Biological nitrogen fixation in sole and doubled-up legume cropping systems on the sandy soils of Kasungu, Central Malawi
Keston Oliver Willard Njira1*, Patson Cleopus Nalivata1, George Yobe Kanyama-Phiri2 and Max William Lowole1
1Bunda College of Agriculture, Department of Crop and Soil Sciences, P.O. Box 219, Lilongwe, Malawi.
2Green Revolution Development Programme, O. P. C. P/Bag 301, Lilongwe 3, Malawi.
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