- Determining Fertilizer Rates links to publications and safe seed-placed rate calculation App
- Enhanced Efficiency Fertilizers (pdf)
- Fertilizer Calculator form allows you to generate fertilizer recommendations using soil test results
- Fertilizer Economics links related to fertilizer economics
- Fertilizer Facts links to published Fertilizer Fact sheets
- Fertilizer Guidelines for MT crops (pdf)
- 4R Plant Nutrition: A Manual for Improving the Management of Plant Nutrition An International Plant Nutrition Institute publication in support of 4R Nutrient Stewardship. for information about this manual and an order form, please go to http://info.ipni.net/4Rmanual.
- Nutri-Facts are fact sheets written by scientific staff of the International Plant Nutrition Institute (IPNI) that focus on essential plant nutrients and their use.
- Nutrient Stewardship - a website to enhanced understanding, adoption and promotion of 4R nutrient stewardship