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Bio-fertilizer and Weeding Regimes Effect on Yield and Yield Attributes of Summer Mungbean

J. K. Pramanik
Department of Agronomy, Bangladesh Agricultural University, Mymensingh-2202, Bangladesh

A.K.M.S.H. Chowdhury
Department of Agronomy, Bangladesh Agricultural University, Mymensingh-2202, Bangladesh

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

Abstract/ Executive Summary:

The experiment was conducted at the Agronomy Field Laboratory of Bangladesh Agricultural University, Mymensingh from February to June 2010 to know the effect of bio-fertilizer and weeding on the yield and yield attributes of summer mungbean (cv. Binamoog-7). Treatments were five levels of bio-fertilizer: 0, 1, 2, 3, 4 kg ha^-1and four levels of weeding: no weeding, one weeding, two weeding, and three weeding. Weeding was done by using niri and khurpi. The experiment was laid out in randomized complete block design with three replications. Result of our present study indicated that application of bio-fertilizer up to 2 kg ha^-1increased the number of branches plant^-1, number of pods plant^-1length pod^-1, number of seeds pod^-1, seed weight plant^-1, 1000-seed weight and seed yield of summer mungbean. In case of weeding, the entire yield contributing characters responded linearly with increasing the number of weeding treatment. Among the weeding regimes, the maximum number of branches plant^-1, number of pods plant^-1, length of pod^-1, number of seeds pod^-1, seed weight plant^-1, 1000-seed weight and seed yield were obtained from three times weeding plots. Application of 2 kg bio-fertilizer ha^-1 combination with three times weeding
may be recommended for maximum yield of summer mungbean.

Keywords: Mungbean, Bio-fertilizer, Weeding, Seed yield

Location: Agronomy Field Laboratory of Bangladesh Agricultural University, Mymensingh

Start Date: 00-02-2010

End Date: 00-06-2010

Program Area: Crop-Soil-Water Management

Commodity: Mungbean

Objectives:

To estimate the effect of biofertilizer and weeding regimes on the yield and yield attributes of mungbean.

Methodology:

The experiment was conducted at the Agronomy Field Laboratory of Bangladesh Agricultural University, Mymensingh during February to June 2010. The experiment was laid out in randomized complete block design with three replications. The unit plot size was 5 m². Treatments were five levels of biofertilizer: I₀ = Control (no bio-fertilizer), I₁ = 1.0 kg ha^-1, I₂ = 2.0 kg ha^-1 , I₃ = 3.0 kg ha^-1 and I₄ = 4.0 kg ha^-1 biofertilizer and four weeding regimes: W₀ = No weeding, W₁ = One weeding (15 DAS), W₂ = Two weeding (15 DAS and 30 DAS) and W₃ = Three weeding (15 DAS, 30 DAS and 45 DAS). Summer mungbean variety Binamoog-7 was used as the experimental crop. Liquid broth of BINA-MB mix culture, a mixture of three Bradyrhizobium strains viz., BINA-MB-441, BINA-MB-169 and BINA-MB-301 were used in this experiment, which was collected from the Soil Microbiology Laboratory of Bangladesh Institute of Nuclear Agriculture (BINA), Mymensingh. The experimental plot was opened with a power tiller on 15 February 2010 and subsequently ploughed twice with country plough followed by laddering to achieve a medium tilth required for the crop. The land was finally prepared on 2 March 2010 by country plough followed by laddering. The unit plots were uniformly fertilized with, triple super phosphate and muriate of potash at the rate of 75 and 40 kg ha^-1, respectively, during final land preparation. The other fertilizer like Zn, Boron was not considered at the time of final land preparation but it can be applied. The quantity of seed required for each plot was weighed on the basis of experimental specification and kept in polythene bags. Before sowing, seeds of mungbean were mixed with molasses for adhering to the bio-fertilizer. Then the bio-fertilizer was mixed thoroughly with the seed as per treatments and the seeds were placed in a cool dry place to avoid sticking together. The seeds were sown continuously with 30 cm row spacing and 3cm soil depth in the afternoon of 3 March, 2010. After sowing, the seeds were covered with soil to preserve moisture. Intercultural operations were done as when required. However, there was heavy rainfall on middle April and middle May 2010. The excess water was removed from the field at that time. The crops were harvested from central 2 m² area of each plot for yield data on different dates as they attained maturity. Data on plant height, number of branches plant^-1, pods plant^-1, seeds pod^-1, pod length and seed weight plant^-1 were recorded from ten randomly selected plants. For this ten randomly selected plants were uprooted carefully from each plot. Then crop were bundled and sun dried for two days in threshing floor. Seeds were then separated from the plants by beating the bundles with wooden sticks. The collected seeds were dried in the sun for maintaining 14% moisture level. The dried seeds and stover were cleaned and weighed plot^-1. Seed yield and stover yield together were regarded as biological yield. The biological yield was calculated with the fomulae. Harvest index was calculated with the formula. The collected data were compiled and analyzed statistically using the analysis of variance technique (ANOVA) for each of the characters under study was done by F (variance) ratio. The differences among treatment means were adjudged by Duncan's Multiple Range Test with the help of a computer based package programmed MSTAT-C.

Source of Information: Int. J. Sustain. Crop Prod. 10(1):26-32, 2015

Article Link (Online Journal):

Funding Source:

1. Government

Budget:

Total Budget (Tk.) :

Achievement/Findings:

Yield and yield attributes were significantly influenced by different levels of bio-fertilizer and weeding regimes. The highest seed yield (2.34 t ha^-1) was produced from seed inoculated with bio fertilizer @ 2 kg ha^-1 with three times weeding. Therefore, application of 2 kg bio-fertilizer ha^-1 combination with three times weeding may be recommended for maximum yield of summer mungbean

Knowledge Management: Journal