Seasonal incidence and population fluctuation of Dipteran, Isopteran, Hymenopteran and Thysanopteran pests of mango.
Kannan M., Rao N. V.
Author Affiliation: Department of Entomology, S.V. Agricultural College, Tirupati - 517 502, India.
Journal of Plant Protection and Environment 3 : 50-55
Abstract : The incidence and population fluctuations of Dipterans (Leaf gall insects, Procontarinia matteiana Kieffer and Cecconi, Amradiplosis echinogalliperda Mani, Fruit fly, Bactrocera dorsalis Hendel), Isopteran (Termite, Odontotermes obesus Rambur) Hymenopteran (Oecophylla smaradigna Fabricius) and Thysanopteran (Thrips, Thrips haraiiensis Morg.) insects on mango crop under the conditions of Chittoor district of Andhra Pradesh, India were worked out. Peak population of leaf gall insects, fruit flies, termite and thrips were recorded on the second week of September, last week of May, last week of February and last week of January, respectively. The relationship of gall causing ceciidomids P. matteiana and A. echinogalliperda with temperatures and rainfall was not significant (positive correlation). However, the activity of fruit fly, B. dorsalis increased with increase in the temperature and decreased humidity. Red ant, O. smaradigna activity was increased when the rain fall and humidity declined. Thrips, T. hawiiensis was responsible for mango syndrome (flower and fruit Mangu) and the activity was more during decreased level of temperatures and rainfall.