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Herbicidal Weed Control in Mungbean in Summer Season

M.S. Alam
Pulses Research Centre and Regional Agricultural Research Station, Ishwardi, Pabna 6620

M.A.K. Mian
Agronomy Division, Bangladesh Agricultural Research Institute, Joydebpur, Gazipur 1701

M.R. Islam
Pulses Research Centre and Regional Agricultural Research Station, Ishwardi, Pabna 6620

M.S. Alom
Agronomy Division, Bangladesh Agricultural Research Institute, Joydebpur, Gazipur 1701

Abstract/ Executive Summary:

A herbicidal field trial was conducted at Pulses Research Centre (PRC), Ishwardi, Pabna to find out suitable herbicide for controlling weeds in mungbean grown in summer season. There were ten herbicidal treatments including one control (no herbicide). Treatments namely Paraxon (27.6% WV paraquat dichloride salt) @ 3.73 mL L-1 water, Basta15 SL (Gluphosinate-ammonia) @ 4 mL L-1 water, Topstar 40 WP (40% Oxadiargyl) @ 200 g ha-1 with 400 L water,U-46 D Fluid (2,4-D) @ 6 mL L-1 water, Whipsupper ( 9% Phenoxaprop-T- Ethyl) @ 2 mL L-1, Weedkill (2,4-D Dimethyl amine salt) @ 1000 mL ha-1 with 500 L water, M-clore 5G (Butaclore) @ 2.5 g m-2 L -1 water, Hammer 24 EC (Carfentrazone ethyl) @ 1 mL L-1 water, Panida 33 EC (Gluphosinateammonia) @ 4 ml L-1 water and control were laid out in a RCB design with three replications. All herbicides were applied as pre emergence. Among the herbicides, Paraxon, Topstar and panida showed the highest weed control efficiency (58.33-63.17 %). Seed yield was also found the highest (1170-1240 kg ha-1) in Paraxon and Topstar. Paraxon, Topstar and Panida showed better economic performance representing higher gross margin (Tk. 54610-59635 ha-1) and BCR (3.54-3.84). Seed yield was negatively correlated with weed population (r=0.88 at p=0.01) and positively correlated with weed control efficiency of herbicides (r=0.96 at p=0.01). These three herbicides can be used to control weeds in mungbean field in summer season as a low cost weed control method.

Keywords: Herbicides, Weed, Mungbean, Yield

Location: Pulses Research Centre (PRC), Ishwardi, Pabna

Start Date: 00-03-2012

End Date: 00-05-2012

Program Area: Pest Management

Commodity: Herbicide, Mungbean

Objectives:

Moreover, peak period of labour in summer season makes the weed control situation more critical in munbean cultivation. Simultaneous works of boro harvesting and weeding of jute and other summer crops creates labour crises. So, farmers are not interested to cultivate mungbean in summer due to weed problem. Now, it is imperative to find out suitable low cost weed control methods for muungbean cultivation in summer. Therefore, an experiment was undertaken to find out suitable herbicide for controlling weeds in mungbean in summer season as a sustainable low cost weed control method.

Methodology:

The experiment was conducted at Pulses Research Centre (PRC), Ishwardi, Pabna during summer season month of March to May 2012 to evaluate the efficacy of herbicide and economic viability of herbicide application for controlling weed in mungbean. Ten weedicide treatments were Paraxon (27.6% WV paraquat dichloride salt) @ 3.73 mL L-1 water, Basta15 SL (Gluphosinate-ammonia) @ 4 mL L -1 water, Topstar 40 WP (40% Oxadiargyl) @ 200 g ha-1 with 400 L water,U-46 D Fluid (2,4-D) @ 6 mL L -1 water, Whipsupper ( 9% Phenoxaprop-T- Ethyl) @ 2 mL L-1, Weedkill (2,4-D Dimethyl amine salt) @ 1000 mL ha-1 with 500 L water, M-clore 5G (Butaclore) @ 2.5 g m-2 L -1 water, Hammer 24 EC (Carfentrazone ethyl) @ 1 mL L-1 water, Panida 33 EC (Gluphosinate-ammonia) @ 4 ml L-1 water and control. All herbicides were applied as pre emergence except whipsupper. The experiment was laid out in a RCB design with three replications. The soil of the experimental plot was silty loam having pH 7.5. Unit plot size was 4.5 m× 6 m. Seeding was done on 20 March 2012. The experimental plots were fertilized with nutrients @ 20-20-30-8-2-1kg ha-1 of N-P-K-S-Zn-B at final land preparation as basal. The variety BARI mung-6 was used as test crop @ 30 kg ha-1 of seed. Weed sample was collected from 1 m-2 in each plot using quadrate at 40 days after sowing (DAS). Then weed population was collected and dry matter weight was recorded treatment wise. Weeding was done in each plot at 40 DAS after collection of weed samples. Two irrigations were done at 20 DAS and 45 DAS. Imitaf was sprayed (@ 0.5 mL L-1 water) to control thrips at 25 DAS and 40 DAS, respectively. First and second pod harvesting of mungbean was done on 15 May to 28 May 2012. Data on yield contributing characteristics were recorded from randomly selected 5 plants from each plot. Grain yield (kg ha-1) was recorded from whole plot after harvesting. The recorded data were statistically analyzed and mean values were separated by LSD(0.05) (Gomez and Gomez 1984). All types of variable production cost and market price of the crop were computed to find out gross return and benefit cost ratio (BCR). Some weed parameters were computed as follows (Mian 1996).

Absolute Density (AD) = Total number of weeds of all species in a given treatment / Unit area (per meter square)

Ef?iciency of herbicide (EH) = DWC − DWT / DWC x 100

Where, DWC=Dry weight of weed in control treatment and DWT=Dry weight of weed in given treatment.

Source of Information: Journal of Science and Technology 14(June 2016):32-35

Article Link (Online Journal):

Funding Source:

Budget:

Total Budget (Tk.) :

Achievement/Findings:

Three herbicides named Paraxon, Topstar and Panida would be used as pre-emergence for controlling weeds in mungbean field in summer season as a low cost weed control method.

Knowledge Management: Journal