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Year: 2015, Issue: June

Field bioefficacy of biopesticides in controlling the Tur plume moth [Exelastis atomosa (Wals)] on pigeon pea.


Sagar Anand Pandey and S. B. Das


Exelastis atomosa, Bio-pesticides, Spores, Larval population.
A field experiment was conducted during the kharif season 2012-13 at experimental field of Department of Entomology Live Stock Farm, Adhartal, JNKVV, Jabalpur (M.P.). The experiment was laid out in randomized block design with three replications. The pigeon pea variety JA-4 was sown in the plot size of 5 m X 12.6 m at 60 cm spacing (row to row). The recommended package of practices was followed except plant protection measures. The experi- ment was consisted eight treatments viz., Beauverea bassiana @ 1x1012 spores/ml, Metarrhizium anisopliae @ 1x1012 spores/ml, Paecilomyces fumosoreseus @ 1x1012 spores/ml, Verticillium lecanii @ 1x1012 spores/ml Bacillus thuringiensis var. Kurstaki (PDBC-BT-1) 1.5 lit/ha, Neem soap 10 g/lit and Pongamia soap 10 g/lit along with untreated control. The bio-pesticides were sprayed in the 1st week (5/12/12), 3rd week (16/12/12) and 4th week (26/12/12) of December through knapsack sprayer. The population of Exelastis atomosa Wals was recorded a day before spraying and 3rd, days 7th days and 10th days after spraying. The results indicated that all the biopesticides significantly reduced the larval population as compared to control after each spraying. Among the biopesticides, Beauveria bassiana was found to most effective to reduce the larval populations of tur plum moth. The mean E.atomosa larval population/25 pods was lowest with Beauveria bassiana @ 1x1012 spores/ml at three days (1.19) seven days (1.03) and ten days of spray (0.76) as compared to control i.e., 3.18, 3.29 and 3.66 at 3th days, 7th days and 10th days of spray, respectively. The least ef- fective biopesticide was Paecilomyces fumosoreseus @ 1x1012 spores/ml in controlling the E.atomosa population.

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