Extension Specialist and Research Scientist Biometeorology
Ph.D., Soil Science, 1981, University of Wisconsin, Madison
M.S., Soil Science, 1979, University of Wisconsin, Madison
B.S., Agriculture, 1977, University of Missouri, Columbia
Designed, developed and currently oversee the operation of the Arizona Meteorological Network (AZMET), a near-real time agricultural weather information system. Involved in cooperative, applied research on integrated pest management; crop water requirements and irrigation management; heat stress; and frost protection, emphasizing the integration of near-real time weather data with appropriate models to generate information for use in on-farm management.
Walter, I.A., R.G. Allen, R. Elliott, D. Itenfisu, P. Brown, M.E. Jensen, B. Mecham, T.A. Howell, R. Snyder, S. Eching, T. Spofford, M. Hattendorf, D. Marin, R.H. Cuenca, and J.L. Wright. 2004. ASCE’s Standardized Reference Evapotranspiration Equation. ASCE Tech. Rpt. (In Press).
Brown, P.W. 2004. Standardized Reference Evapotranspiration: A New Procedure For Estimating Reference Evapotranspiration In Arizona. Ext. Bulletin AZ 1324. Arizona Cooperative Extension.
Brown, P.W. 2003. Turfgrass Consumptive Use Values for the Tucson Area. Turf Irrigation Management Series No. 4, Ext. Bulletin AZ1313. Arizona Cooperative Extension.
Brown, Paul W., Charles F. Mancino, Michael H. Young, Thomas L. Thompson,
Peter J. Wierenga, and David M. Kopec. (2001). Penman Monteith Crop Coefficients for Use with Desert Turf Systems.
Crop Science, 41:1197-1206
Brown, P.W., C.F. Mancino, T.L. Thompson,
M.H. Young, P.J. Wierenga, and D.M. Kopec.
2001. Penman Monteith crop coefficients for
desert turf systems. Crop Sci. 41: 1197-1206.
Brown, P.W. 2000. Converting Reference Evapotranspiration into Turf Water Use. Turf Irrigation Management Series No. 2, Ext. Bulletin AZ1195. Arizona Cooperative Extension.
Brown, P.W., J. Gilbert, and D.M. Kopec. 1996. Turfgrass irrigation scheduling using weather based estimates of evapotranspiration for high and low traffic turfs. Final Report to: AZ Dept. Water Resources. Contract No. CA94TU103-00.
Brown, P.W., Machibya, T., Russell, B., 1995. Wind flow patterns at the university of arizona agricultural centers. University of Arizona Technical Bulletin 268, 215pp.
Office: |
429 Shantz Building |
Tucson, AZ 85721 |
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Phone: |
(520) 621-1319 |
Fax: |
(520) 621-1647 |
e-mail: |
|
Website: |
www.ag.arizona.edu/azmet |
Computer Systems Manager
Soil, Water and Environmental Science Dept
Since it's inception in 1986, Bruce has been the System Operator of AZMET. Because AZMET is a near real-time weather data telemetry system, the network must be operational 24 hours a day, 365 days a year. Bruce spends an enormous amount of time, days / nights / weekends / holidays, insuring the continuity and quality of the weather data. The multitude of programs, batch-files, and tele-communications software necessary to control the system and the data processing are the products of his efforts. Finding creative solutions to seemingly impossible problems is Bruce's forte. His persistence and innovation are responsible for the continuing improvements to the AZMET project.
Office: |
Family and Consumer Resourcs, Room 320 |
Tucson, AZ 85721 |
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Phone: |
(520) 621-9742 |
Fax: |
(520) 621-1647 |
e-mail: |
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Website: |
www.ag.arizona.edu/azmet |
Ph.D., Turfgrass Science Breeding, Science and Culture from the University of Nebraska, Lincoln
M.S., Turfgrass Breeding and Pathology, Rutgers University.
Dr. Kopec teaches Golf and Sports Turf Management, Bermudagrass Greens Management, Irrigation Scheduling, and Irrigation Water Quality trough the University of Arizona Cooperative Extension Program. His research interests include weed control, specie and variety adaptation, overseeding and spring transition, new specie development and desert turf management. Dr. Kopec's work has been seen in several publications including Turfgrass Science and the Agronomy Journal.
Pessarakli, M., Marcum, K.B. and Kopec, D.M. 2005. Growth responses
and nitrogen-15 absorption of desert saltgrass (Distichlis spicata L.)
to salinity stress. Journal of Plant Nutrition 28(10):1441-1452.
9SAS Institute, Inc. 1991. SAS/STAT User’s guide. SAS Inst., Inc., Cary,
NC.
Marcum, Kenneth B., Pessarakli M., and Kopec, D. 2005. Relative salinity tolerance of 21 turf-type desert saltgrasses compared to bermudagrass. Journal of Range Management
Pessarakli, M., Marcum, K.B., Kopec, D.M. and Qian, Y.L. 2004. Interactive Effects of Salinity and Primo on the Growth of Kentucky Bluegrass. Turfgrass Landscape and Urban Integrated Pest Management Research Summary 2004. Cooperative Extension, Agricultural Experiment Station, The University of Arizona, Tucson, AZ, U.S. Department of Agriculture, 5 p.
Pessarakli, M. and Kopec, D.M. 2004. Growth responses of
Bermudagrass and Seashore Paspalum to different levels of FerroGrow,
multinutrient fertilizer. Journal of Agriculture, Food and Environment
(JFAE) 2(3& 4):284-286.
Kopec, D., Olsen, M. W., Gilbert, J. J., Bigelow, D. M., and Kohout, M. J. 2004. Cool-season grass response to rapid blight disease. Golf Course Management 72:78-81.
Olsen, M.W., D. M. Bigelow, M. J. Kohout, J. Gilbert and D. Kopec. 2004. Rapid blight: a new disease of cool season turf. Golf Course Management 72 (8):87-91.
Brown, Paul W., Charles F. Mancino, Michael H. Young, Thomas L. Thompson,
Peter J. Wierenga, and David M. Kopec. (2001). Penman Monteith Crop Coefficients for Use with Desert Turf Systems.
Crop Science, 41:1197-1206
Pessarakli, M., Marcum, K.B. and Kopec, D.M. 2001. Growth Responses of Desert Saltgrass under Salt Stress. Turfgrass Landscape and Urban Integrated Pest Management Research Summary 2001. Cooperative Extension, Agricultural Experiment Station, The University of Arizona, Tucson, AZ, U.S. Department of Agriculture, AZ1246 Series P-126, pp. 70-73.
Suarez–Rey, E., C. Y. Choi, P. M. Waller, and D. M. Kopec. 2000. Comparison of subsurface drip irrigation and sprinkler irrigation for bermudagrass turf in Arizona. Trans. ASAE 43(3): 631–640.
Brown, P.W., J. Gilbert, and D.M. Kopec. 1996. Turfgrass irrigation scheduling using weather based estimates of evapotranspiration for high and low traffic turfs. Final Report to: AZ Dept. Water Resources. Contract No. CA94TU103-00.
Brown, P.W., C.F. Mancino, M.H. Young, T.L. Thompson, P.W. Wierenge, and D.M. Kopec. 2001. Penman Monteith Crop Coefficients for Use With Desert Turf Systems. Crop Science. (41) 1197-1206.
Kopec, David M. 1985. Tall Fescue Soil Moisture Depletion, Evapotranspiration and Growth Parameters. Dissertation. The University Of Nebraska, Lincoln, Nebraska
Office: |
Forbes Building, Room 303 |
Tucson, AZ 85721 |
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Phone: |
(520) 318-7142 |
Fax: |
(520) 621-1647 |
e-mail: |
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Website: |
http://turf.arizona.edu/karsten.htm |
Assoicate Professor
Department of Agricultural and Biosystems Engineering
Ph.D., Agricultural Engineering 1992, University of California at Davis
M.S., Agricultural Engineering, 1989, University of California at Davis, Davis
B.S., Agricultural Engineering, 1981, University of California at Davis, Davis
Dr. Waller's research focus includes the development of application and management systems for water and chemical application to soils and plants. Monitoring, evaluating, and controlling soil water content and chemical concentration within agricultural and landscape plant systems is a challenge that requires creative solutions. The entire system as well as interactions with other systems must be considered when designing an application or management system. The engineered solution should include sensors, controls, decision algorithms, and application systems.
Office: |
403 Shantz Building |
Tucson, AZ 85721 |
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Phone: |
(520) 621-2896 |
Fax: |
(520) 621-3963 |
e-mail: |
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Website: |
http://ag.arizona.edu/abe/pwaller.phtml |
Colaizzi PD, Barnes EM, Clarke TR, Choi CY, Waller PM, Haberland J, Kostrzewski M. 2003. Water stress detection under high frequency sprinkler irrigation with water deficit index. Journal of Irrigation and Drainage Engineering 129, 36–42.
Kostrzewski, M., P. Waller, P. Guertin, J. Haberland, P. Colaizzi, E. Barnes, T. Thompson, T. Clarke, E. Riley, and C. Choi. 2003. Ground−based remote sensing of water and nitrogen stress. Transactions of the ASAE 46(1): 29−38.
Colaizzi, P. D., E. M. Barnes, T. R. Clarke, C. Y. Choi, and P. M. Waller. 2002. Estimating soil moisture under low–frequency surface irrigation using the CWSI. ASCE J. Irrigation and Drainage Eng. (in press).
Kostrzewski, M., P. Waller, P. Guertin, J. Haberland, P. Colaizzi, E. Barnes, T. Thompson, T. Clarke, E. Riley, and C. Choi. 2002. Detection of water and nitrogen stress variability with the AgIIS remote sensing system. Trans. ASAE (in press).
Barnes, E., T. Clarke, P. Colaizzi, J. Haberland, M. Kostrzewski, E. Riley, S. Moran, P. Waller, C. Choi, T. Thompson, S. Richards, R. Lascano, and H. Li. 2001. Coincident detection of crop water stress, nitrogen status, and canopy density using ground–based multispectral data. In Proc. 5th International Conf. on Precision Agriculture and Other Resource Management, CD–ROM. P. C. Robert, R. H. Rust, and W. E. Larson, eds. Bloomington, Minn. 16–19 July 2000. Madison, Wisc.: ASA–CSSA–SSSA.
Marouelli, W.A. and P.M. Waller, 1999, Chemigation Drop Generator: Theory and Laboratory Evaluation. TRANS of the ASAE. 42(5): 1289-1301
Marouelli, W.A. and P.M. Waller, 1999, Chemigation Drop Generator: Field Evaluation. TRANS of the ASAE. 42(6): 9 pages.
Yuan, Z., P. M. Waller, and C. Y. Choi, 1998, Effect of Organic Acids on Drip Emitter Clogging and Soil Infiltration. TRANS of the ASAE. 41(6): 1689 - 1695.
Hla, A. K, E. Martin, P.M. Waller, and D.C. Slack. 1997. Heat Unit-Based Crop Coefficient for Grapefruit Trees. Applied Engineering in Agriculture. 13(4): 485-489
Choi, C. Y. and P. M. Waller, 1997, Momentum Transport Mechanism in a Doubly-Layered Channel. American Society of Civil Engineers (ASCE) Journal of Environmental Engineers.
123(8): 792-799.
Choi, C. Y., P. M. Waller, and T. M. Dennehy, 1997, Insect Control with Carbon Dioxide Foam. TRANS of the ASAE. 40(5): 1475-1480.
Waller, P. M., D. J. Hills and W. E. Steinke. 1995. Chemigation application efficiency of oil-based pesticide. TRANS of the ASAE. 38(2): 531-538.
Waller, P. M., and D. J. Hills. 1995. Chemigation pipeline transport model for nonsoluble pesticide: I. theory. TRANS of the ASAE. 38(6): 1699-1710.
Waller, P. M., D. J. Hills and D. K. Giles. 1995. Chemigation pipeline transport model for nonsoluble pesticide: II. numerical and field validation. TRANS of the ASAE. 38(6): 1711-1718.
Waller, P.M. and W.W. Wallender. 1993. Changes in cracking water content, and bulk density of salinized swelling clay field soils. Soil Science. 156(6): 414-423.
Waller, P.M. and W.W. Wallender. 1991. Infiltration in surface irrigated swelling soils. Irrigation and Drainage Systems. 5:249-266.
Hills, D.J., F.K. Nawar and P.M. Waller. 1989. Effects of chemical clogging on drip tape irrigation uniformity. TRANS of the ASAE. 32(4): 1202-1206.
Hills, D.J. and P. M. Waller. 1989. Lateral move chemigation of Lorsban 4-E on field corn. Applied Engineering in Agriculture. 5(4): 534-538.
