Mikko Sillanpää

The project "Micronutrient Assessment at Country Level (GCP/INT/379/FIN)", the results of which are reported in this document, is a direct follow-up to another project called "Trace Element Study (TF/INT/129/FIN)", the results of which were reported in FAO Soils Bulletin No. 48, 1982. Both projects...

Ill Foreword During the last two decades, the increasing use of mineral fertilizers and organic manures of different types has led to impressive yield increases in developing countries. Major emphasis was given to the supply of the main macronutrients, nitrogen, phosphate and potash. For a...

The project "Micronutrient Assessment at Country Level (GCP/INT/379/FIN)", the results of which are reported in this document, is a direct follow-up to another project called "Trace Element Study (TF/INT/129/FIN)", the results of which were reported in FAO Soils Bulletin No. 48, 1982. Both projects...

Ill Foreword During the last two decades, the increasing use of mineral fertilizers and organic manures of different types has led to impressive yield increases in developing countries. Major emphasis was given to the supply of the main macronutrients, nitrogen, phosphate and potash. For a...

Preface This volume is the result of a great deal of effort by many people in many countries — an international example of cooperation. It had its inception in the early 1970s, when preparatory work was underway for a review of trace elements in soils and agriculture, a review that was later...

- 1 - I. iirraoDUCTioii To weet the demand of the rapidly increasing population of the world, «ore and more food and fibre must be produced from each hectare of the world's arable land. Modern cultivation methods, improved varieties, better control of plant diseases, pests and weeds and...