Bradyrhizobium technology: a promising substitute for chemical nitrogen fertilizer in Bangladesh agriculture |
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Authors: | Hoque M S |
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Institution: | (1) Department of Soil Science, Bangladesh Agricultural University, Mymensingh, Bangladesh |
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Abstract: | Nitrogen is the most limiting element in Bangladesh soils and urea is the fertilizer commonly used for supplying it. Bradyrhizobium/Rhizobium inoculant was tried as a source of N nutrition for grain legumes in a number of field experiments. The inoculants markedly increased nodule number, nodule mass, shoot weight and yield of the crops compared to uninoculated control and urea-N treatments. For soybean (Glycine max), inoculation increased yield 113 percent over the control and 49 percent over the urea treament. For groundnut (Arachis hypogaea), the increases were 36 and 11 percent; for lentil (Lens culinaris), 30 and 13 percent; and for mungbean (Vigna radiata), 47 and 7 percent. The local inoculant strains were suitable for dependable inoculant production. The inoculant technology can be used as a promising and cheap substitute of urea for growing food legume crops in Bangladesh. |
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Keywords: | bacteria biological nitrogen fixation Bradyrhizobium inoculant legume nodule nut pulses Rhizobium seed shoot urea |
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