Journal of Biopesticides (2013) 6, 144-148
K.C. Ahirwar, R.S. Marabi, A.K. Bhowmick and S.B. Das (2013)
Evaluation of microbial pesticides against major foliage feeders on soybean [Glycine max (L.) Merrill]
Journal of Biopesticides 6 (2), 144-148
Abstract: Field trial was conducted during Kharif season with six microbial treatments against foliage feeders of soybean crop. On the basis of overall mean the differences in larval population of Chrysodeixis acuta among different treatments were found significant over control. Among these treatments, Bacillus thuringiensis var. kurstaki (4.26 larvae/mrl) was found to be most effective followed by Beauveria bassiana (5.06 larvae/mrl), Metarhizium anisopliae (6.06 larvae/mrl), Spinosad 45 SC (6.40 larvae/mrl) and Dipel (7.56 larvae/mrl). Verticillium lecanii (8.03 larvae/mrl) was found to be the least effective treatment. Similarly, overall mean larval population of Spodoptera liura among different treatments also varied significantly after 3rd, 7th and 10th days of spraying. Among various treatments, B. thuringiensis var. kurstaki was found to be most effective as it recorded the lowest larval population (3.63 larvae/mrl) followed by B. bassiana (3.93 larvae/mrl), M. anisopliae (4.53 larvae/mrl), Spinosad 45 SC (4.66 larvae/mrl), Dipel (5.80 larvae/mrl). All the treatments exhibited significantly higher yield as compared to control. It was maximum in treatment, B. thuringiensis var. kurstaki (26.97 q/ha) followed by B. bassiana (24.04 q/ha), M. anisopliae (20.92 q/ha), Spinosad (20.83 q/ha), Dipel (20.72 q/ha) and V. lecanii (16.21 q/ha). The lowest grain yield was recorded in the control plot (14.88 q/ha).
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Research topic(s) for pests/diseases/weeds:
biocontrol - natural enemies
Research topic(s) for beneficials or antagonists:
evaluation - screening - selection
