Chakravarty, Dr. M.K.Omarzai, Shir Ali2021-02-222021-02-222019https://krishikosh.egranth.ac.in/handle/1/5810161449BIOLOGY AND ECO-FRIENDLY MANAGEMENT OF PULSE BEETLE (Callosobruchus chinensis L.) ON FIELD PEA (Pisum sativum L.) IN STORAGECallosobruchus chinensis L. is a major stored grains pest of pulses in India that infests pulses in the fields also. An experiment has been conducted on two varieties (HUDP 15 and DDR 23) of field pea in the department of Entomology, Birsa Agricultural University, Kanke, Ranchi (Jharkhand). The objectives of the study were to study the biology of pulse beetle in field peas and to study the management of pulse beetle applying of edible and non-edible oils. The biology of pulse beetle was investigated during July to November,2018 whereas management studies were conducted during December,2018 to January,2019. The average fecundity was maximum (73.20 eggs) on HUDP 15 variety and it was minimum (69.26 eggs) on DDR 23 variety of field peas. Maximum 67.10 per cent average eggs were hatched on HUDP 15 variety but it was as minimum 51.55 per cent on DDR 23 variety. The average range of larval + pupal period and adult longevity on HUDP 15 variety were from 19.66 to 33 and 7.5 to 10.66 days and from 20.66 to 36 and 6 to 9 days on DDR 23 variety of field pea. The average of damages that caused by pulse beetle during three generations on HUDP 15 variety was 50.63 per cent and it was 30.92 per cent on DDR 15 variety respectively. The grain protectants used in the study indicated that, all the seven oils/treatments viz. soybean, sunflower, mustard, coconut, karanj, castor and neem used @ 2ml, 3ml and 5ml/kg seed significantly reduced the number of emerged adults and extent of damaged after 45 days of treatment. The adult mortality of soybean, sunflower, mustard, coconut, karanj, castor and neem used @ 2ml/ kg seed was recorded from 33.30 to 89.99 per cent after 240 hours of treatment on both HUDP 15 and DDR 23 varieties. The adult mortality of soybean, sunflower, mustard, coconut, karanj, castor and neem used @ 3ml/ kg seed was recorded from 39.96 to 93.28 per cent after 240 hours of treatment on both HUDP 15 and DDR 23 varieties. The adult mortality of soybean, sunflower, mustard, coconut, karanj, castor and neem used @ 5ml/ kg seed was recorded from 63.28 to 96.62 per cent after 240 hours of treatment on both HUDP 15 and DDR 23 varieties respectively.EnglishThesis