​​Managing Cotton Fertility

June 2016 | 21 min., 09 sec.
by Tyson B. Raper
The University of Tennessee


​Properly managing cotton fertility is an important step in maximizing the efficiency and productivity of all cotton production systems; mismanagement by either over- or under-applying a given nutrient can result in yield penalties and substantial increases in expenses. This presentation lays the framework for establishing an effective, productive fertility management program- a framework which should benefit all consultants, county agents, growers, and other clientele involved in the cotton industry. Specific topics addressed in this presentation include the importance of managing optimum soil pH, the 4 Rs of nutrient management, and the importance/response, deficiency characteristics, timing/management considerations, and current recommendations for nitrogen, potassium, sulfur and boron.

About the Presenter

Tyson B. RaperTyson B. Raper is the Cotton and Small Grains Specialist for the University of Tennessee. Dr. Raper attended Auburn University for his bachelor’s degree in Agricultural Business and Economics with a Minor in Agronomy and Soils. He later completed his master’s degree with Dr. Jac J. Varco at Mississippi State University studying the potential to remotely detect nitrogen deficiencies in cotton. Dr. Raper completed his doctor of philosophy with Dr. Derrick M. Oosterhuis at the University of Arkansas examining the impact of potassium deficiencies on remotely detecting nitrogen deficiencies in cotton and development of a drought stress index from temporally dense, spatially sparse soil moisture measurements. Currently, Dr. Raper’s research program focuses on increasing fertilizer use efficiencies through alternate placements, the remote detection and amelioration of nutrient stresses, and use of soil moisture to quantify experienced drought stress in variety trials.

Contact Information:
Email: traper@utk.edu 


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