Abstract
Abstract Aerial application of malathion LVC at 893 and 1330 g/ha, malathion EC at 927 g/ha, carbaryl SP at 557, 841 and 1113 g/ha, and endosulfan ec at 432 and 649 g/ha was tested for the control of mango-hopper at 8 places in Hoshiarpur and Ropar districts of the Punjab using a fixed-wing aircraft for spraying in the end of February. The penetration of spray material through the deep canopy of seedling mango trees was good. There was 86–100% reduction in the pest population over control 9 days after treatment. Malathion LVC at 1330 g/ha proved to be the best. It gave an excellent knock-down and did not register any significant build-up in the mango-hopper population up to 51 days after spraying.
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