National Cotton Council of America
Beltwide Cotton Conferences
January 8-11, 2008
Gaylord Opryland Resort and Convention Center
Nashville, Tennessee
The Cotton Foundation

Recorded Presentations

Thursday, January 10, 2008 - 4:45 PM

Managing N with Sensors: Some Practical Issues

Peter Scharf1, Luciane F. Oliveira1, Earl D. Vories2, Gene Stevens3, David Dunn3, and K.A. Sudduth2. (1) University of Missouri-Columbia, Plant Sciences Division, 108 Waters Hall, Columbia, MO 65211, (2) USDA-ARS, Delta Center, Box 160, Portageville, MO 63873, (3) University of Missouri, P.O. Box 160, Portageville, MO 63783

Using sensors to diagnose the best in-season N rate for cotton may be able to maximize yield while avoiding negative aspects of N over-application.  To get this system working right in production fields will require addressing some practical questions and obstacles, including:

1) What is the effect of time of day on sensor readings?  How often will high-N areas need to be checked?

2) How do recommendation equations change as the season progresses?  Are different sensors different in this regard?

3) How are high-N reference areas best established?

4) How is success evaluated by the producer?


See more of Cotton Soil Management and Plant Nutrition - Thursday Late Afternoon Session
See more of Cotton Soil Management and Plant Nutrition Conference

See more of The Beltwide Cotton Conferences, Jan. 8-11 2008