XCV (95) 2011, No. 2
Dr. Robert E. Wagner, Retired President of PPI, Passes Away at Age 90
Nutrient Deficiencies and Toxicities – as Relevant as Ever for Crops
W.M. (Mike) Stewart and William F. Bennett
Nutrient Deficiencies and Toxicities in Crop Plants Book Now Available at Reduced Price
Sulfur Emerges as a Nutritional Issue in Iowa Alfalfa Production
John Sawyer, Brian Lang, and Daniel Barker
Sulfur Fertilization Response in Iowa Corn Production
John Sawyer, Brian Lang, and Daniel Barker
Optimization Principles of Nitrogen Management for Winter Wheat at the Farm Level
V. A. Romanenkov
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
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
Nitrogen Utilization by Western U.S. Cotton
Jeffrey C. Silvertooth, Kevin F. Bronson, E. Randall Norton, and Robert Mikkelsen
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
Fertilizer Use and Human Health
Tom Bruulsema
How Does One pH Compare to Another?
T. Scott Murrell
IPNI Awards Available to Graduate Students and Scientists in 2011
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
A Guide to Identifying and Managing Nutrient Deficiencies in Cereal Crops
Gavin D. Sulewski Becomes Editor at IPNI as Don Armstrong Retires
Looking Back and into the Future
Don L. Armstrong