Mango (Mangifera indica L) is an important crop grown in different parts of India. Mango hopper is a major pest of mango causing seviere yield losses. As the losses due ot mango hopper could be as high as 65 per cent in the absence of control measures, many insecticides have been recommended world-wide to control the pest. On farm trials were conducted by Krishi Vigyan Kendra, Namakkal to assess the management modules against leaf hopper in mango crop in terms of incidence of shredding of flower buds and flowers damage percentage, destroying the inflorescences and causing fruit drops, curling and drying of infested tissue, development of shooty mold and fruit yield per hectare during Kharif 2020 in Namakkal district. The treatment comprises T1-Spraying of Oil based Metarhizium anisophilae @ 1ml/ litre of water at 3 times per weekly interval + Setting of yellow sticky trap @ 25 nos./ha (IIHR, 2017); T2- Neem oil @ 5ml/litre or Nimbicidine 1500 ppm @ 4ml / litre at 2 times per weekly interval + setting of Yellow sticky Trap @ 25 numbers/ha recommended by (Tamil Nadu Agricultural University, 2016); T3 – (Farmers practice) spraying of Lamdacyclothrin @ 2ml/ litre; Imidachloprid @ 0.5 ml/ litre with wettable sulphur @1 ml /litre and Proponophos @ 1ml /litre + yield win tonic combination of insecticides 3 times per weekly interval packages. The study revealed that mango crop sprayed with oil based Metarhizium anisophilae @ 1ml/ litre of water at three times weekly interval + setting of yellow sticky trap @25 nos./ ha effectively controlled @ 3.4 number of leaf hopper /panicles in a single branch of trees at 15 days after spray; reduced number of young fruit dropped per tree @ 8.6 number; number of number of moths trapped in a single yellow sticky trap is 5.8 numbers; total fruit harvested /tree is 1402 with higher fruit yield of 106 quintal/ hectare as compared to other practices. Whereas the farmers practice of spraying Lamdacyclothrin @ 2ml/ litre; Imidachloprid @ 0.5 ml/ litre with wettable sulphur @1 ml /litre and Proponophos @ 1ml /litre + yield win tonic combination of insecticides at 3 times at weekly interval recorded 5.2 number of leaf hopper /panicles in a single branch of trees at 15 days after spray; number of young fruit dropped per tree @ 11.4 number; total fruit harvested /tree is 1146 with higher fruit yield of 95.2 quintal/ hectare in kharif season.