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Applicability of phosphate buffer extractable organic nitrogen as an indicator of available nitrogen in the sandy soils of the Sahel zone of Niger, West Africa |
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| Authors: | Kanako SUZUKI Ryoichi MATSUNAGA Keiichi HAYASHI Naruo MATSUMOTO Satoshi TOBITA Kensuke OKADA |
| Institution: | Graduate School of Agricultural and Life Sciences, The University of Tokyo, Tokyo 113-8657,;National Institute of Crop Science, Ibaraki 305-8518,;Japan International Research Center for Agricultural Sciences, Ibaraki 305-8686, and;National Agricultural Research Center, Ibaraki 305-8666, Japan |
| Abstract: | |
| Keywords: | nitrogen uptake pearl millet phosphate buffer extractable organic nitrogen Sahel spectrophotometry |