Effective management module to minimize the crop loss in Alphonoso mango due to mango hopper, Idioscopus niveosparsus Leth.
Munj A. Y., Halgekar N. Y., Salvi B. R., Narangalkar A. L.
Author Affiliation: Regional Fruit Research Station, Vengurle 416 516, Dist. Sindhudurg, Dr. B. S. Konkan Krishi Vidyapeeth, Dapoli, Dist. Ratnagiri (M.S.), India.
Environment and Ecology 33 : 1969-1971
Abstract : Alphonso is the leading variety of mango grown in Konkan region of Maharastra. It is famous world wide due to its excellent fruit quality and taste. Mango hopper, Idioscopus niveosparsus is the major insect pest of Alphonso mango. The hot and humid climate of Konkan region is fovorable for the growth of mango hopper. The nymphs and adults suck the cell sap from all tender parts of tree viz., tender foliage, inflorescence and small fruits and excrete honeydew like substance on plant parts on which the black capnodium fungus develops giving blackish appearance to whole plant. The black capnodium fungus hardies the photosynthesis which intern adversely affect the yield. The field experiments were conducted with only one insecticide spray, two sprays and three sprays as different modules to minimize the crop loss due to mango hopper. The results indicate that the module of three sprays (first spray of imidacloprid 17.8 SL @ 0.005% conc at panicle emergence stage, second spray of quinalphos 25EC @ 0.05% conc 21 days after spray and third spray of thiomethoxam 25 WG @ 0.005% conc 15 days after second spray) was found most effective for management of mango hopper with highest yield (3.00 tones/ha), maximum percent avoidable crop loss (52%) and high C:B ratio (1:2.30).