Publications /
Modules and Case Studies for the 4R Plant Nutrition Manual
A Publication of the International Plant Nutrition Institute (IPNI)
CHAPTER 8 - SUPPORTING PRACTICES
Case Study 8.1-1 Cropping history influences decisions on soil sampling depth
Submitted by T.L. Jensen, IPNI, Canada, February 2012.
Module 8.3-1 Ion exchange resins assess available phosphorus in Brazilian soils
Submitted by Luís Prochnow, IPNI Brazil, August 2014.
