The International Certified Crop Adviser (ICCA) Program developed the 4R NMS (4R Nutrient Management Specialist) Certification to meet the growing demand for qualified advisers with focused knowledge ...
02 Dec 2015Better Crops: The Fertility of North American Soils: A Preliminary Look at 2015 ResultsThe 2015 soil test summary is the fourth in a series of summaries dating back to 2001, 2005, and 2010. For the first time, trends in relative frequencies in soil test levels are being examined. Prelim ...
02 Dec 2015Better Crops: Phosphorus Management for PotatoesEconomic rates of P fertilization are higher for potatoes than for many other crops due to shallow roots and sparse root hairs.
IPNI's Nutri-Facts series focuses on each essential plant nutrient - presenting key facts concerning their use.
16 Jan 2012On-Farm ResearchWant to do some field trials of your own? This tutorial provides guidance on designing experiments and provides step-by-step instructions for conducting a statistical analysis in Microsoft Excel.
The following materials are provided to help farmers and crop advisers use Microsoft Excel to examine soil test data over time to assess how a fertilization program changes soil test levels. The manua ...
Note: This material is based upon work supported by the Cooperative State Research, Education, and Extension Service (CSREES), U. S. Department of Agriculture, under agreement No. 00-52103-9679 of the ...