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Field Performance of Mungbean (vigna Radiata) as Influence by Row Spacing and Number of Weeding

M. A. B. Zaher
Department of Agronomy, Sher-e-Bangla Agricultural University, Sher-e-Bangla Nagar, Dhaka-1207

T. S. Roy
Professor
Department of Agronomy, Sher-e-Bangla Agricultural University, Sher-e-Bangla Nagar, Dhaka-1207

M. A. I. Pulok
Seed Technology Discipline, Sher-e-Bangla Agricultural University, Sher-e-Bangla Nagar, Dhaka-1207.

M. M. Rahman
Department of Agronomy, Sher-e-Bangla Agricultural University, Sher-e-Bangla Nagar, Dhaka-1207

M. O. Ali
Coordinator, PROSHIKA, Proshika Bhaban, I/1 - Ga, Section - 2, Mirpur, Dhaka 1216, Bangladesh.

Abstract/ Executive Summary:

An experiment was conducted at the Agronomy field of Sher-e-Bangla Agricultural University, Dhaka during January to April 2012 to study the effect of intra- row spacing and time of weeding on the performance of mungbean (cv. BARI mung-4). The experiment comprised with two factors viz. Intra-row spacing and Time of weeding. Four row spacing (S₁= 15 cm, S₂= 20 cm, S₃= 25 cm and S₄= 30 cm) and four weeding treatments (W₀= No weeding, W₁= Weeding at 15 days after sowing (DAS), W₂ = Weeding at 15 and 30 days after sowing (DAS), and W₃ = Weeding at 15, 30 and 45 days after sowing (DAS) were used. There were sixteen treatment combinations under the present study. Results showed that the highest plant height (60.26 cm) was achieved by 15 cm row spacing with three times of weeding. The highest number of leaves plant^-1 (11.08) and dry weight plant^-1 (15.63 g) were gained by 30 cm row spacing with three times of weeding. With the treatment combination of 25 cm row spacing with two times of weeding showed very close to the combination of 30 cm row spacing with three times of weeding. Hence, the field performance from 25 cm row spacing with two times of weeding and 30 cm row spacing with three times of weeding were significantly similar; so, from economic point of view, 25 cm row spacing followed by two times of weeding was the best treatment combination.

Keywords: BARI mung-4, Row spacing, Weeding, Field performance.

Location: Agronomy field of Sher-e-Bangla Agricultural University, Dhaka

Start Date: 01-01-2012

End Date: 30-04-2012

Program Area: Crop-Soil-Water Management

Commodity: Mungbean

Objectives:

To examine the effect of intra- row spacing, time of weeding and combined effect of intra- row spacing and time of weeding on the performance of mungbean.

Methodology:

The experiment was conducted at the Agronomy field of Sher-e-Bangla Agricultural University, Dhaka to study the effect of intra- row spacing and time of weeding on the performance of mungbean (cv. BARI mung-4). Geographically the experimental field was located at 23° 77' N latitude and 90° 33' E longitudes at an altitude of 9 m above the mean sea level. The soil belonged to the Agro-ecological Zone - Modhupur Tract (AEZ -28). The land topography was medium high and soil texture was silty clay with pH 6.1. The climate of the locality is subtropical which is characterized by high temperature and heavy rainfall during Kharif season (April-September) and scanty rainfall during Rabi season (October-March) associated with moderately low temperature. BARI mung-4 was used as planting material. The seeds of BARI mung-4 for the experiment were collected from BARI, Joydebpur Gazipur. There were two factors in the experiment namely intra row spacing (i.e. line to line distance) and time of weeding as mentioned Factor-1 (Row spacing: 4) S₁= 15 cm, S₂= 20 cm, S₃= 25 cm, S₄= 30 cm, and Factor-2 (Number of weeding: 4) W₀= No weeding, W₁= 1 weeding at 15 DAS, W₂ = 2 weedings at 15 and 30 DAS and W₃ = 3 weedings at 15, 30 and 45 DAS. The experiment was laid out in a 2 factors randomized complete block design (RCBD) design having 3 replications. There are 16 treatment combinations and 48 unit plots. The unit plot size was 6 m² (3 m × 2 m). The blocks and unit plots were separated by 1.0 m and 0.50 m spacing respectively. Lay out of the experiment was done on 2^nd February 2012. Land preparation was completed on 1st February 2012 and was ready for sowing seeds. Seeds were sown at the rate of 27 kg ha^-1 in the furrow on 3^rd February 2012 and the furrows were covered with the soils soon after seeding. The data were recorded on the following parameters plant height, number of leaves plant^-1 and dry weight plant^-1. The height of the selected plant was measured from the ground level to the tip of the plant at 15, 30, 45, 60 days after sowing (DAS) and at harvest time (70 DAS). Number of leaves per plant was counted from each selected plant sample and then averaged at 15, 30, 45, 60 DAS and at harvest time (70 DAS). Ten plants were collected randomly from each plot at 15, 30, 45, 60 DAS and at harvest (80 DAS). The sample plants were oven dried for 24 hours at 70°C and then dry weight plant-1 was determined. The collected data were compiled and analyzed statistically using the analysis of variance (ANOVA) technique with the help of a computer package program MSTAT-C and the mean differences were adjusted by Least Significance Difference.

Source of Information: BANGLADESH RESEARCH PUBLICATIONS JOURNAL ISSN: 1998-2003, Volume: 10, Issue: 3, Page: 243-248, November - December, 2014 Bangladesh Res. Pub. J. 10(3): 243-248. Retrieve from http://www.bdresearchpublications.com/admin/journal/upload/1410032/1410032.pdf

Article Link (Online Journal):

Funding Source:

Total Budget (Tk.) :

Achievement/Findings:

From the results of the study, it may be concluded that the field performance of mungbean cv. BARI mung-4 was better when sown at 30 cm row spacing followed 3 times of weeding. But with the treatment combination of S₃W₂ showed very close to S₄W₃. So, from economic point of view, 25 cm row spacing followed 2 times of weeding was the best treatment combination.

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