Entomological survey on cotton whitefly in district Bahawalpur

An entomological survey on pest scouting of whitefly in standing cotton was conducted to evaluate month -wise comparison of spots of Above and Below Economic Injury Level (AEIL and BEIL) in District Bahawalpur during 2012-2013. Spot-wise population of whitefly was recorded 3.15%, 0.00%as above EIL with 80.75% and 88.96% below EIL during May in both the years respectively. However 15.76% and 5.04% spots were recorded above EIL and 77.97%, 86.69% below EIL during June in both the years. During July gradually i ncreased spots were recorded 18.65%, 8.92%of above EIL and 81.35% and 91.08% below EIL.During August above EIL of spots were recorded 17.51%; 11.46% with below EIL was 81.49% and 88.54%. However in September 23.13%, 19.68% spots infested were AEIL with 76.87% and 80.48% were recorded BEIL. During October maximum 34.45% spots were recorded above EIL but 65.55% spots were recorded BEIL during 2013. However during 2012, the spot-wise population of whitefly trend decreased as 16.67% above EIL but 83.33% spots wasbelow EIL.Spot-wise comparison showed significant result (P 0.05) with each other but highly significant (P 0.05) to each other during 2013. However highest spots recorde d below EIL i.e. 147; 146 were showed non significant (P>0.05) result with each other but showed significant result (P<0.05) with all rest of the treatments during 2012. At the end it was concluded that population of whitefly was increasing above EIL gradu ally with the passage of time up-to October. However the cotton growersshould be vigilant during June -October. However the farmers were advised to do regular pest scouting in their fields with the consultation of plant doctors in crucial time to avoid high infestation of whitefly.