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Effects of Seed Treatment and Soil Application with Some Insecticides on Stemfly and Pod Borers on Mungbean

M. A. ZAHID
Scientific Officer
ARS, BARI, Burirhat, Rangpur.

M, A. I. S ARKER
Scientific Officer
ARS, BARI, Burirhat, Rangpur.

M. M. I SLAM
Scientific Officer
ARS, BARI, Burirhat, Rangpur.

M. A. H OSSAIN
Senior Scientific Officer
RARS,BARI, Ishurdi, Pabna.

M. R. B EGUM
Senior Monitoring Officer
RDRS, Rangpur, Bangladesh.

Abstract/ Executive Summary:

For controlling stemfly (Opheoniyia phaseoli) and pod borers (Helicoverpa armigera & Maruca vitrata of mungbean insecticides Carbofuran, Carbosulfan, and Phenyl Pyrazol were applied as seed treatment and soil application during kharif II season (August to December) in 2004 and 2005 at Burirhat, Rangpnr. In two years, stemfly infested 86.67-93.33 percent rnunghean plants and caused 26.90-27.09 percent stem tunneling in untreated plots. Carbofuran in both seed treatment and soil application had similar effect on stemfly resulting 1.4 to 7.0 and 1.4 to 4.57 times less damage and stem tunneling, respectively, than the control. Pod borer damage did not differ significantly among the treatments in 2004, but differed in the second year. The yield of mungbean was significantly higher by the soil application of Corbofuran followed by the seed treatment by the same insecticides. But soil application of Carbofuran proved to be economical.

Keywords: Seed treatment, Soil application, Insecticides, Stemfly and pod borers, Mungbean

Location: Burirhat,Rangpur

Start Date: 00-08-2004

End Date: 00-12-2006

Program Area: Pest Management

Commodity: Mungbean

Objectives:

To evaluate the relative efficacy of some insecticides as seed treatment and soil application against stemfly and pod borers.

Methodology:

The experiments were conducted at Agricultural Research Station, Burirhat, Rangpur during the cropping seasons of mungbean from August to December of 2004 - 05 and 2005 - 06. The investigation was made to find out the most effective insecticides in seed treatment and soil application for controlling the stemfy and pod borers of mungbean. Carbofuran 5 (3 (Furadan 5G). Carbosulfan 6G (Marshal 6G) and Phenyl Pyrazol 3G (Regent 3G) @ 2 and 4 % were used in seed treatment and the same insecticides at 0.75 and 1kg a.i. /ha were applied in the soil with untreated control. The experiments were laid out in RCBD with three replicates. The unit plot size was 3m x 2.1m with an inter-plot distance of Im and inter block distance of 1.5m. The spacing was 30cm between rows and 10cm between plants. For seed treatments, required quantity of insecticides was mixed with ample water to prepare slurry with which seeds were treated (Sinha et al., 1993). The granules for soil application were applied in the soil below the seed furrows at the time of sowing. At harvest, 10 randomly selected plants from each plot were uprooted and stems were split opened by a scalpel for recording the extent of stem tunneling by stemfly. The lengths of the stem were measured by a scale. From these data, percentage of stemfly infested plants and percentage of stem tunneling were calculated. Percent stem tunneling was calculated by following way : Stem tunneling (%) =(Length of stem tunneling % /Total length of stem)x100. Numbers of pod borer infested pods were also counted at harvest. The yield of rnunghean seeds was recorded. Finally the data were analyzed statistically by using MSTAT programme and compared by DMRT. Correlation regression analysis was done to determine the relationship between stem tunneling and yield of mungbean as affected by each insecticidal treatment.

Source of Information: Bangladesh J. Agril. Res. 34(2) : 303-311, June 2009 ,ISSN 0258-7122

Article Link (Online Journal):

Funding Source:

Total Budget (Tk.) :

Achievement/Findings:

Carbofuran in both seed treatment and soil application had similar effect on stemfly resulting 1.4 to 7.0 and 1.4 to 4.57 times less damage and stem tunneling, respectively, than the control. Pod borer damage did not differ significantly among the treatments in 2004, but differed in the second year. The yield of mungbean was significantly higher by the soil application of Corbofuran followed by the seed treatment by the same insecticides. But soil application of Carbofuran proved to be economical.

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