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Potassium and Weed Control Methods Affected on Yield of Mungbean

Mohammed Shohrab Hossen Bhuiyan
Department of Agronomy, Sher-e-Bangla Agricultural University, Dhaka

Md. Shahidul Islam
Department of Agronomy, Sher-e-Bangla Agricultural University, Dhaka

Tuhin Suvra Roy
Department of Agronomy, Sher-e-Bangla Agricultural University, Dhaka

Subrota Podder
Department of Agronomy, Sher-e-Bangla Agricultural University, Dhaka

Shah Muhammad Shakhawat Hossain
Department of Agricultural Extension, Khamarbari, Dhaka

Abstract/ Executive Summary:

Mungbean is very promising pulse crop in Bangladesh but imbalance use of fertilizer and inappropriate weed management are the key reason for substantially lower yield of mungbean. Therefore, the experiment was conducted at the research plot of Sher-e-Bangla Agricultural University farm, Dhaka during the period from February, 2017 to June, 2017 to study the effect of potassium levels and weed control methods on the growth and yield of mungbean. The treatment consisted of three potassium level viz. K0= Control (No Potassium), K1= Recommended dose of Potassium (R), K2= 30% increased of R and four weed control methods viz., W0= No weeding (control), W1= One hand weeding at 15 days after sowing (DAS), W2= Two hand weeding at 15 DAS and 30 DAS, W3= One paraxon spray at 15 DAS. The experiment was laid out in a two factors randomized complete block design (RCBD) with three replications. The seeds of BARI mung-6 variety were the test materials. The highest plant height (45.30 cm), number of branch (10.54 cm), number of leaflets (17.00) and dry weight plant-1 (7.30) was observed K2×W2 treatment. The highest plant height (27.90), pod length (9.48 cm), seeds pod-1 (10.22), weight of 1000 seeds (41.75 g), seed yield (1.63 t ha-1), strove yield (2.76 t ha-1), biological yield (4.37 t ha-1) and harvest Index (37.13%) was observed in the 30% increased of recommended dose of Potassium with two hand weeding (K2× W2). The lowest plant height (21.08) was observed control (No Potassium and no weeding) (K0× W0). The results indicated that the plants performed better in respect of seed yield and others yield contributing characters in K2×W2 (30% increased of recommended dose of Potassium with two hand weeding) treatment than the control treatment K0×W0 showed the least performance. Treatment K2×W2 (30% increased of recommended dose of Potassium with two hand weeding) was found to the most suitable combination for the highest yield of mungbean.

Keywords: Mungbean, Potassium, Vigna radiata L. Weed control methods, Yield.

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

Start Date: 00-03-2017

End Date: 00-05-2017

Program Area: Crop-Soil-Water Management

Commodity: Fertilizer, Weed management

Objectives:

The present study was undertaken to study the effect of potassium and weed control method on yield attributes and yields of mungbean.

Methodology:

The experiment was conducted at the Agronomy field of Sher-e-Bangla Agricultural University, Dhaka, during the period of March 2017 to May 2017 to study the effect of potassium levels and weed control methods on the growth and yield of mungbean. (cv. BARI mung-6). 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 AEZ-28. The land topography was medium high and soil texture was silty clay with pH 6.1. BARI mung-6 was used as planting material. It is highly photoinsensetive. One of the main characteristics of this cultivar is synchronization of pod ripening. Average yield of this cultivar is about 1.6-2.0 ton ha^-1. It contains about 21.2% protein and 46.6% carbohydrate. The treatment consisted of three potassium level viz. K0= Control (No Potassium), K1= Recommended dose of Potassium (R), K2= 30% increased of R and four weed control methods viz., W0= No weeding (control), W1= One hand weeding at 15 days after sowing (DAS), W2= Two hand weeding at 15 DAS and 30 DAS, W3= One paraxon spray at 15 DAS. The experiment was laid out in a two factors Split Plot design (RCBD) with three replications. Potassium was used as main plot. There were 12 treatment combinations and 36 unit plots. The unit plot size was 5.52 m² (2.4 m X 2.3 m). The fertilizers were applied as basal dose @ N, P and K as 20, 17 and 20 kg ha^-¹ at final land preparation respectively in all plots and Seeds were sown at the rate of 40 kg ha^-1. Data were collected on pods plant^-1, pod length, seeds pod^-1, 1000 seeds weight, grain yield, stover yield, biological yield and harvest index. The collected data were 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 (LSD) test at 5% level of significance.

Source of Information: Asian Journal of Crop, Soil Science and Plant Nutrition, 01(01), 15-21.

Article Link (Online Journal): https://doi.org/10.18801/ajcsp.010119.03

Funding Source:

Budget:

Total Budget (Tk.) :

Achievement/Findings:

The results in this study indicated that the plants performed better in respect of seed yield and yield contributing characters in K2×W2 (30% increased of recommended dose of potassium with two hand weeding at 15 DAS and 30 DAS) compare to other treatment combinations.

Knowledge Management: Journal