Patel, R. C.VAZE, GIRISH M.2018-07-042018-07-041980http://krishikosh.egranth.ac.in/handle/1/5810057018Laboratory as well as field studies were undertaken to study the biology and eontrol measures of citrus psylla, Diaphorina citri Kuwayama on kagzi lime. Observations were made on duration of egg, nymphal and adult stages and also on fecundity at varying room temperatures as well as under field conditions. It was observed that with the increase in temperature, the durations of egg and nymphal stages and adult longevity and fecundity were reduced. There were three peaks in nymphal population during the year, during the months February-March, July-August and November-December. Pest Population reached upto 18.10 nymphs/twig during the last week of february, 1979. Monocrotophos 0.04% and quinalphos 0.05% may be recommended for quick control of citrus psylla in seasonal outbreaks while dimethoate 0.03%, phosalone 0.035% and malathion 0.05% are suitable insecticides to spray with yearly pestioidal schedule to control this pest.enAGRICULTURAL ENTOMOLOGY, AGRICULTUREA STUDYThesis