Abstract:Laboratory studies were conducted to assess the repellant effects of three essential oils from plants viz., orange, eucalyptus and cinnamon oils against four major coleopteran stored grain insect pests of rice viz., Sitophilus oryzae, Oryzaephilus surinamensis, Rhyzopertha dominica, and Tribolium castaneum. The % repellency (PR) and index of repellency (RI) were observed to range from 10 to 100% and 0.00 to 0.90, respectively. Eucalyptus oil @ 5% showed maximum repellent action against Tribolium castaneum, reg… Show more
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