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Effect of Genotype and Density on the Productivity of Mungbean

R.Yeasmin
Department of Agronomy, Bangabandhu Sheikh Mujibur Rahman Agricultural University, Gazipur-1706, Bangladesh

M. A. Karim*
Department of Agronomy, Bangabandhu Sheikh Mujibur Rahman Agricultural University, Gazipur-1706, Bangladesh

M.M. Haque
Department of Agronomy, Bangabandhu Sheikh Mujibur Rahman Agricultural University, Gazipur-1706, Bangladesh

M. A. B. Mia
Department of Crop Botany Bangabandhu Sheikh Mujibur Rahman Agricultural University, Gazipur-1706, Bangladesh

Abstract/ Executive Summary:

An investigation was carried out at the experimental field of the Department of Agronomy, Bangabandhu Sheikh Mujibur Rahman Agricultural University, Gazipur during September to November 2014 to evaluate the productivity of three mungbean genotypes, viz., GK-24 (G1), GK-63 (G2) and BU mug 4 (G3) under four plant spacing (densities) such as i) 15 cm x 10 cm= 66 plants m^-2 (D1), ii) 20 cm x 10 cm= 50 plants m^-2 (D2), iii) 25 cm x 10 cm= 40 plants m^-2 (D3) and iv) 30 cm x 10 cm=33 plants m^-2 (D4). The experiment was conducted in a factorial randomized complete block design with three replications. A wide variation among the genotypes was observed in relation to light transmission, yield, and yield contributing characters. At 30 cm x 10 cm spacing (D4) the highest light transmission ratio (LTR) was observed in G1 genotype (57.92) and the lowest LTR value in G2 genotype (46.92). Among the three genotypes, G1 produced the highest seed yield (1094 kg ha^-1). But highest seed number pod^-1 was found in D2 (11.61) while maximum pods plant^-1 (11.08) was in D4 treatment followed by D3 (10.59). Among the four plant densities, treatment D3 showed the highest 1000-seed weight (50.30 g). The highest seed yield (1114 kg ha^-1) was recorded in the treatment D4. Among the interaction, the highest number of seeds pod^-1 (12.20) was found in the treatment D1G3, though the highest number of pods plant^-1(12.03) was in treatment D4G1 but the1000-seed weight was the highest (51.92 g) in D3G1. The highest seed yield (1230 kg ha^-1) was recorded from treatment D4G1. The result showed that GK 24 genotype performed the best in all respects of yield and yield attributes at 30 cm x 10 cm spacing compared to other treatments.

Keywords: Grain legume, Spacing, Yield, Light interception

Location: At the experimental field of Bangabandhu Sheikh Mujibur Rahman Agricultural University, Gazipur

Start Date: 00-09-2014

End Date: 00-11-2014

Program Area: Crop-Soil-Water Management

Commodity: Mungbean

Objectives:

This study was planned to determine yield performance of three selected mungbean genotypes at different plant densities.

Methodology:

The experiment was carried out at the experimental field of Bangabandhu Sheikh Mujibur Rahman Agricultural University, Gazipur during September to November 2014. The experimental site is located at the centre of Madhupur Tract (24° 09 N latitude and 90° 26' E longitude) having an elevation of 8.2 m from sea level. The soil type of the experimental field belongs to the Shallow Red Brown Terrace type under Salna Series of Madhupur Tract of Agro ecological Zone (AEZ) 28. The experiment was carried out in a factorial RCBD design. The genotypes were: i) GK-24 (G1), ii) GK-63 and iii) BU mug 4. and the density (spacing) were: i) 15 cm x 10 cm= 66 plants m^-2 (D1), ii) 20 cm x 10 cm= 50 plants m^-2 (D2) iii) 25 cm x 10 cm= 40 plants m^-2 (D3), and iv) 30 cm x 10 cm=33 plants m^-2 (D4). The unit plot size was 3m x 1m. At physiological maturity, dry pods were harvested at different days after sowing (DAS) for different genotypes. The harvesting was started from 63 DAS for G2 and continued up to 70 DAS for G3. Data on different morphological parameters including seed yield and yield contributing characters were recorded following standard methods. Light transmission ratio (LTR) was calculated by the following formula-

LTR = l/I₀

Where, I = Light intensity at the bottom of the crop, I₀= Light intensity at the top of crop

Source of Information: Bangladesh Agron. J. 2016, 19(1): 11-17

Article Link (Online Journal):

Funding Source:

Budget:

Total Budget (Tk.) :

Achievement/Findings:

Considering the results of this study it could be concluded that genotype, GK 24 yielded higher than GK 63 and BU mug4, but 30 cm x 10 cm spacing was found the most suitable one among the tested four spacing. Overall, GK 24 genotype performed better in all respects of yield and yield attributes at 30 cm x 10 cm spacing.

Knowledge Management: Journal