter population on tomato and chickpea.
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