Effect of Synthetic Urea on the Population Dynamics of Sucking Insect Pests of Cotton

Abstract

Cotton is an important cash crop of Pakistan. Different biotic and abiotic factors are deteriorating the quantity and quality of the cotton directly or indirectly. From the biotic factor, sucking insect pests are most important because they lowering the photosynthetic activity of plants and also act as a vector of the disease-causing pathogen. Therefore, the experiment was conducted to evaluate the effect of synthetic urea on the population dynamics of sucking pest of cotton in Pakistan during 2016. Cotton plants were sown the filed under randomized complete block design (RCBD) with three replicates. Data were collected on a weekly basis and analysed through statistics 8.1. ANOVA of the population of sucking pests indicated that urea fertilizer significantly fluctuated the population of the cotton jassid, whitefly. Moreover, Duncan,s Multiple Range tests indicated that the population of sucking pests have elevated at the maximum level of urea fertilizer. This study would be helpful for the farmers for the appropriate use of fertilizer for crop production as well as crop protection.