T. Jot Smyth

Department of Soil Science
North Carolina State University
PO Box 7619
Raleigh, North Carolina 27695-7619

Room: 3104
Office Phone: 919.515.2838
Email: jot_smyth@ncsu.edu

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Specialty: Soil Acidity Constraints and Management

Current research interests include cultivar screening for tolerance to high acidity and low available phosphorus, evaluation of alternatives for alleviating constraints to root growth in acid subsoils, and development of diagnostic criteria to identify pH, Al toxicity and or Ca deficiency problems in subsoils. Research projects are conducted in both North Carolina and the humid tropics of Latin America.


Research - Refereed Journals

  • Hashimoto, Y., T.J. Smyth, D.W. Israel and D. Hesterberg. 2010. Lack of soybean root elongation responses to micromolar magnesium additions and fate of root-exuded citrate in acid subsoils. Journal of Plant Nutrition 33:219-239.
  • Hashimoto, Y., T. J. Smyth, D. Hesterberg, and D. W. Israel. 2007. Soybean root growth in relation to ionic composition in magnesium-amended acid subsoils: Implications on root citrate ameliorating aluminum constraints. Soil Science and Plant Nutrition. 53:753-763.
  • Fichtner, E. J., D. L. Hesterberg, T. J. Smyth, and H. D. Shew, H. D. 2005. Differential sensitivity of Phytophthora parasitica var. nicotianae and Thielaviopsis basicola to monomeric Al species. Phytopathology 96:212-220.
  • G. Soto, P. Luna-Orea, M. G. Wagger, T. J. Smyth, and A. Alvarado. 2005. Foliage residue decomposition and nutrient release in peach palm (Bactris gasipaes Kunth) plantations for heart-of-palm production in Costa Rica. Agron. J. 97:1396-1402.
  • Soto, G., P. Luna, M. Wagger, T. Smyth, and A. Alvarado. 2003. Descompsicion de resduos de cosecha y liberacion de nutrimentos en plantaciones de palmito en Costa Rica. Agronimia Costarricense 26(2):43-51.
  • Silva, I.R., T.J. Smyth, N.F. Barros and R.F. Novais. 2002. Physiological aspects of aluminum toxicity and tolerance in plants. Topicos Ci. Solo 2:277-335.
  • Silva, I.R., T.J. Smyth, D.W. Israel, C.D. Raper and T.W. Rufty, 2001. Magnesium ameliorates aluminum rhizotoxicity in soybean by increasing citric acid production and exudation by roots. Plant Cell Phys. 42:546-554.
  • Oliveira, F.H., R.F. Novais, T.J. Smyth, and J.C. Neves. 2000. Aluminum diffusion in Oxisols as influenced by soil water matric potential, pH, lime, gypsum, potassium chloride, and calcium phosphate. Commun. Soil Sci. Plant Anal. 31:2523-2533.
  • Silva, I.R., T.J. Smyth, D.F. Moxley, T.E. Carter, N.S. Allen, and T.W. Rufty. 2000. Aluminum accumulation at nuclei of cells in the root tip. Fluorescence detection using lumogallion and confocal laser scanning microscopy. Plant Phys. 123:543-552.