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Journal of Agronomy
Year: 2007  |  Volume: 6  |  Issue: 4  |  Page No.: 576 - 580

An Exploratory Survey of Soybean Production as Influenced by Soil Nutrient Status in Northeastern Nigeria

H.E. Shehu, J.D.Kwari and P.M. Bzugu    

Abstract: A field survey on soybean (Glycine max L. Merr) production trials was conducted in 2004 at Mubi, Northeastern Nigeria. The survey investigated fertilizer requirement and yield variability among small scale farmers. Results revealed that soybean yield was low (993 kg ha-1) while yield variability was extremely high (from less than 400 kg ha-1 to over 1800 kg ha-1). It also showed that available phosphorus in the soil ranged from medium to below critical levels and yields increased significantly at higher P levels. Increase in K values significantly reduced yield of soybean indicating that it is not absolutely a limiting factor. Another factor affecting yield was farmers' experience followed by soil physical and chemical properties and plant population. Therefore with careful soil fertility management and increased farmers enlightment and experience, gross margin greater than Naira 40,000 ha-1 ($US285.71) is feasible.

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