Management of mango hopper with newer molecules and biopesticides under ultra high density planting system

Abstract

Management of mango hopper with newer chemical pesticides, entomopathogens and botanicals was carried out both under pot culture and field conditions during 2014-15 in UHDP mango orchard at R & D farm, JISL, Udumalpet, Tamil Nadu. Results of the experiment indicated that imidacloprid 17.8 SL @ 0.007% was superior to all the pesticide treatments with maximum mortality of the hopper observed on 1, 3, 7, and 14 day after spraying both in I and II sprays with mean mortality of 95.35 and 94.06 percent respectively and on par with thiomethoxam 25 WG @ 0.0025% expressing next best efficacy with mean mortality of 93.99 and 88.56 percent respectively. Malathion 0.075% though found effective was least effective among chemicals pesticides tested. Among botanicals neem oil and pungam oil at 1% were found on par with each other in their efficacy and found superior to NSE 5% with a mean mortality ranging from 79.71 – 66.40 percent in both I & II rounds of spray. The entomopathogens Lecanicillium lecanii 1.15%WP was found superior in controlling the mango hopper with a mean mortality of 86.04 and 71.99 percent recorded both in I and II round of spray treatment respectively under field conditions.