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Yield and Fiscal Benefits of Rhizobium Inoculation Supplemented with Phosphorus (P) and Potassium (K) in Climbing Beans (Phaseolus vulgaris L.) Grown in Northern Tanzania

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DOI: 10.4236/as.2015.68076    3,152 Downloads   3,820 Views   Citations


Both field and green house experiments were intended to investigate and evaluate the outcome of rhizobial inoculation supplemented with P and K on climbing beans production in northern Tanzania. The results obtained indicated that, inoculation using Rhizobium inoculants supplemented with fertilizers significantly (p ≤ 0.001) improved both vegetative and yield parameters of climbing beans varieties compared with control treatment. The economic analysis in rhizobium alone revealed a profit of US$ 2350 compared with control treatment with US$ 1558 profit, which was finally reflected in higher percentage increase over control and higher marginal rate of return (MRR). Thus, the use of Rhizobium inoculants supplemented with P and K increased climbing beans yield and the economic analysis performed based on total revenue and variable costs reflected an improvement in economic well being of a small hold farmer of northern Tanzania.

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Mmbaga, G. , M. Mtei, K. and Ndakidemi, P. (2015) Yield and Fiscal Benefits of Rhizobium Inoculation Supplemented with Phosphorus (P) and Potassium (K) in Climbing Beans (Phaseolus vulgaris L.) Grown in Northern Tanzania. Agricultural Sciences, 6, 783-797. doi: 10.4236/as.2015.68076.

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The authors declare no conflicts of interest.


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