Applying the right nutrient source, at the right rate, at the right time, in the right place is essential to nutrient stewardship and is the core of the 4Rs. To achieve this goal, a team of experts has created the following learning modules. An essential component of these learning modules is to provide information about the basic components of soil fertility and nutrient best management practices. Topics include an explanation of the key components of plant nutrition in relation to selection of fertilizer best management practices addressing the 4Rs. The modules address the macro- and micronutrients as well as soil sampling and integrated economic and environmental issues relative to nutrient management.
After using these materials, please give us your feedback. We have developed a very brief survey to evaluate and improve these modules. Click Here
The materials inlcuded in these modules were authored by Agustin Pagani, John Sawyer, and Antonio Mallarino; Iowa State University Department of Agronomy. Materials inlcude a chapter and an automated presentation for each topic.
INTRODUCTION TO THE 4RS AND THE EDUCATIONAL MODULES
4R nutrient stewardship for fertilizer best management practices is an approach that considers economic, social, and environmental dimensions of nutrient management and is essential to sustainability of agricultural systems. While the concept is simple, implementation requires knowledge-intensive and site-specific nutrient management. Providing educational materials to stakeholders will help increase the adoption and implementation of the best management practices that are right for crop production systems.
Before diving into the educational modules, take a few minutes to read the introduction to 4Rs to better understand how fertilizer best management practices fit within this framework.
Read the introduction chapter >>