Evaluation of Some Commercially Available Insecticides against Mango Leaf Gall Midge Procontarinia matteiana (Diptera: Cecidomyiidae)

‘India produces the most mangos in the world, yet it has the lowest production among the top five countries. One of the most important difficulties confronting the mango business is pest complexes that destroy fruits, blooms, stems, and foliage. Over 400 pests attack mangos around the world. Mango leaves are attacked by many Cecidomyiidae species, particularly those of the genus Procontarinia. The most frequent and ubiquitous species, Procontarinia matteiana (Kieffer & Cecconi), is a well-known mango pest across Asia and Africa. The adult midge is a tiny insect that dies after 24 hours of emergence following copulation and oviposition. Small wart-like galls can be found on the leaves. Leaves that have been heavily galled curl up and drop prematurely. As a result, photosynthetic efficiency is reduced, and normal physiological activity of the tree is disrupted, resulting in lower mango fruit harvests. As a result, in two consecutive seasons, a study was carried out on selected uniform plants (cv. Himsagar) at a private orchard in Chhotajagulia, North 24 Parganas, West Bengal, India, to assess the bioefficacy of new insecticide mixtures alongside conventional insecticides against mango leaf gall midge (2017-18). The study’s goal is to determine the bioefficacy of several newly developed insecticides and insecticidal modules, as well as conventional insecticides and biopesticides, in controlling mango leaf gall midges. The study used a randomized block design with three replications of each treatment and an untreated water spray control. There were eight treatments in total, including the control. A total of 500 leaves were randomly selected from a branch to be examined and the percentage of newly developed and mature galls on fresh leaves calculated. The damage was measured at weekly intervals by counting total leaves vs afflicted leaves. The combination of beta-cyfluthrin 9 percent + imidacloprid 21 percent 300 OD@ 75 g a.i/ha was shown to be the most effective in reducing leaf gall infestation, followed by thiamethoxam 12.6 percent + lambda cyhalothrin 9.5 percent 247 ZC @ 22 g a.i/ha

Author(S) Details

Tirthankar Dalui
Department of Zoology, Barasat College, 1 Kalyani Road, Kolkata-700126, India.

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