Urea and nano-urea impact on population of Bemisia tabaci gennadius and Aphis gossypii Glover in sunflower, Helianthus annus L.

Abstract

An experiment on “Urea and Nano-Urea impact on the population of Bemisia tabaci Gennadius and Aphis gossypii Glover in Helianthus annus L.” was carried out in north bank plain zone of Brahmaputra, Biswanath district during 2021-2022. The experiment was laid out in randomized block design with 3 replications and 10 treatments. The treatments consist of different nitrogen management combinations including conventional urea and foliar application of conventional and nano urea. B. Tabaci and A. Gossypi population were found more in conventional urea-treated plots as compared to nano urea. Foliar application of nano urea is a better substitute for traditional urea in terms of lower insect population and increase yield.