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Efficacy of Herbicides in Controlling Weeds in Mungbean (vigna Radiata L. Wilczek) Field

Shamima Aktar
Pulse Research sub-station, Bangladesh Agricultural Research Institute (BARI), Gazipur-1701 , Bangladesh

M. A. Hossain
Pulse Research sub-station, Bangladesh Agricultural Research Institute (BARI), Gazipur-1701 , Bangladesh

M. R. Amin
On-Farm research Division, Bangladesh Agricultural Research Institute (BARI), Gazipur-1701 , Bangladesh

F. Begum
Oilseed Research Centre, Bangladesh Agricultural Research Institute (BARI), Gazipur-1701 , Bangladesh

A. Begum
Entomology Division, Bangladesh Agricultural Research Institute (BARI), Gazipur-1701 , Bangladesh

Abstract/ Executive Summary:

A field experiment was conducted at the Pulse Research Centre of Bangladesh Agricultural Research Institute, Ishurdi, Pabna during Kharif-II season of 2010 to evaluate the efficacy of five herbicides for controlling weeds associated with mungbean (BARI Mung-6). The five herbicides such were: Paraxon (27.6% WV Paraquat dichloride salt), M-clor 5G (Butaclor), Topstar 40 WP (40% Oxadiargyl), Hammer 24 EC (Carfentrazone ethyl), and Panida 33 EC (Pendimethalin) with one control (no herbicide and also no weeding). Weed was collected species wise during weeding at 40 days after sowing from 1 m² area of each plot and oven dried to estimate weed growth. Among the herbicides, Panida performed the best for reducing the number and dry weight of weeds. The maximum reduction of weed population, the highest weed control efficiency, seed yield (1222 kg ha^-1), and maximum economic benefit were also obtained in the treatment receiving Panida 33 EC @ 2 ml L^-1.

Keywords: Herbicides, Efficacy, Controlling weeds, Mungbean

Location: Pulse Research Centre of Bangladesh Agricultural Research Institute, Ishurdi, Pabna

Start Date: 00-00-2010

End Date: 00-00-2010

Program Area: Crop-Soil-Water Management

Commodity: Chemical weed management

Objectives:

To find out the suitable herbicides for controlling weeds associated with mungbean by pre or post-sowing application and to evaluate the relative efficacy of herbicides on growth, yield and profitability of mungbean.

Methodology:

The field experiment was conducted at research farm of Pulse Research Centre of Bangladesh Agricultural Research Institute, Ishurdi, Pabna during Kharif-II season of 2010. The trial consisted of six herbicides such as T₁= Paraxon (27.6% WV paraquat dichloride salt) @ 2.0 ml L^-1 water, T₂= M-clor 5G (Butaclor) @ 2.5 g L^-1 water, T₃ = Topstar 40 WP (40% Oxadiargyl) @ 1.0 g L^-1 water, T₄ = Hammer 24 EC (Carfentrazone ethyl) @ 1.0 ml L^-1 water, T₅ = Panida 33 EC (Gluphosinate-ammonia) @ 2.0 ml L^-1 water, and T₆ = unweeded control. The experiment was laid out in randomized complete block design with 3 replications. The unit plot size was 5 mx4 m. Seeds were sown on the 26 August, 2010. The variety BARI mung-6 was grown with a fertilizer dose @ 20:40:20 kg ha^-1 of N:P₂O₅:K₂O in the form of urea, single superphosphate, muriate of potash, respectively as basal application during final land preparation. The seeds were sown @ 25 kg ha^-1 in furrows at 30 cm x 10 cm spacing at a depth of 2 to 3 cm below the soil surface. Herbicides were applied in two leaf stage of mungbean as dose mentioned in treatment. Two irrigations were applied, one at immediately after seed sowing and another at flowering stage (35 DAS) of crop. Intercultural operations such Two irrigations were applied, one at immediately after seed sowing and another at flowering stage (35 DAS) of crop. Intercultural operations such as mulching, thinning, applying insecticides were done as and when necessary. Weed samples were taken at 40 DAS from 1 m² area in each plot using quadrate and weed population and dry weights were recorded. The pod of mungbean was harvested twice at 21 October and again at 9 November, 2009, respectively. The crop growth, weed dry weight and weed control efficiency were recorded at 40 days after sowing of the crop. Weed control efficiency (WCE %) and intensity of weed infestation were calculated. Data on yield and yield contributing characters were recorded from five randomly selected plants from each plot and grain yield (kg ha^-1) was recorded from the whole plot. Data were statistically analyzed using MSTAT -C program and the treatment means were compared using LSD at 5% by Duncan's Multiple Range Test (DMRT) according to Gomez and Gomez. All types of variable production cost were recorded to find out the cost and return.Economic analysis with respect to gross margin was calculated to evaluate the profitability of different treatments.

Source of Information: The Agriculturists 13(1): 127-132(2015) ISSN 2304-7321 (Online), ISSN 1729-5211 (Print)

Article Link (Online Journal):

Funding Source:

1. Bangladesh Agricultural Research Council

Budget: 750000

Total Budget (Tk.) :

Achievement/Findings:

Based on the experimental results, it may be concluded that fenugreek yield is associated variety. Among tne three varieties, BARl Methi 2 performed the best. The variety BARl Methi 2 showed superiority in respect of plant height, number of branches plant^-1, total number of pods plant^-1 and number of seeds pod^-1 to other varieties resulting in the highest seed yield of 1497 kg ha^-1. The initial salinity level of above 4 dSm^-1 is very harmful to the germination of the crop. Fenugreek crop may be cultivated under a wide range of saline condition (2-12 dSm^-1) of the soil. BARI Methi 2 offered the highest net return of Tk. 50150 coupled with a benefit cost ratio as high as 3.03 over BARI Methi 1 and the Local Methi.

Knowledge Management: Journal