SHIVANI SHARMA, HEMANT SWAMI, LEKHA, CHANDRA BHAN AND H.L. BAIRWA

The present investigation on life cycle of Rangeeni strain of lac insect Kerria lacca (Kerr) on ber, pigeonpea and Flemingia was carried out at the lac insect gene bank and lac laboratory, situated in Department of Entomology, Rajasthan College of Agriculture, MPUAT, Udaipur during Katki season, 2017. The mean duration of pre-sexual stages of Rangeeni strain lasts 46.77, 47.53 and 48.93 days from the inoculation of broodlac with 11.50, 12.73 and 13.27 days mean duration of male emergence on ber, Flemingia and pigeonpea, respectively and 10.51, 11.02 and 11.17; 11.33, 1323 and 13.59; 10.78, 11.17 and 11.86 per sq. cm of per cent male in upper, middle and lower portion of host plant in three sets of experiment, respectively. The total life period of Rangeeni strain of lac insect in Katki crop season on ber, Flemingia and pigeonpea was recorded 115, 118 and 120 days, respectively. The fecundity of female cell was recorded to have 443.37, 387.70 and 336.07 crawlers (per female cell) on ber, Flemingia and pigeonpea, respectively. The mean of scrapped lac yield recorded was 0.74, 0.35 and 0.22 kg for ber, pigeonpea and Flemingia, respectively.