Soil Enzymes Activities in Irrigated and Rain-Fed Vertisols of the Semi-Arid Tropics of Sudan
Mubarak A. Abdalla and Uwe Langer
International Journal of Soil Science Volume 4, Number 3, 67-79, 2009
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Reuse of Date Palm by-Products for Efficient Use of Nitrogen Fertilizer
A.A. Al Al-Shaikh, G. Abdel-Nasser and A. Sh. Sallam
International Journal of Soil Science Volume 4, Number 3, 80-92, 2009
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