Insect pests of upland rice in Uttar Pradesh [India]
1985
Nigan, P.M. | Verma, R.A. (C.S. Azad University of Agriculture and Technology, Kalyanpur Kanpur 208024 (India). Rice Research Station)
Upland rice in Uttar Pradesh is attacked by green leafhopper Nephotettix virescens (Distant), brown planthopper Nilaparvata lugens (Stal), leafroller Cnaphalocrocis medinalis (Guenee), butterfly Melanitis leda ismene (Cramer), rice bug Leptocorisa acuta (Thunberg) (-varicornis Fab.), stem borer Scirpophaga incertulas (Walker), armyworm Mythimna separata (Walker), and aphid Nysteroneura setariae (Thomas). Of those, N. virescens, L. varicornis, S. incertulas, and M. separata are of major importance. In recent years, M. separata has become inceasingly important, with severe infestations causing 60-80% yield losses. Losses to L. acuta are 15-20%, to S. incertulas 10-15%, and to N. virescens 5-10%
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