Vol. 7, Special Issue 6 (2019)
Comparative efficacy of different botanicals against yellow stem borer (Scirpophaga incertulas walker) of rice
Author(s): DP Singh, Triveni Tiwari and Alok Pandey
Abstract: An experiment was carried out in the field laboratory, Krishi Vigyan Kendra, Basuli Mahrajganj (U.P.) to evaluate the comparative efficacy of different botanicals against yellow stem borer (Scirpophaga incertulas Walker) during kharif 2018. The treatments included four botanical insecticides i.e. NSKE 5% @25 kg/ha, Neemazal 1.0% Aza. @ 3lit/ha, Nimbolin 0.15% Aza. @ 3 lit/ha and Neembaan 0.15% Aza. @ 3 lit/ha and one chemical control Coragen 20% SC @ 150 ml/ha. The efficacies of treatments were evaluated based on the percent dead heart and white head resulted by rice stem borer infestation at vegetative and reproductive stages, respectively. The efficacies of treatments were varied significantly against the rice stem borers. Among the tested botanical/insecticidal treatments Coragen 20% SC @ 150 ml/ha was found most effective with minimum Dead Heart incidence of 3.55% at 50 DAT percent and 5.45 WE% as against 16.25% dead heart at 50 DAT and 21.50 WE% in untreated control plots The second most effective treatments was Neemazal 1.0% Azadirachtin @ 3.0 lit/ha (4.75% DH) followed by Nimbolin 0.15% Azadirachtin @ 3.0 lit/ha (6.65% DH). Maximum grain yield was also recorded for the treatment Coragen 20% SC @ 150 ml/ha (3350 kg/ha) followed by Neemazal 1.0% Azadirachtin @ 3.0 lit/ha (2850 kg/ha).
Pages: 828-830 | 483 Views 102 Downloads
download (4108KB)
How to cite this article:
DP Singh, Triveni Tiwari and Alok Pandey. Comparative efficacy of different botanicals against yellow stem borer (Scirpophaga incertulas walker) of rice. International Journal of Chemical Studies. 2019; 7(6): 828-830.
