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- Title
Management of rice yellow stem borer, Scirpophaga incertulas Walker using some biorational insecticides.
- Authors
Chatterjee, Sitesh; Mondal, Palash
- Abstract
The experiments were carried out to study the performance of some biorational insecticides against yellow stem borer, Scirpophaga incertulas Walker in Boro rice at Rice Research Station, Chinsurah, Hooghly, West Bengal during the year 2009-10, 2010-11 and 2011-12. Nine treatments viz. Beauveria bassiana (Panther BB) @ 4 g/l, Beauveria bassiana ( Myco-Jaal) @ 4 ml/l, Metarhizium anisopliae (Nodule Testing Laboratory, BCKV) @ 2 g/l, Bacillus thuringiensis(Panther BT) @ 1.5 g/l, Bacillus thuringiensis(Nodule Testing Laboratory, BCKV) @ 1.5 g/l, Azadirachtin 10,000 ppm @ 1 ml/l, Spinosad 45%SC @ 2 ml/15 l, Phosphamidon 40% EC @ 1.5ml/l of water and untreated control (Water Spray) were laid out in randomized block design with three replications. The observations on per cent of dead heart and white ear head along with yield of the crop in different treatments were recorded. Spinosad 45%SC proved most effective in managing the insect population as lowest DH% and WE% were observed in all the crop growing seasons. Result on pooled analyses revealed that 80.27% and 67.10% reduction of dead heart and white ear head were achieved over the control by two sprayings of Spinosad 45%SC which resulted in 69.96% increase of yield over the control. Apart from Spinosad 45%SC, Phosphamidon 40% EC also proved better in reducing the dead heart and white ear head as well as in per cent increase of yield over the control.
- Subjects
RICE diseases &; pests treatment; CHILO suppressalis; BIOLOGICAL insecticides
- Publication
Journal of Biopesticides, 2014, Vol 7, p143
- ISSN
0974-391X
- Publication type
Article