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Survey and Identification of Major Weed Species Associated with Mungbean at Different Aez

M.S.A. Khan
SSO
Agronomy Division, Gazipur

S. Aktar
SO
Agronomy Division, Gazipur

Abstract/ Executive Summary:

A survey study was carried out at Joydebpur, Barisal and Ishurdi areas (AEZ 28, 13 and 11) during kharif-1 season of 2008 to identify the major weed species associated with mungbean under different agro-climatic regions.Variability of weed species was observed in different locations. The maximum weed infestation in mungbean was found at Ishurdi (360/m²). The dominant weed species was Cyperus rotundus (Mutha) with summed dominance ratio (SDR) values ranges of 39 to 67. Echinochloa crusgalli (Shyma), Digitaria sangunalis (Anguli) and Cyperus rotundus were the dominant weeds at Joydebpur with SDR values of 44, 25 and 21. But at Barisal, Digitaria sangunalis, Parapholis strigosa (Chela/Badla) and Hygrophila sp (Bagajoga) were found dominant weeds with higher SDR values.

Keywords: Survey, Major weed species, Mungbean crop , Different AEZ

Location: Joydebpur, Barisal and Ishurdi

Start Date: 00-00-2008

End Date:

Program Area: Knowledge Management

Commodity: Infestation

Objectives:

To identify the major weed species associated with mungbean under different agro-ecological zones of Bangladesh.

Methodology:

The weeds survey studies were carried out during Kharif-1 season of 2008 at Gazipur,Ishurdi and Barisal areas of Bangladesh. Selected study locations were Research farms, Farmer’s fields at Muladuli, Dashuria and Mirkamari in Ishurdi and Shikarpur, Narayanpur and Chadpasha in Barisal. These locations covered AEZ 28 (Madhupur Tract), AEZ 11 (High Ganges river floodplain) and AEZ 13 (Ganges Tidal floodplain). Land type, cropping patterns, field conditions, weed management practices were recorded in each location. Six to eight farmers’ fields were randomly selected per location. Weed infestations per square meter, kinds of weed species and weed biomass of different species were recorded for each location. Relative density and SDR (Summed Dominance Ratio) of weed species were also calculated after surveyed.

Source of Information: Annual Report, Agronomy Division 2007-2008, BARI

Article Link (Online Journal):

Funding Source:

1. Asian Development Bank

Budget: 20,000/-

Total Budget (Tk.) : 20,000/-

Achievement/Findings:

Wide variation in number and weed species was observed in different locations. Variation appears due to cropping practice, land topography, soil texture and structure and also environment and other factors. Echinochloa crusgalli (Shyma), Digitaria sangunalis (Anguli) and Cyperus rotundus (Mutha) were found dominant at Gazipur. However, Cyperus rotundus (Mutha) was dominant in mungbean field at Ishurdi. But the weed species Digitaria sangunalis, Parapholis strigosa (Chela/Badla) and Hygrophila sp (Bagajoga) were found dominant at Barisal region.

Knowledge Management: Report/Proceedings