Download the new 2012 Catalog of educational materials from the International Plant Nutrition Institute. The catalog is complete with order forms and instructions on ordering from IPNI.

4R Plant Nutrition: A Manual for Improving the Management of Plant Nutrition
4R Nutrient Stewardship is a new innovative approach for fertilizer best management practices adopted by the world’s fertilizer industry. This approach considers economic, social, and environmental dimensions of nutrient management and is essential to sustainability of agricultural systems. The concept is simple–apply the right source of nutrient, at the right rate, at the right time, and in the right place–but the implementation is knowledge-intensive and site-specific. The 4R Plant Nutrition Manual is a wiro bound, 130 page (8½ x 11 in.) book filled with illustrations, learning modules, and case studies. The manual’s initial release will be as a North American version.
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