Recommended soil testing procedures
Describes important soil tests and explains how to perform and interpret them.
Soil Fertility
A large collection of information ranging from soil test interpretation to prevention of nutrient deficiencies.
Foliar Fertilizer
Introduction to the sources of, and the uses of foliar fertilizer.
How to Apply Fertilizer to Wheat
Application time, forms of fertilizer and methods of application to be considered when applying fertilizer to wheat.
Phosphorus fertilizers
Describes the effective use of this fertilizer. Soil availability, fertilizer characteristics and application.
Understand your soil test: Sulfur
Background information on the role of sulphur in soil fertility, sulphur containing fertilizers and explanation of the results of a soil test.
Soil Characterization
Simple step by step guide to soil sampling and analysis with explanatory images.
Iron Chlorosis
Explains how to detect and combat iron deficiency in plants.
Micronutrient Disorders, HYG-1252-98
On the deficiencies that may occur in soilless floriculture, and how these can be remedied.
Potentially beneficial effects from liming
A university lecture describing the physical and chemical effects of liming on different soil types.
Soil Quality Institute (SQI)
Research findings and practical technologies that help conserve and improve soil conditions. Applicable to farming, ranching, forestry and gardening.
Soils
This site from the Manitoba Agriculture, Food and Rural Initiatives offers advice and information about the management and fertility of soil. Includes erosion, salinity and soil surveys.
Introduction to Soils
Lectures about soil surveys, soil texture, soil acidity and soil fertility. Information about liming, fertilization and soil testing with particular reference to forestry.
Technical Information
A number of bulletins describing soil analysis, soil types and fertiliser application.
Soil Fertility Management
Frequently asked questions about soil fertility, the application of animal wastes, organic and chemical fertilizers. Also features an online discussion forum.
Food and Fertilizer Technology Centre
Technical information and practical experiences about agricultural food production and the use of fertilizers.
Fertilizers, Soil fertility, Plant Nutrition
Information on all aspects of soil fertility and fertilizers.
Plant Nutrition and Soil Fertility Laboratory
Institute of the University in Denmark. Features publications and research reports.
Efficient Fertilizer Use Manual
Comprehensive online book about proper fertilizer uses, soil pH and soil sampling.
Getting Back to Basics
Crop information for all US regions and information on soil fertility and fertilizer application.
Soil test interpretations
Gives examples of soil test values and explains their significance.
The acidity of forest soils
A student paper describing soil conditions in forests. Particularly what causes the pH to change and what influences this will have on the ecosystem.
Soil Fertility for Forage Crops
Gives detailed description of the soil and fertilizer requirements of forage crops during establishment and maintenance. University of Pennsylvania.
Soil Fertility Establishment
Soil fertility management for forage crops. A introduction from the Penn State University's Agronomy Department.
Preplant Soil Nitrate Tests
Description of tests that allow farmers to adjust nitrogen applications to meet the needs of each specific field.
Sugar Cane Production and Soil Fertility.
Information on the relationship between the quality of sugarcane and soil fertility.
What is Soil Fertility
Information about soil fertility and how it can be improved.
European Fertilizer Manufacturers Association
Contains details about plant nutrient requirements, recommendations for fertilizer use and best agricultural practices for fertilizer application.
Fertile Minds
A program by PotashCorp to address misconceptions about fertilizers and the role of the fertilizer industry. Detailed description of fertilzer use and production. Many downloads and a quiz.
The International Fertiliser Society
Scientific, technical, environmental, economic and safety aspects of the production, marketing, use and application of fertilizers.
International Fertilizer Industry Association
Describes the production, distribution and consumption of fertilizers, their intermediates and raw materials
Fertiliser Manufacturers Research Association
Aims to promote and encourage responsible fertilizer use. Contains many fertilizer fact sheets.
Field Museum
Educational site for students and teachers about soil and soil biology.
Fertilizer Industry Federation of Australia
Provides publications and educational material.
Soil Fertility Guide
Soil fertility practices in Manitoba and general fertilizer use considerations. Details about fertilizers, their characteristics, application rates and usage recommendations. N-fixation, Manure and soil factors are also described.
Soil Fertility Guide
Common fertilizers and their characteristics.
European Network for Field Vegetable Crops
Environmental problems associated with the nitrogen fertilization of field grown vegetables.
Soil Conservation and Fertility Management
A detailed description from the International Centre for Integrate Mountain Development. Its main focus is on mountain soils and sloped agriculture in th Hindu-Kish region.
International Fertilizer Development Center
Production and agronomic effectiveness of fertilizers.
Rebuilding Lost Soil Fertility
Measures to improve soils suited to farmers in the third world.
Manures and Fertilizers
Indian Agricultural Resources. Information about manures, organic, inorganic and biofertilizers.
Effects of Organic and Inorganic Fertilizers on Soil Fertility and Crop Quality
Describes the results of a long-term field experiment in Sweden. By Artur Granstedt and Lars Kjellenberg.
Kieserite
Magnesium/sulphur deficiency symptoms are widespread due to inappropriate nutrient management. This website offers not only details about the origin, properties and production of Kieserite, but also a wide range of information concerning its importance and possibilities of use in agriculture.
Fertilizer and Lime Research Center, New Zealand
Agricultural use and the environmental impact of fertilizer, lime and soil amendments.
Soils and Soil Management
Offers a database and search function of a range of articles about fertilizers, micronutrients and fertilizer application.
Fertiliser Deficiencies
Papers describing deficiency symptom in crops and field vegetables.
Secondary and Micronutrients for Vegetables and Field Plants
A series of reports describing the effects of various micronutrients on the growth and health of plants. Pictures of plants with deficiency symptoms.
Soil Fertilizers
Information with regard to soil pH, fertilizers and lime application.
Phosphorus and potassium
Describes the phosphorus (P)and potassium (K) soil testing and fertilizer recommendation system in Ontario, Canada.
Soil fertility and crop nutrition
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 requierements and micronutrients.
Potassium In Agriculture
The influence of potassium on plant nutrition and soil.
Chloride Crop Nutrition
Essential nutrient for plant growth. Testing for deficiencies and effects on plant growth. Effect on plant diseases.
NPK Plant Nutrient Models
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.
Soil Fertility
Application recommendations for different fertilizers.
Soil Fertility
Answers questions related to the enhancement and maintenance of soil fertility.
Introductory Soil Science
Lectures and Laboratory Units of the Soil Sciences Courses at the University of Minnesota. Influences on soil fertility are explained and simple soil tests are described.
Soil Fertility Research
Information about university research with extensive list of publications.
Soil Fertility Implications When Converting to Direct Seeding
Describes the different fertilization requirements for direct seeding.
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