Science

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

Scientific, technical, environmental, economic and safety aspects of the production, marketing, use and application of fertilizers.

Describes the production, distribution and consumption of fertilizers, their intermediates and raw materials

Production and agronomic effectiveness of fertilizers.

Aims to promote and encourage responsible fertilizer use. Contains many fertilizer fact sheets.

Indian Agricultural Resources. Information about manures, organic, inorganic and biofertilizers.

The Ontario Ministry of Agriculture, Food and Rural Affairs offers a large collection of newsletters and factsheets with topics ranging from soil sampling to fertilizer requirements and micronutrients.

Describes the fertilizer requirements of different soil types, with particular reference to Alberta.

Provides general guidance on the purchase, use and timing of nitrogenous fertilizers and on the application of phosphorus, potassium and sulphur.

Fertilizer calculator and fertilizer management tool, providing guidance on fertilizer recipes, cost analysis and fertilizer mixes.

Application recommendations for different fertilizers.

Organization aiming to provide science-based information to help educate people about the benefits of fertilizer. Includes information for consumers, students, teachers and grassroot activists.

A large collection of information ranging from soil test interpretation to prevention of nutrient deficiencies.

Gives examples of soil test values and explains their significance.

RTE is furthering the worldwide movement of remineralizing soils with rock dust and sea minerals to restore soils and forests and to stabilize the climate.

Agricultural use and the environmental impact of fertilizer, lime and soil amendments.