Study the Seasonal Abundance of Diamondback Moth and Natural Enemies in Cauliflower

Abstract— The infestation of diamondback moth was started from the 2nd SMW and reached its peak in 8th SMW during the year. The maximum temperature showed significant positive correlation with larval population of diamondback moth. Coccinellid predator, Coccinella septempunctata L. was recorded as a major predator in cauliflower ecosystem which was maximum in the11th SMW of the year. The maximum and minimum temperature significant positive correlation with the population of C. septempunctata. Among different newer insecticides tested against diamondback, spinosad was found to be most effective which was found at par with indoxacarb. The insecticides, emamectin benzoate, chlorantraniliprole and fipronil were found moderately effective. The chlorfenapyr, acephate and pyridalyl were found least effective. The maximum yield of cauliflower heads was registered in the plots treated with Spinosad 45 Sc, which was found at par with indoxacarb 14.5 Sc, the latter treatment was also non-significant with flubendiamide 39.35 Sc. The minimum yield was observed in pyridalyl 10 Ec and acephate 75 Sp. All the treatment were significantly superior over control. The order of yield revealed by different treatments was spinosad= indoxacarb≥ flubendiamide≥ emamectin benzoate≥ chlorantraniliprole≥ fipronil= chlorfenapyr› acephate= pyridalyl› control.