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Yield Reduction Assessment of Mungbean Due to Nutrient Management Practices

Dr. M.A. Quddus
SSO
PRSS, BARI, Gazipur

Dr. M. H. Rashid
SSO
PRSS, BARI, Madaripur

A.T.M. Hossain
SO
PRSS, BARI, Madaripur

S. Rafiquzzaman
PSO
PRSS, Madaripur

Dr. M. A. Hossain
PSO
PRSS, BARI, Gazipur

Abstract/ Executive Summary:

Experiment was conducted in Low Ganges River Floodplain Soil at RPRS, Madaripur during kharif I, 2007 to 2009 to find out better nutrient management practice to minimize yield reduction of mungbean. ~~d d~~ RCB design was followed using four treatments viz. T₁= N₁₅P₁₈K₁₀S₅Zn_1.5B_1.0, T₂= N₁₅P₁₈K₉S₅, T₃₌N₂₃P₁₅K₈(Farmer’s traditional practice) and T₄= Control with three replications. The sources of fertilizers were urea, TSP, MoP, zypsum, zinc sulphate, boric acid, respectively. All fertilizers were applied after bed preparation as per treatment. Results showed that the treatment T₁ produced the highest seed yield (2029 kg/ha), (1812 kg/ha) and (1598 kg/ha) during 2007, 2008 and 2009, respectively followed by T₂(1859 kg/ha), (1778 kg/ha) and (1330 kg/ha). Lowest seed yield (956 kg/ha), (942 kg/ha) and (859 kg/ha) produced from control treatment. The trained of yield showed some variation in year. The year of 2007 and 2008 trials were performed better seed yield and yield contributing characters compared to the trial of 2009. The population of whitefly, thrips and stemfly increased in 2009 ultimately the crops suffered high MYMV and CLS disease and yield gradually decreased. On the other hand, due to increase of high temperature and lack of soil moisture as well as drought macro and micronutrients were not properly available. So, optimum plant cannot be established and thus yields are reduced in the trial of 2009. Considering economic analysis, the highest BCR (3.14) was recorded in T₁and lowest BCR (2.70) was in T₃_. Due to add high mungbean biomasses in soil, the fertility status of soil were increased in all the treatment over the initial status, but K was low might be due to more uptakes by crop. Therefore, the management practice N₁₅P₁₈K₁₀S₅Zn_1.5B_1.0 might be considered as suitable for sustaining soil fertility and minimize the mungbean yield reduction.

Keywords: Nutrient management practice, Assessment, Mungbean yield

Location: PRSS, BARI, Madaripur

Start Date: 10-03-2007

End Date: 23-05-2009

Program Area: Crop-Soil-Water Management

Commodity: Mungbean

Objectives:

The objective of the study was to find out the better nutrient management practices which minimize the yield reduction of mungbean.

Methodology:

Experiment was conducted in Low Ganges River Floodplain Soil (AEZ-1 12) at Regional Pulses Research Station (RPRS), Madaripur during kharif I, 2007 to 2009 to find out t he better nutrient management practices which minimized the yield reduction of mungbean. Initially soil samples were collected from 0-15 cm depth of experimental plot for determining nutrients status. The soil pH was 6.9 and the soil organic matter & total N were 1.19% & 0.065%. The available P, S, Mn, Zn and B were 16 µg g^-1, 17 µg g^-1, 3.5 µg g^-1, 1.10 µg g^-1, 0.13 µg g^-1, respectively. The exchangeable K, Ca and Mg were 0.14 meq. 100 g^-1, 12.4 meq. 100 g^-1 and 3.1 meq. 100 g^-1, respectively. . . There were four treatments viz.T₁= Fertilizer dose for high yield goal (N₁₅P₁₈K₁₀S₅Zn_1.5B_1.0), T₂= Fertilizer dose for medium yield goal (N₁₅P₁₈K₉S₅), T₃= Farmer’s traditional practice (N₂₃P₁₅K₈) and T₄= Control. Experiment was laid out in RCBD with three replications. The unit plot size was 4 m x 2.8 m with 40 cm x 10 cm spacing. Seeds (BARI Mung-6) were sown on 10 March, 2007, 09 March, 2008 and 15 March, 2009. The seed rate was 30 kg ha^-1. Fertilizer dose in treatment T₃ was selected based on farmer’s practice. N, P, K, S, Zn and B were supplied from urea, TSP, MoP, gypsum, zinc sulphate and boric acid, respectively. The entire amounts of fertilizers were applied as per treatment after final land and bed preparation. First and second weeding were done at 20 DAS and at 35 DAS. Two sprayed with fungicide (Bavistin 0.02%) at 10 days interval starting 30 DAS. Three sprays were given with insecticide (Karatee 0.2%) at 10 days interval starting 20 DAS for controlling insects. The crop was harvested within 08 May to 20 May, 2007, 06 May to 20 May, 2008 and 12 May to 23 May, 2009. Data on yield contributing characters were recorded from 10 randomly selected plants from each plot. Seed yield (kg ha^-1) was recorded from the whole plot technique. Post harvest soil samples were collected from 0-15 cm depth from the same plots and chemical properties of soil were determined. The data were analyzed statistically by using M STAT package.

Source of Information: Eco-Friendly Agriculture Journal. 2010, 3(10): 464-468: ISSN 1999-7957

Article Link (Online Journal):

Funding Source:

1. Government

Budget: 20000.00 per year

Total Budget (Tk.) : 20000.00 per year

Achievement/Findings:

Output made from three years trial, the treatment T₁=N₁₅P₁₈K₁₀S₅Zn_1.5B_1.0 produced the highest seed yield followed by T₂treatment. Lowest seed yield was produced from control treatment. Considering economic analysis, the highest BCR (3.14) was recorded in T₁and lowest BCR (2.70) was in T₃_. Due to add high mungbean biomasses in soil, the fertility status of soil were increased in all the treatment over initial status, but K was low might be due to more uptakes by crop. Concluded from the results, the fertilizer dose i.e. N₁₅P₁₈K₁₀S₅Zn_1.5B_1.0 was the best management practice for producing maximum yield and enhance soil fertility and profitability in Bangladesh. This also minimized the yield reduction of mungbean.

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