Efficacy of Some Botanicals Against Major Insect Pests of Okra

摘要

Field experiment laid out in Randomized block design (RBD) with three replications and nine treatments at Experimental farm School of Agricultural sciences and Rural Development Medziphema, Nagalandto study the incidence andeffcacy of some botanicalsagainst insect pests of okra has revealed that twelve insect pest was recorded during the course of investigation, The highest incidence of aphid was observed on 15th August (33rd std. Week), Jassid 8th August (32nd std. Week), blister beetle 25th July (30th std week) and Shoot and fruit borer 22nd August (34th std. Week) respectively. Efficacy of different treatments revealed that Melia azedarach leaf extract (2%), Neem oil(0. 5%) andNeemoil (0. 4%)was most effective against aphid, Neem oil (0. 5%) andNeem oil (0. 4%) against jassid, Neem oil (0. 5 %) and Melia azedarach leaf extract (2%) against blister beetle and Neem oil (0.5%)was found to be most effective against shoot and fruit borer followed by Melia azedarach leaf extract (2 %). It was also evident that all the plant products was more or less effective in minimising the pest population.