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Directory Sites
Papers describing deficiency symptom in crops and field vegetables.
www.msue.msu.edu
Information with regard to soil pH, fertilizers and lime application.
www.ncw.wsu.edu
Common fertilizers and their characteristics.
www.gov.mb.ca
Sugar Cane Production and Soil Fertility.
Information on the relationship between the quality of sugarcane and soil fertility.
www.cipav.org.co
Answers questions related to the enhancement and maintenance of soil fertility.
www.seafriends.org.nz
Gives examples of soil test values and explains their significance.
www.cahe.nmsu.edu
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.
www.qpais.co.uk
Essential nutrient for plant growth. Testing for deficiencies and effects on plant growth. Effect on plant diseases.
www.ppi-far.org
Information about soil fertility and how it can be improved.
www.dnagardens.com
The International Fertiliser Society
Scientific, technical, environmental, economic and safety aspects of the production, marketing, use and application of fertilizers.
www.fertiliser-society.org
Crop information for all US regions and information on soil fertility and fertilizer application.
www.back-to-basics.net
International Fertilizer Industry Association
Describes the production, distribution and consumption of fertilizers, their intermediates and raw materials
www.fertilizer.org
International Fertilizer Development Center
Production and agronomic effectiveness of fertilizers.
www.ifdc.org
European Network for Field Vegetable Crops
Environmental problems associated with the nitrogen fertilization of field grown vegetables.
www.hri.ac.uk
Fertiliser Manufacturers Research Association
Aims to promote and encourage responsible fertilizer use. Contains many fertilizer fact sheets.
www.fertresearch.org.nz