Potassium Soil Stratification

Over the past 30 years tillage practices in the Midwest grain production systems have shifted from intensively tilled systems to minimum and no-till cropping systems.  As a consequence of crop residues remaining at or near the surface, there is increasing stratification of soil nutrients.  Results from recent corn fertility research across six Midwestern states will be presented on pH, P and K soil profile stratification with emphasis on soil potassium.  Nutrient management in light of soil stratification will be discussed.

 
Speaker
6/27 2nd email for session desc (mrs)6/19 emailed request for session desc (mrs)970 217 2572 cell
Soil and Crop Sciences Dept
Fort Collins, CO 80523
(970) 686-5702

Biography:
Robert Miller was born in 1955 at Gretna, Nebraska, and grew up on a grain farm in the east central part of the state. After receiving his B.S. degree in 1978, and MS in 1981 at the University of Nebraska, he was employed by Texas A&M University as Research Technician. In 1988 he earned his Ph.D. degrees at Montana State University in soil fertility and chemistry. From 1988 to 1997, he was with the University of California Davis Cooperative Extension service where he served as extension Soil Specialist and Director of the Division of Agriculture and Natural Resources Diagnostic Laboratory. He joined the faculty of Colorado State University in 1997 as an affiliate Professor in Soils and Crop Sciences, where he was a leader in the development of the North American Proficiency Testing program, which provides proficiency evaluation samples to soil testing laboratories. In 1998 he founded laboratory proficiency programs for golf course root zones, compost and for the US-EPA livestock bio-solids. Dr. Miller conducts lab workshops annually and continues to conduct research into soil analysis and fertility. He founded the Agricultural Laboratory Proficiency Program in 2006 and is widely known for encouraging the improvement of methods of soil sampling, soil test methods and testing.

Files
Date
July 29, 2014 02:00pm
July 29, 2014 04:30pm


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