Utilization of Phosphate Rock in Tropical Soils of Latin America

摘要

The high cost of fertilizers, especially those containing high amounts of phosphorus, is one of the main limiting factors in increasing crop production in tropical Latin America. The direct use of phosphate rock or of some of its low-input altered products would seem to present a logical approach to overcoming this constraint. This paper selectively reviews the literature on soils and phosphorus fertilizer problems in tropical Latin America, identifies objectives for further research, and outlines a research program to meet those objectives. Various charts and graphs and a 51-item bibliography (1943-77) of English, Spanish, and Portuguese language references are also included.