Session
Title: Managing Nutrients
Date: Wed Aug 3, 2016
Time: 4:00 PM - 5:20 PM
Moderator: Tom McGraw
Suites of 4R N Management Practices for Improved Production and Environmental Outcomes

The dynamic challenges of achieving increased crop yields, reduced losses of nitrogen (N) to the environment, and improved profitability can be daunting to crop producers. The public is demanding reduced agricultural nutrient impact on water resources (surface and groundwater) and air quality; including lower greenhouse gas and ammonia emissions. Better soil management and soil health are also being advocated; including better indicators of desirable soil biological, chemical, and physical characteristics. Suites of 4R nutrient management practices - in the context of the entire cropping system - can help raise crop N recovery, limit environmental N losses, and foster sustainability. Professionals with precision agriculture tools and information management expertise can be at the center of improved 4R N management implementation, and assist farmers in addressing these shared challenges. How much of a difference can we make?

Cliff Snyder (speaker)
Nitrogen Program Director
International Plant Nutrition Institute
P.O. Box 10509
Conway, AR 72033-2440
US
(501) 336-8110
Dr. Cliff Snyder is the Nitrogen Program Director for the International Plant Nutrition Institute (IPNI); and coordinates efforts to address environmental nitrogen challenges. He previously served as Midsouth and Southeast Director for the Potash & Phosphate Institute; and as state Extension Soils Specialist with the University of Arkansas. Cliff is a Fellow in the Soil Science Society of America and the American Society of Agronomy; and is a CCA. He received a Ph.D. in Soil Science and Forestry at North Carolina State University; and a M.S. in Agronomy (soil fertility) and B.S. in Agriculture (soil science) at the University of Arkansas.
Length (approx): 40 min
 
Nitrogen Recommendation Systems

Nitrogen fertilization for corn production is complicated by soil and weather variability, yet such has far-reaching economic and environmental implications. To address this challenge, alternative N management strategies have been explored extensively in recent years by both public and private groups for determining the most consistently-correct N fertilizer rate.  Existing as well as new technologies and decision tools are being employed to obtain and process information that facilitates those strategies. This presentation will present results from side-by-side comparisons of these decision tools for corn production over 8 states in the U.S. Midwest. Such comparison improves understanding of strengths and limitations of different N recommendation tools.

Newell Kitchen (speaker)
Soil Scientist
USDA-Agricultural Research Service
243 Agricultural Engineering Bldg.
Columbia, MO 65211
US
573-882-1135
Newell R. Kitchen is a Soil Scientist with the Cropping Systems and Water Quality Research Unit of the USDA-Agricultural Research Service in Columbia, MO, and an Adjunct Professor with University of Missouri. He is recognized for developing soil management and agronomic solutions to issues associated with within-field soil variability. Research highlights include relating spatially-measured soil sensor data to soil characteristics and crop productivity, producing tools for delineating within-field management zones, and developing strategies for variable-rate N fertilizer application. Kitchen's research is documented in more than 270 technical publications, including 90 journal articles and 9 book chapters.
Length (approx): 40 min