The current study, "Seasonal Incidence of Eriophyid mite (Aceria cajani Channabasavanna) on Pigeonpea," was conducted in Kharif 2022 at the Mahatma Phule Krishi Vidyapeeth, Rahuri, at the Research Farm of Pulses Improvement Project. The goal of the current study was to determine the seasonality of the eriophyid mite (A. cajani) infestation on pigeonpea. According to research on seasonal incidence, mite incidence was observed from the 29th standard meteorological week (1.63 mites/trifoliate leaves) until the crop was harvested on the 49th standard meteorological week (1.60 mites/trifoliate leaves). The 42nd standard meteorological week had the highest mite population (4.92 mites/trifoliate leaf). The incidence of mites and maximum temperature showed a highly non-significant negative correlation (r = -0.313**), while the minimum temperature showed a positive correlation (r = 0.036**). On the other hand, a highly non-significant positive correlation (r = 0.066**) was found with evening relative humidity and a highly non-significant negative correlation (r = -0.017**) with morning relative humidity. On the other hand, a non-significant negative correlation (r = -0.289*) was found between the mite population and rainfall

Pigeonpea, Eriophyidmite (A. cajani), Seasonal incidence, Sterility mosaic, Weather parameter

From this study it is concluded that mite population has both positive and negative correlation with temperature as well as humidity. Population decreases with increase in rainfall. It reached to its peak (4.92 mites/trifoliate leaves) during 42nd SMW i.e 3rd week of October. Afterwards, mites population decreased upto 49th standard meteorological week i.e.1st week of December (1.60 mites/trifoliate leaves) due gradual decrease in temperature

N.I. Patil, C.B.Wayal, S.T. Aghav and V.A. Chavan (2024). Seasonal Incidence of Eriophyid mite (Aceria cajani Channabasavanna) on Pigeonpea. Biological Forum – An International Journal, 16(6): 50-52.