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Effect of Variety, Date of Planting and Level of Phosphorus on Shoot Dry Matter and Yield of Mungbean

F.M.J. Uddin
Department of Agronomy, Bangladesh Agricultural University, Mymensingh-2202, Bangladesh

M.A.R. Sarkar
Department of Agronomy, Bangladesh Agricultural University, Mymensingh-2202, Bangladesh

A.A. Mamun
Department of Agronomy, Bangladesh Agricultural University, Mymensingh-2202, Bangladesh

Abstract/ Executive Summary:

The experiment was conducted at the Agronomy Field Laboratory, Bangladesh Agricultural University, Mymensingh during September to December 2009 to study the effect of date of planting and level of phosphorus on the shoot dry matter and yield of different varieties of mungbean. The experiment consisted of three mungbean varieties viz. BARIMung-5, BARIMung-6 and BINAMung-6, three planting dates viz. 15 September, 30 September and 15 October and three levels of phosphorus viz. 0, 40, and 80 kg P₂O₅ ha^-1. The experiment was laid out in 3 factor randomized complete block design with three replications. Among the varieties BARIMung-6 produced the highest seed yield (1.10 t ha^-1), which was similar to BARIMung-5. The lowest seed yield (0.99 t ha^-1) was obtained in BINAMung-6. Among the dates of planting, the highest seed yield (1.17 t ha^-1) was obtained on 15 September and the lowest one was obtained on 15 October. The highest seed yield (1.13 t ha^-1) was obtained in 80 kg P₂O₅ ha^-1 followed by 40 kg P₂O₅ ha^-1 and the lowest seed yield (0.98 t ha^-1) was obtained in control (no phosphorus application) treatment. In case of interaction, the variety BARIMung-6 planted on 15 September with 80 kg P₂O₅ ha^-1 was superior in relation to shoot dry matter and seed yield compared to other varieties, which resulted in the highest seed yield. Seed yield of mungbean was found to have a significant positive correlation (r= 0.813) with shoot dry matter. In contrast, the lowest shoot dry matter and seed yield were found in variety BINAMung-6 planted on 15 October with control (no phosphorus application) treatment.

Keywords: Varieties, Date of planting, Level of phosphorus, Shoot dry matter, Yield

Location: Agronomy Field Laboratory, Bangladesh Agricultural University, Mymensingh

Start Date: 00-09-2009

End Date: 00-12-2009

Program Area: Crop-Soil-Water Management

Commodity: Mungbean

Objectives:

1. To find out the effect of variety, date of planting and level of phosphorus on the shoot dry matter and yield of mungbean.

Methodology:

The experiment was conducted at the Agronomic Field Laboratory, Bangladesh Agricultural University, Mymensingh during the period of September to December 2009. The experiment was conducted in 3 factor randomized complete block design with three replications. The unit plot size was 4m x 2.5m. There were 81 plots in the experiment. Initially, the experimental area was divided into three blocks to represent three replications. Each replication contained 27 plots. Twenty seven treatment combinations were randomly assigned in each replication. Block to block and plot to plot distance was 1m and 0.5m respectively. The layout of the experiment was done on 10 September 2009. The land was opened with a power tiller on 1 September 2009. Later on,ploughing and cross ploughing were done with country plough followed by laddering. Weeds, stubble and crop residues were removed. The corners of the field were spaded and large clods were broken. Land preparation was completed on 3 September 2009. Urea and muriate of potash were applied at the rate of 50 and 35 kg ha^-1 respectively, during final land preparation at each planting date as a basal dose. Phosphorus was applied in the form of TSP following the treatment specification of the experiment as basal dose. Mungbean seeds were treated with rhizobium inoculums at the laboratory of BINA. Inoculum was mixed with molasses and then seeds were treated with this mixture early in the morning immediately before planting in the field. The inoculum was mixed at the rate of 3 g kg^-1 of seeds. Seeds were planted on the specified dates at the rate of 45 kg ha^-1 for all varieties viz. BARIMung-5, BARIMung-6 and BINAMung-6 varieties in 30 cm apart rows. In each row plant to plant distance of 10 cm was maintained finally by thinning out of excess plants. Weeding and thinning were done at 20 days after planting of mungbean seeds. First weeding was done at the time of first thinning and second weeding and thinning were done at 35 days after planting of mungbean seeds. No irrigation was applied during the experimental period as there was no symptom of moisture stress.The experimental plots were frequently observed to notice any change in plant character and attack of pests and disease on the crop. The crop was attacked by pod borer which was controlled successfully by applying Diazinon 60 EC @ 1.7 L ha^-1. When 80% of the pods turned brown in colour, the crop was assessed to attain maturity. The data on the shoot dry matter and seed yield of mungbean were collected at 10 days interval starting from 20 days after planting (DAT) up to 60 DAT. The collected data were analyzed statistically using the analysis of variance technique and the differences among the treatment means were adjudged by Duncan’s Multiple Range Test. A correlation study was carried out to find out the relationship between shoot dry matter production and seed yield of mungbean.

Source of Information: J. Agrofor. Environ. 4 (2): 121-124, 2010; ISSN 1995-6983

Article Link (Online Journal):

Funding Source:

Total Budget (Tk.) :

Achievement/Findings:

Phosphorus had a significant effect on shoot matter plant^-1 and seed yield at all sampling dates, except 60 days after planting. The highest shoot dry matter plant^-1 (6.5g) and seed yield (1.13 t ha^-1) were produced from the application of 80 kg P₂O₅ ha^-1.The lowest shoot dry matter plant^-1 and seed yield (0.98 t ha^-1) were found with the control treatment. Plants treated with 40 kg P₂O₅ ha^-1 gave the second highest shoot dry matter plant^-1 and seed yield. Mungbean yield was higher with 60 kg P₂0₅ ha^-1 than with the lower and higher levels of P. The interaction among variety, date of planting and phosphorus level had a significant effect on shoot dry matter plant^-1 at 60 days after planting and seed yield. It was found that the highest shoot dry matter plant^-1 (18.4g) and seed yield (1.33 t ha^-1) were produced by BARIMung-6 in 15 September planting with the application of 80 kg P₂O₅ ha^-1 and the lowest shoot dry matter plant^-1(1.7g) and seed yield were produced by BINAMung-6 in 15 October planting with control treatment.

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