Evaluation of some Environmentally Friendly Chemical Preparations in the Control of the Cotton Spiny Nut (Baisd) (Lepidoptera: Phalaenidae) Earias insulana

Abstract

The study was conducted on a farm belonging to Salah Al-Din Province, Al-Dujail District, Al-Sheikh Jamil District, for the season 2021. The study aimed to study the efficiency of the growth regulator Kinetin alone or in combination with insect growth regulators Runner, Match, and Matric in the resistance of the cotton spiny worm (Baisd) Earias insulana on the cotton plant Gossypium barbadense L. Coker class 310, using a randomized complete block design (RCBD) in the study. Where the study included the use of the plant growth regulator, Kinetin, at concentrations of 100, 200, 300 mg L-1, and the second, some types of insect growth regulators, namely Runner at a concentration of 1 ml L-1, Matric at a concentration of 0.5 ml L-1, and Match at a concentration of 0.5 ml L-1. The plant growth regulator kinetin plays an effective role in influencing the activity of the enzyme catalase in the leaves and bracts of cotton plants. Where the concentration of 200 mg L-1 contributed to increasing the activity rate of the catalase enzyme in leaves and bracts, reaching 22.28 and 19.68 enzyme absorption units g-1 fresh weight. The interaction treatment between the matrix growth regulator and 200 mg L-1-Kinetin excelled in reducing the infection rate, reaching 6.43% at the first spray after 15 days of treatment during the first field spray and 9.95% after 15 days of field treatment after the second spray.