Vol. LXXV (75), No. 2 Spring 1991
Our Cover: Clear water flows from a farm pump near Coolidge, Kansas.
Photo by Dr. Larry S. Murphy
America's Farmers and Ranchers: Partners with the Environment
Ernest Shea
Point Sources vs. Nonpoint Sources of Groundwater Contamination
Richard S. Fawcett
Fertilizer Nitrates Not Causing Problems in North Carolina Groundwater
J.W. Gilliam
Organically Grown Foods Are Not Without Risks
Production Agriculture Featured in New Video from PPI/FAR
Intermountain Meadow Symposium Scheduled July 1-3 in Colorado
Changes in Nutrient Content of Kentucky Streams
G.W. Thomas, K.L. Wells, and G.R. Haszler
Conventional Nitrogen Rates for High-Yielding Corn Not Likely to Affect Groundwater Quality
Sustainable Soil and Nutrient Management (Great Plains)
P.E. Fixen
Food Safety—The Issue in the Future
Philip T. Tybor
Application of Potassium to Tart Cherries through Drip Irrigation (Montana)
Nancy W. Callan and Mai Westcott
Research Notes: Potassium Fertiliza- tion Increases Nitrogen Utilization by Coastal Bermudagrass (Louisiana)
Research Notes: Evaluating the Need for Spring Nitrogen Fertilization on Hard Red Winter Wheat (Colorado)
Soil Sampling: Guidelines for Band-Applied Phosphorus
D.G. Westfall, N.R. Kitchen, and J.L. Havlin
Legumes in Cereal-Based Rotations: Influence on Profitability and Soil Quality (Saskatchewan)
C.A. Campbell, R.P. Zentner, and G.P. Lafond
Information Materials from PPI
A Concerned Industry
J. Fielding Reed