4R
4R Nutrient Stewardship is one of IPNI’s core strategies to support agriculture’s ability to meet the world’s production needs in a sustainable manner. The 4R concept is simple — apply the right source of nutrient, at the right rate, at the right time, and in the right place — but it's implementati
Regional Updates
Drought continues to be a major concern in the SCGP region. The latest drought monitor (Jan. 8, 2013) shows the entire region, with the exception of some areas in Texas, in some degree of drought....
Production Pointers
May 10, 2013 – Phosphorus and potassium on alfalfa. Alfalfa is a high quality forage crop with high yield potential. Phosphorus and K fertility are important factors affecting alfalfa production. When planning alfalfa fertilization programs this season, keep in mind that each ton of alfalfa hay re
Food Security and the Role of Fertilizer in Supporting it
Food Security and the Role of Fertilizer in Supporting it
The final version of a paper entitled Food Security and the Role of Fertilizer in supporting it is now available online through Elsevier's Procedia Engineering. The paper was authored by Dr. Mike Stewart and Dr. Terry Roberts, and the associated presentation was done by Dr. Stewart at SYMPHOS 20
Regional Profile
Southern and Central Great Plains Region, USA The Southern and Central Great Plains Region (SCGPR) is comprised of six states, Colorado, Kansas, Nebraska, New Mexico, Oklahoma, and Texas. The majority of the region’s cropland is rainfed, but there are some significant areas of irrigated agriculture within the geography. The bullets below highlight a few major regional points. Wheat is by far the most important crop in the region as is shown in the area planted for major crops Figure 1.
Regional Director
Mike Stewart
Southern and Central Great Plains Director




