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Effect of Foliar Application of Zinc and Potassium on Growth and Yield of Mungbean Under Water Stress Conditions

M. Monjurul Alam Mondal, PhD
Principal Scientific Officer
Crop Physiology Division, Bangladesh Institute of Nuclear Agriculture, BAU Campus, Mymensingh-2202, Bangladesh

Abstract/ Executive Summary:

Field experiments was carried out to study the effect of foliar application of zinc and potassium on growth, yield and yield components of mungbean plants grown under water stress conditions. The treatments were: Unstressed (control treatment), (ii) Stressed by skipping one irrigation at vegetative growth stage, (iii) Stressed by skipping one irrigation at flowering growth stage and Stressed by skipping one irrigation at pod formation growth stage. The four foliar application of (i) distilled water (control), (ii) 300 ppm Zn-EDTA and (iii) 2.0% KNO. The results revealed that missing one irrigation at any of the three studied stages significantly reduced all the tested growth parameters, yield and yield components as well as photosynthetic pigments content as compared with unstressed plants (control). However, moisture stress at vegetative stage had the most negative effect on growth parameters. Meanwhile, stress at a pod formation stage produced the least yield and yield components’ values. The present study also indicates that foliar application of Zn, K had a positive effect on growth parameters, yield and yield components.

Keywords: Mungbean, Water stress, Zinc, Potassium, Yield

Location: Research farm, Bangladesh Institute of Nuclear Agriculture, Mymensingh

Start Date: 14-03-2004

End Date: 30-05-2004

Program Area: Crop-Soil-Water Management

Commodity: Mungbean

Objectives:

To evaluate the efficiency of foliar application of zinc and potassium to the harmful effect of water stress on growth and yield of mungbean plants.

Methodology:

Field experiments was carried out at Experimental farm, Bangladesh Institute of Nuclear Agriculture, Mymensingh during March-May 2004 to study the effect of foliar application of Zn and K on growth and yield of mungbean plants grown under water stress conditions. A split-plot design with four replicates was applied. The main plots included the four irrigation treatments of (i) Unstressed (control treatment), (ii) Stressed by skipping one irrigation at vegetative growth stage, (iii) Stressed by skipping one irrigation at flowering growth stage and Stressed by skipping one irrigation at pod formation growth stage. The four foliar application of (i) distilled water (control), (ii) 300 ppm Zn-EDTA and (iii) 2.0% KNO. Foliar application was carried out twice after 30 and 50 days from sowing. To avoid the effect of lateral movement of irrigation water, the plots were separated by borders of 1.5 m in width from all sides. Seeds of Binamung-5 was sown on 15 March. Recommended fertilizers were applied. The other agronomic practice for growing mungbean was followed as recommended. Representative samples were collected from four replicates for each treatment after 75 days from sowing where plant height, leaf area, number of branches, leaves and pods as well as weight of stem, leaves and pods were determined. Proline concentration and photosynthesis was determined in the leaves. At harvest, yield cotributing characters were recorded from 10 plants of each plot. The plot was converted into kg/ha.

Source of Information: Book Chapter by M. Monjurul Alam Mondal. 2012. Source-sink relationship in mungbean. LAMBERT Acadamic Publishing, Humburk, Germany. ISBN 978-3-8484-4690-2. pp. 112-120

Article Link (Online Journal):

Funding Source:

1. Government

Budget:

Total Budget (Tk.) :

Achievement/Findings:

Mungbean plants grown under water stress conditions with K is solutions counteracted the deleterious effects of stress on the yield, especially the stress at early stages of growth and helped stressed plants to grow successfully under these adverse unfavorable conditions. Moreover, applying Zn is very effectively in case of using mungbean plants as forage. However this subject needs more and deeper study for achieving clearer conclusion.

Knowledge Management: Book