info:oai:icrisat:5973info:ofi/fmt:xml:xsd:journalRebafkaF PRebafka, F PHebelAHebel, ABationoABationo, AStahrKStahr, KMarschnerHMarschner, H0378-4290113-124Short- and long-term effects of crop residues and of phosphorus fertilization on pearl millet yield on an acid sandy soil in Niger, West Africa362Field Crops Research1994article