Mst. Majida Khatun
Senior Scientific Officer
Tuber Crops Research centre, BARI
Gazipur
A. K. M. Z. Rahman and M. K. R. Bhuiyan
Scientist
Tuber Crops Research centre, BARI
Gazipur
An experiment was conducted to evaluate the effect of mulch, sex pheromone and insecticides in controlling sweet potato weevil. Plots with pheromone treatment had 8.53% and 7.08% root infestation by number for plastic trap and earthen trap respectively while 9.08%, 65.51% and 77.58% root infestation by number in straw mulch, Marshal and untreated control plots respectively which differed significantly. Weight of infested root in the plots with pheromone traps had 0.45t/ha (Earthen trap) which differed significantly from another treatment and as a pheromone trap, earthen trap had better performance than plastic trap in trapping sweet potato weevil.
Population, Management, Sweet Potato, Weevil
Pest Management
To know the sweet potato weevil status and their proper management
The experiment was carried out in the experimental field of TCRC, BARI at Joydebpur following RCBD design with three replications. Vines of Kamala Sundry were used as planting materials. Unit plot size was 3m x 3m maintaining spacing 60 cm x 25cm. Fertilizer was used as per recommended dose and when necessary. The experiment was set on November 09, 2007. Three treatments viz. straw mulch, pheromone and insecticide Marshal were included in the study. There was an untreated control. Spraying was done twice. In one set of plots two types pheromone traps were placed which was earthen pot and plastic plot. Trapped adult males were removed at 3 days intervals. At harvest, data were collected on the percentage of root damage by number and weight as well as weight of infested and non infested roots and yield of roots.
Annual Report-2007-08, TCRC
25,000/=
Sex pheromone traps reduced infestation of the sweet potato roots. As a pheromone trap earthen pot had better performance than plastic pot in trapping sweet potato weevil.
Report/Proceedings