Objectives of this study were to: (1) assess the fertilizer use situation in Zaire; (2) identify obstacles to increased fertilizer use; (3) develop alternatives the GOZ might follow in developing programs and policies for production, distribution, and use of fertilizer on an economically sound basis.

This bulletin is a collection of abstracts on Fertilizer Marketing selected from those appearing in Fertilizer Abstracts between July 1973 and June 1978. A similar collection was made of the material from January 1968 through June 1973, and is available in Bulletin Y-59. Together the two bulletins contain nearly 2000 abstracts and cover the majority of marketing publications over the past 10.5 years.

This report summarizes findings in the agronomic area of fertilizer research from July 1, 1975, through September 30, 1978. Similar 3-year reports were issued in 1957 and at 3-year intervals thereafter.

This Fertilizer Manual was prepared by the International Fertilizer Development Center (IFDC) as a joint project with the United Nations Industrial Development Organi zation (UNIDO). It is designed to replace the UN Fertilizer Manual published in 1967 and intended to be a reference source on fertilizer production technology and economics and fertilizer industry planning for developing countries. The aim of the new manual is to describe in clear, simple language all major fertilizer processes, their requirements, advan tages and disadvantages and to show illustrative examples of economic evaluations. The manual is organized in five parts. Part I deals with the history of fertilizers, world outlook, the role of fertilizers in agriculture, and raw materials and includes a glossary of fertilizer-related terms. Part II covers the production and transportation of ammonia and all important nitrogen fertilizers-liquids and solids. Part III deals with the characteristics of phosphate rock, production of sulfuric and phosphoric acid, and all important phosphate fertilizers, including nitrophosphates and ammonium phosphates. Part IV deals with potash fertilizers-ore mining and refining and chemical manufac ture; compound fertilizers; secondary and micronutrients; controlled-release fertilizers; and physical properties of fertilizers. Part V includes chapters on planning a fertilizer industry, pollution control, the economics of production of major fertilizer products anJ intermediates, and problems facing the world fertilizer industry.