Potassium Research


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Personnel

Tyson Brant Raper
Assistant Professor
Cotton and small grain production

 

Video


(2 mentions)

Soil Testing 
If you’re looking for a healthy garden or green grass, it’s good to know the content of your soil. UT Extension offers inexpensive soil tests, and it’s all done in a special lab in Nashville.


 

Recent Publications

Phosphorus and Potassium Fertilizer Rate Verification for Corn-Wheat-Soybean Rotation System in Tennessee Singh, S., X. Yin, H. J. Savoy, L. Schneider, and S. Jagadamma.  2019.  Agronomy Journal, doi: 10.2134/agronj2018.12.0749.

Growth Response, Mineral Nutrition, and Water Utilization of Containergrown-Woody Ornamentals Grown in Biochar-amended Pine Bark Basiri Jahromi, N., F. R. Walker, A. Fulcher, J. Atland, and W. C. Wright.  2018.  HortScience, 53(3):347–353. 2018. [Abstract]

Phosphorus and potassium fertilizer rate verification for the corn-wheat-soybean system in Tennessee.  Singh, S., H. J. Savoy, S. Jagadamma, and X. Yin.  2018.  American Society of Agronomy Southern Regional Branch Annual Meeting, February 4-6, Jacksonville, FL.

The Effect of Environment and Nutrients on Hydroponic Lettuce Yield, Quality, and Phytonutrients Sublett, W. L., T. C. Barickman, and C. E. Sams.  2018.  Horticulturae, Vol. (4):48: 1-15. Special Issue: Abiotic Stress Effects on Performance of Horticultural Crops. [Abstract]

Effect of temperature and potassium on lettuce biomass, quality, and phytonutrient concentrations.  Sublett, W. L., T. C. Barickman, and C. E. Sams.  2018.  HortScience, 53(9):S313.

Effects of elevated temperature and potassium on biomass and quality of dark red ‘Lollo Rosso’ Lettuce. Horticulturea.  Sublett, W. L., T. C. Barickman, and C. E. Sams.  2018.  Horticulturea, (4)11: 1-11. Special Issue: Plant Production in Controlled Environments.

Effects of elevated temperature and potassium on biomass and quality of dark red ‘Lollo Rosso’ Lettuce. Horticulturea.  Sublett, W. L., T. C. Barickman, and C. E. Sams.  2018.  Horticulturae, (4)11: 1-11. Special Issue: Plant Production in Controlled Environments.

Switchgrass Cultivar, Yield, and Nutrient Removal Responses to Harvest Timing Ashworth, A. J., F. L. Allen, J. L. Bacon, C. E. Sams, W. E. Hart, J. F. Grant, P. A. Moore, and D. H. Pote.  2017.  Agronomy Journal, Vol 109(6):1-8. [Abstract]

Nitrogen, Phosphorus, and Potassium Fertilizer effects on Cassava Tuber Yield in the Coastal District of Dondo, Mozambique.  Cuvaca, I. B, N. S. Eash, D. M. Lambert, F. R. Walker, and W. P. Rustrick.  2017.  African Journal of Agricultural Research, African Journal of Agricultural Research, Vol. 12 (42); 3112 – 3119. [Abstract]

Selecting Cotton Yield Response Function to Estimate Profit-Maximizing Potassium Fertilization Rates for Cotton Production in Tennessee Harmon, X., C. Boyer, C. O. Gwathmey, J. A. Larson, and R. K. Roberts.  2017.  Journal of Plant Nutrition, 40,11:1547-1556. [Abstract]

Temporal Frequency of Soil Test Information Effects on Returns to Potassium Fertilization in Cotton Production Harmon, X.L., C. Boyer, D. M. Lambert, and J. A. Larson.  2017.  Journal of Agricultural and Applied Economics, 49,2: 251-272. [Abstract]

Cotton and Potassium: Background and the potential of placement to increase efficiency.  Raper, T. B.  2017.  Crops and Soils.