info:oai:icrisat:5992info:ofi/fmt:xml:xsd:journalMupangwaW TMupangwa, W TTagwiraFTagwira, FGroundnut yield response to single superphosphate, calcitic lime and gypsum on acid granitic sandy soilNutrient Cycling in Agroecosystems1385-1314200573161-1692-3article