Coloured sticky traps to monitor thrips population in cotton
M Shanmuga Prema, N Ganapathy, P Renukadevi, S Mohankumar and JS Kennedy
Different coloured sticky traps includes blue, white, yellow, red and green were used to monitor the movement of thrips and the number of thrips catches at different growth stages of cotton. Results of two field trials confirmed that yellow sticky trap attracted more number of thrips compared to other colours. Yellow sticky trap recorded maximum mean thrips catches of 124.00 and 102.47 Nos./trap in the first and second trial, respectively. Blue and white colour traps are the next best preferred by thrips in cotton ecosystem. Least numbers of thrips catches were recorded in red and green traps in both the trials. Thrips catches were also high during the vegetative and initial flowering stages (45 to 90 DAS) of cotton crop.