Answers questions related to the enhancement and maintenance of soil fertility.

Measures to improve soils suited to farmers in the third world.

Papers describing deficiency symptom in crops and field vegetables.

Information with regard to soil pH, fertilizers and lime application.

Common fertilizers and their characteristics.

Information on the relationship between the quality of sugarcane and soil fertility.

Information on all aspects of soil fertility and fertilizers.

Gives examples of soil test values and explains their significance.

Online programs that simulate the response of crops to fertilization, crop residue incorporation and consider the effects of time, soil type, cultural practice and weather. Downloads available for researchers.

Essential nutrient for plant growth. Testing for deficiencies and effects on plant growth. Effect on plant diseases.