Nutrient recycling and balance in cropping systems
Managing residues and nitrogen in intensive cropping systems. New understanding for efficient recovery by crops.
Author: Gilles Lemaire1, Sylvie Recous2 and Bruno Mary2
Progress in lifting soil fertility in Southern Africa
Author: Stephen R Waddington1, the late Webster D Sakala2 and Mulugetta Mekuria1
Nutrients in Organic Farming – Are there advantages from the exclusive use of organic manures and untreated minerals?
Author: Holger Kirchmann1 and Megan H. Ryan2