ABSTRACT: Efficacy of seven acaricides namely Haysulf DF 80%, Ethiosul 46.5EC, Aimcoflo 80WDG, Thiovit 80WDG, Ambush 1.8EC, Omite 57EC and Sharper 5WDG with concentrations of 0.13%, 0.06%, 0.35%, 0.06%, 0.04%, 0.06% and 0.05%, respectively were evaluated against jute yellow mite Polyphagotarsonemus latus. The investigations were done in the Jute Agriculture Experimental Stations at Dhaka and Manikgonj during the jute season 2014. Sharper 5WDG showed the highest mortality rate of mite at 24, 48 and 72 hours after treatment and the mortally was 86.8%, 94.0% and 95.7%, respectively. All the acaricides revealed significantly lower rates of plant infestation compared to control, and the Sharper 5WDG exerted the lowest infestation in both the stations. The acaricide treatments significantly increased height and base diameter of plants, and yield in both the stations compared to control. The increased yield over control at Dhaka and Manikgonj ranged from 24.2% to 35.1% and 25.3% to 45.1%, respectively. The tested acaricides showed significant efficacy against jute yellow mite and the most effective result was obtained with Sharper 5WDG.
Keywords: Acaricide, Polyphagotarsonemus latus, infestation, mortality, yield
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