Evaluation of Repellency of Plant-Derived Insecticide against Brinjal and Pepper Pest Populations

Abstract

The study was carried out on the Evaluation of repellency of plant-derived insecticide against brinjal and pepper pest populations. Two crops brinjal and pepper were sown separately and sprayed with Neem Seed Extract against whitefly, jassid, aphid, borer and predators. The population was significantly higher 3.70 whitefly/ leaf on brinjal variety F1-advanta-305 as compared to PPL 3.10/ leaf and Black long 3.31/ leaf respectively recorded on 20th January. Similarly, the population was relatively higher was 2.86, 2.72 and 2.44 jassid/ leaf on F1-advanta-305, PPL and Black long varieties respectively on 25th January. Aphid population was slightly higher 2.79, 2.39 and 2.26/ leaf on Black long, F1-advanta-305 and PPL varieties respectively. Likewise, the predator population was higher 2.26, 1.99 and 1.94/ plant on brinjal varieties of F1-advanta-305, Black long and PLL respectively on 4th February. The population was significantly higher 6.33, 5.28 and 4.8 whiteflies/ leaf on Talhari, Moro chilly and Mirch shehzadi respectively on pepper varieties on 25th January. Similarly, the jassid population was relatively higher 1.89, 1.83 and 1.79/ leaf on Moro chilly, Talhari and Mirch shehzadi respectively on 19th February. The population was higher 3.24, 3.04 and 2.58 aphids/ leaf on Talhari, Moro chilly and Mirch shezadi varieties respectively on 25th January. The predators’ population was higher 1.61, 1.53 and 1.33/ plant on Moro chilly, Talhari and Mirch shezadi varieties respectively on 9th February. Since pest population increased beyond ETL on 25th January. Therefore 2% neem seed extract was applied. These applications kept the pest population below ETL.