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841 and 11 13 glha, and endosulfan ec a t 432 and 649 glha 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.Aerial application of malathion LVC at 893 and 1330 glha, malathion EC a t 927 g/ha, carbaryl SP at 557,

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