Abstract

Sahito, HA, Memon, SA Kaleri, NH, Mal, B Dhaunro, AA and Kaleri, S

In order to compare the population of insect pests and predators under IPM and chemical control application in cauliflower, the studies were carried out during the year 2010-2011. Riverm (Biopesticide) along with farmyard manure (FYM), Chrysoperla carnea and Trichograma chilonis were used as IPM strategies. While, Confidor 20SL and Prophenophos 50EC pesticides were applied for controlling cauliflower insect pests. The data of both the plots were compared with Check plot. The results indicated that lowest activities of all insect pests were recorded in non-IPM except whitefly. The overall mean population 23.29, 3.32, 1.92, 0.36 and 0.09 per leaf/plant of thrip, whitefly, aphid, diamond backmoth and semilooper were recorded in non-IPM while, their populations 27.40, 3.17, 2.25, 0.77 and 0.12, respectively were recorded in IPM plot as compared to check plot where their populations were recorded as 47.22, 8.88, 7.72, 1.18 and 0.38, respectively. In contrast to pest population, the predators, parasitoid were found more active in check plot. In check plot the population of predators such as spiders, paedeurs, zigzag beetle, Chrysoperla carnea and Trichograma chilonis were recorded as 0.119, 0.076, 0.073, 0.043 and 0.016, respectively. However their populations 0.17, 0.06, 0.05, 0.26 and 0.005, respectively were recorded in IPM plot. The T-test showed significant different in pest and predators population between IPM and non-IPM and between non-IPM and check plot except parasitoid which non-significantly appeared in IPM and non-IPM plots.