Vol. 16 No. 2
Efficacy of some granular and sprayable formulations of insecticides against stem borer of rice
Author(s): L. SAHU, S. DASH, D. K. SWAIN AND S. ROY
Abstract: The experiment on efficacy of some granular and sprayable formulations of insecticides against stem borer of rice was conducted at the Central Farm of OUAT, Bhubaneswar, Odisha during 2015 with the objective of evaluating the efficacy of both sprayable and granular formulations of some newer insecticides having different mode of action in controlling stem borer of rice. Rice variety TN1 and Swarna were taken as test cultivar during rabi and kharif, respectively. Both granular and spray formulations of chlorantraniliprole exhibited better control of stem borer at vegetative stage of the crop resulting in 8.33-9.05% dead heart (DH) as against 24.57% in control during the peak activity of borer population, followed by the granular application of fipronil (12.25% DH). At heading stage also, chlorantraniliprole was highly effective and inflicted about 2.62 and 3.73% white ear head (WEH) as against 13.38% in control. Hence chlorantraniliprole in both granular and spray formulation can be recommended for effective control of stem borer.
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