Dr. Robert E. Wagner, Retired President
of PPI, Passes Away at Age 90
| 3 |
Nutrient Deficiencies and Toxicities – as Relevant as Ever for Crops
W.M. (Mike) Stewart and William F. Bennett | 4 |
Nutrient Deficiencies and Toxicities in Crop Plants Book Now Available at Reduced Price
| 5 |
Sulfur Emerges as a Nutritional Issue in Iowa Alfalfa Production
John Sawyer, Brian Lang, and Daniel Barker | 6 |
Sulfur Fertilization Response in Iowa Corn Production
John Sawyer, Brian Lang, and Daniel Barker | 8 |
NEWS: Crop Nutrient Deficiency Image Collection Now Available from IPNI/New Initiative and Website Increase Awareness of 4R Nutrient Stewardship/Upcoming Events...
| 11 |
Optimization Principles of Nitrogen Management
for Winter Wheat at the Farm Level
V. A. Romanenkov | 12 |
Best Nitrogen Management Practices to Decrease Greenhouse Gas Emissions
Jan Willem van Groenigen, Oene Oenema, Kees Jan van Groenigen, Gerard Velthof,
and Chris van Kessel | 16 |
Nutritional Status of Cocoa in Papua New Guinea
Paul Nelson, Michael Webb, Suzanne Berthelsen, George Curry, David Yinil, Chris Fidelis, Myles Fisher, and Thomas Oberthür | 18 |
Nitrogen Utilization by Western U.S. Cotton
Jeffrey C. Silvertooth, Kevin F. Bronson, E. Randall Norton, and Robert Mikkelsen | 21 |
Crop Yield and Soil Fertility as Influenced by Nutrient Management in Rainfed Inner Mongolia
Yu Duan, De-bao Tuo, Pei-yi Zhao, Huan-chun Li, and Shutian Li | 24 |
Fertilizer Use and Human Health
Tom Bruulsema | 26 |
How Does One pH Compare to Another?
T. Scott Murrell | 27 |
IPNI Awards Available to Graduate Students and Scientists in 2011
| 27 |
Maximizing Productivity and Profit through Site-Specific Nutrient Management in Rice-Based Cropping Systems
V.K. Singh, K. Majumdar, M.P. Singh, Raj Kumar, and B. Gangwar | 28 |
A Guide to Identifying and Managing Nutrient Deficiencies in Cereal Crops
| 30 |
Gavin D. Sulewski Becomes Editor at IPNI as Don Armstrong Retires
| 31 |
Looking Back and into the Future
Don L. Armstrong | 32 |
