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Department of Agricultural Entomology, S.V. Agricultural College, ANGRAU, Tirupati-517 502.
Lasioderma serricorne is a cosmopolitan, polyphagous and major insect pest of stored turmeric. TNAU Stack probe trap is recommended for detection and monitoring of insect pests in stored rice, wheat and turmeric. Practical studies were carried out to assess the trapping efficacy of the stack probe trap in combination with pheromone lure. The frequency of detection of L. serricorne at ten days after fumigation in stack probe trap alone, with lure inside and outside the trap was 36.67, 43.33 and 33.33 per cent, respectively. The mean number of beetles trapped in probe traps alone, with lure outside and inside was recorded as 1.88, 2.64 and 2.05 beetles per trap, respectively. The frequency of detection and mean number of beetles trapped per trap was low in traps with lure inside the trap compared to traps with lure outside. The sex ratio of beetles trapped in stack probe trap alone was 1.08: 1 (male: female) while in case of traps with lure outside and inside the trap, the ratio of male to female was 5.06: 1 and 4.13: 1 and the high male to female ratio in trap with lure might be due to attraction of more males to the sex pheromone. Though there was a slight increase in trapping efficiency of stack probe traps in combination with pheromone lures, it was found that combination of pheromone lure and traps was not economical in long run due to high cost of pheromone lure.
KEYWORDS: TNAU-Stack probe trap, Lasioderma serricorne, Pheromone lure, Fumigation, Turmeric warehouses.