Tools for in-Field Evaluations of the Nitrogen and Phosphorus Status of Corn
Webinar Details
When:
Oct 2, 2012 3:00 pm US/Eastern
Length: 01:19 (hh:mm)
Advance Registration NOT required.
View now on-demand.
Reviewed for Continued Content Relevance: 08/2016
Presenter(s):
- Tom Morris, Professor, Nutrient Management, University of Connecticut
- Quirine Ketterings, Associate Professor, Nutrient Management, Cornell University
- Doug Beegle, Professor, Agronomy, Pennsylvania State University
- Peter Scharf, Professor, Nutrient Management, University of Missouri
- Jim Camberato, Associate Professor, Agronomy, Purdue University
CEU Credits/Certificate Offered:
- Certificate of Participation
- Conservation Planner (CP) - 1 hour Conservation Planning Credit
Virtual Event Format:
Group Viewing Available:
Watch this webinar to learn about soil and plant tissue tests, sensors, and meters that can be used to improve fertility management in corn production.
Predicting the amount of nitrogen fertilizer to apply to corn is difficult because the soil provides much of the nitrogen taken up by corn and the amount available from the soil varies significantly from year to year and from field to field. The percentage of fertilizer or manure nutrients applied that ends up in a crop can also vary from year to year depending on the amount applied, the timing of application, and weather patterns. This webinar provides case study examples of soil and plant tissue tests currently used to estimate the amount of nitrogen available to corn to improve predictions of the amount of fertilizer nitrogen to apply in various states. Soil tests discussed include the Illinois Soil Nitrogen Test (New York example), the Pre-sidedress Soil Nitrate Test (Pennsylvania example), and the Preplant Nitrate Test used in some states in the semi-arid areas and in Wisconsin. Plant tissue tests discussed include the Corn Stalk Nitrate Test and leaf tissue testing. Crop sensors and chlorophyll meters round out the discussion of methods being used to improve nitrogen management. Improving the management of phosphorus by maintaining field-by-field records of phosphorus soil test values is also discussed.
This webinar is sponsored by the USDA NRCS East and West National Technology Support Centers.
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