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Silvertooth received a Ph.D. in Soil Science (Soil Fertility) at Oklahoma
State University in 1986. He also has a Master's degree in Agronomy,
which he also received from Oklahoma State University. He earned his
Bachelor's degree in Agriculture from Kansas State University. Here
at the University of Arizona, he teaches a course in the Management
of Arid Lands and Salt Affected Soils (SWES Dept.), Crop Science and
Production (PLS Dept.), along with a Soil, Water and Environmental
Sciences modular course and freshman colloquium. His research interests
are directed towards the development of crop production management
strategies (primarily irrigated cotton, cantaloupes, and chilies (green,
red, and jalapenos)) that optimize the soil-plant system agronomically
and economically, with full consideration of the short- and long-term
impact of inputs environmentally. A study of the soil-plant relationships
regarding nutrients essential to cotton, cantaloupes, and chilies
is an important part of the program. Salinity and sodicity management
in agricultural soils is an important part of the program. The overall
goal, by interacting with other programs, is to reduce the level of
inputs such as irrigation water, pesticides, fertilizers, and maintain
profitability and sustainability in both the short- and long-term
agricultural production systems in the desert Southwest. Dr. Silvertooth
has received several awards and recognitions including the Ag-100
Award for Excellence in Agricultural Research and Extension, 1996
and the Arizona Farm Bureau Environmental Protection and Technology
Award, 1995. |
Westerman,
R.L., J.C. Silvertooth, H.J. Barreto, and D.L. Minter. 1984.
Phosphorus and potassium effects on yield and nutrient uptake in arrowleaf
clover. Soil Sci. Soc. of Am. J. 48:1292-1296.
Inskeep, W.P. and J.C. Silvertooth. 1988. Inhibition of hydroxyapatite
precipitation in the presence of fulvic, humic, and tannic acids.
Soil Sci. Soc. Am. J. 52:941-946.
Silvertooth, J.C. and R.L. Westerman. 1988. Digestion of plant
materials for the determination of total N to include nitrate. Agron.
J. 80(5):733-736.
Inskeep, W.P. and J.C. Silvertooth. 1988. Kinetics of hydroxyapatite
precipitation at pH 7.4 and 8.4. Geochim Cosmochim. Acta 52, 1883-1893.
Silvertooth, J.C., J.E. Watson, J.E. Malcuit, and T.A. Doerge.
1991. Solute movement in an irrigated cotton production system. Soil
Sci. Soc. Am. J. 56:548-555.
Watson, T.F. and J.C. Silvertooth. 1992. Seasonal dynamics
of sweetpotato whitefly. Southwest Entomologist Journal 17(2):149-167.
Unruh, B.L., J.C. Silvertooth, and D.M. Hendricks. 1994. Potassium
fertility status of several Sonoran desert soils. Soil Sci. 158(6):435-441.
Sanchez, C.A. and J.C. Silvertooth. 1996. Managing saline and
sodic soils for producing horticultural crops. HortTech 6(2):99-107.
Unruh, B.L. and J.C. Silvertooth. 1996. Comparisons between
an Upland and a Pima cotton cultivar: II. Nutrient uptake and partitioning.
Agron. J. 88:589-595.
Unruh, B.L. and J.C. Silvertooth. 1996. Comparisons between
an Upland and a Pima cotton cultivar: I. Growth and yield. Agron.
J. 88:583-589.
Unruh, B.L. and J.C. Silvertooth. 1997. Date of planting and
irrigation termination effects on yield of Upland and Pima cotton.
J. Prod. Agric. 10(1):74-79.
Steger, A., J.C. Silvertooth, and P.W. Brown. 1998. Upland
cotton growth and yield response timing the initial post-plant irrigation.
Agron. J. 90: 455-461.
Norton, E.R. and J.C. Silvertooth. 1998. Field testing and
validation of modeled soil solute movement in an irrigated cotton
system. Agron. J. 90:623-630.
Silvertooth, J.C., J.C. Navarro, E.R. Norton, and C.A. Sanchez.
2001. Evaluation of a nitrogen-15 microplot design in a furrow irrigated
row crop system. Soil Sci. Soc. Am. J. 65:247-250.
Tronstad, R.., J.C. Silvertooth, and Steve Husman. 2003. Irrigation
termination: an economic analysis of yield, quality, and market factors.
J. Cotton Sci. 7:86-94.
EXTENSION PUBLICATIONS Silvertooth,
J.C. and C.R. Farr. 1990. Management considerations for short
season cotton production in Arizona. University of Arizona, College
of Agriculture, Cooperative Extension Bulletin No. 8823.
Hine, R. and J.C. Silvertooth. 1990. Diseases and production
problems of cotton in Arizona. University of Arizona, College of
Agriculture, Cooperative Extension Bulletin No. 8927.
Silvertooth, J.C. and T.A. Doerge. 1990. Nitrogen management
in Arizona cotton production. University of Arizona, College of
Agriculture, Cooperative Extension Bulletin No. 9024.
Silvertooth, J.C. 1991. Agronomic guidelines for Pima cotton
production in Arizona. University of Arizona, College of Agriculture,
Cooperative Extension Bulletin No. 190038.
Silvertooth, J.C. 1991. Defoliation of Pima cotton. University
of Arizona, College of Agriculture, Cooperative Extension Bulletin
No. 191052.
Ayala, F. and J.C. Silvertooth. 1993. Physiology of cotton
defoliation. University of Arizona, College of Agriculture, Cooperative
Extension Bulletin No. 193010.
Arizona
Cotton Agronomy Series Bulletins, J.C. Silvertooth:
(available through the Arizona Cotton Information Site (ACIS) url
= http://ag.arizona.edu/cotton)
Cotton
Advisory Program. 1991- September 2000. This is weekly, single page
publication developed for 12 distinct locations across the state.
The advisory is developed each week by Paul Brown (Weather Update),
Peter Ellsworth (Insect Update), and myself (Agronomy Update) every
Monday A.M., for 32 weeks from February to September. The advisory
is sent to county Extension offices in cotton producing areas where
it is then sent to local clientele.
Chapters in Scholarly Books
Silvertooth,
J.C. 1991. Fertilizer use in cotton production worldwide. In
W. Wichmann (ed.) International Fertilizer Use Review. International
Fertilizer Industry Association. Paris, France. p. 457-471.
Silvertooth,
J.C., K.L. Edmiston, W.H. McCarty, and D.R. Krieg. 1999. Production
practices. In Cotton (a monograph), C.W. Smith and J.T. Cothren,
Eds. John Wiley & Sons. New York, NY. p. 451-488.
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