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Robert G. Evans (Bob)

Supervisory Agricultural Engineer

Robert Evans.Robert "Bob" G. Evans

 

ASRU Research Leader and Agricultural Engineer

Phone: 406.433.9496

Fax: 406.433.5038

  


• Education • Current Research • Research Experience • Downloads • Related Web Pages • Publications •

 

 

 

Additional Pages: Research Projects,* Publications*

*Taken from the Agricultural Research Information System (ARIS) database.

 

 

 

 

EDUCATION

 

B.S. Agricultural Engineering

1970

Colorado State University, Ft. Collins, CO

M.S. Civil Engineering

1971

Colorado State University, Ft. Collins, CO

Ph.D. Agricultural Engineering

1981

Colorado State University, Ft. Collins, CO

 

 

CURRENT RESEARCH

 

In January 2001, Dr. Evans assumed the position of Supervisory Agricultural Engineer, Research Leader and Facilities Coordinator of the Agricultural Systems Research Unit. Bob’s research directly addresses three broad, overlapping areas: 1) water conservation and improved on-farm water management; 2) environmental management and quality (with a recent emphasis on precision agriculture technologies); and, 3) multiple uses of irrigation systems and management alternatives to reduce chemical use.

 

 

RESEARCH EXPERIENCE

 

Prior to joining the USDA-ARS, Bob served as the Colorado state extension irrigation specialist located in Ft. Collins, CO in 1976 where he worked on statewide water management issues including on farm water management, scientific irrigation scheduling, groundwater pollution and agricultural salinity problems. In October 1980, he accepted a position at the Irrigated Agriculture Research and Extension Center (IAREC) at Washington State University-Prosser as a research agricultural engineer. He was a tenured professor in the Biological Systems Engineering Department at Washington State University with a 100% research appointment although about 25% of his efforts were in extension and teaching activities. The focus of his research has been on soil/water conservation and improved water quality while enhancing the economic viability of agricultural enterprises. The internationally recognized research has primarily been focused on long-term, multi-disciplinary team research on irrigated farming systems. It emphasizes an integrated systems approach to solving present and future problems facing irrigated agriculture. Most of the research projects are long-term, in-depth interdisciplinary team research efforts from 3 to 10 years in duration. He has been at the forefront of knowledge in his interdisciplinary research in precision agriculture, a set of tools that production agriculture can profitably use to meet the environmental and economic challenges of the next century. He is considered one of the foremost authorities in the world on cold temperature protection of orchard and vineyard crops and has frequent national and international visitors and requests for presentations and workshops in the area.

 

 

INFORMATION TO DOWNLOAD

Art of Protecting Grapevines from Low Temp (PDF; 122 KB)

Center Pivot Irrigation (PDF; 468 KB)

Energy Balance of Apples Under Evaporative Cooling (PDF; 468 KB)

Evaluating Cokriging for Improving Soil Nutrient Sampling Efficiency (PDF; 468 KB)

Frost Protection in Orchards and Vineyards (PDF; 169 KB)

Irrigation Technologies Comparisons (PDF; 116 KB)

Microirrigation (PDF; 84 KB)

Overtree Evaporative Cooling System Design & Operation for Apples in PNW
(PDF; 212 KB)

Application of Polyacrylamides for Soil Erosion Reduction Through Sprinklers
(PDF; 47 KB)

Strip Till Study on Sugar Beets (PDF; 371 KB)

 

 

RELATED WEB PAGES

 

Agricultural Systems Research Unit Projects

 

 

Please note: The most recent publications by this scientist may not yet be listed here. Please check the ARIS "Publications" page for possible new titles.

 

REFEREED JOURNAL ARTICLE (last 10 years) - SENIOR AUTHOR

  • Evans, R.G., Iversen, W.M., and Stevens, W.B. 2006. Strip-Till Research on Beets. The Sugarbeet Grower. 45(2):16-19.

  • Evans, R.G. 2004. Energy Balance of Apples Under Evaporative Cooling. Transactions of American Society of Agricultural Engineers. 47(4):1029-1037.

  • Evans, R.G. Irrigation System Components. Encyclopedia of Agricultural, Food, and Food Engineering. 2003. Dennis R. Heldman, Editor. Marcel Dekker, Inc. 270 Madison Avenue, New York, NY 10016. Pp. 540-542.

  • Evans, R.G., Buckleiter, G.W., Camp, C.R., King, B.A., and Harting, G.B. 2000. Control Systems for Precision Irrigation with Self-Propelled Systems. In: Proceedings 4th Decennial National Irrigation Symposium. Edited by R.G. Evans, B.L. Benham and T.P. Trooien. November 14-16, 2000. American Society of Agricultural Engineers, St. Joseph, MI. (Publication 701P0004). pp. 322-321.

  • Evans, R.G., 2000. The Art of Protecting Vineyards from Cold Temperature Injury. Am. J. Enol. and Vitic. 51(5):60-72.

REFEREED JOURNAL ARTICLE (last 10 years) - COAUTHOR

  • Jabro, J.D., Evans, R.G., Stevens, W.B., Iversen, W.M. 2008. Repeatability of soil apparent electrical conductivity measured by a coulter sensor. Soil Science. 173(1):35-45.

  • Bjorneberg, D.L., C.J. Prestwich and R.G. Evans. 2007. Evaluating the surface irrigation soil loss (SISL) model. Applied Engineering in Agriculture:23(4):485-491.

  • Jabro, J.D., W.B. Stevens, and R.G. Evans. 2006. Spatial Relationships among Soil Physical Properties in Grass-Alfalfa Hay. Soil Science 171:719-727.

  • Lartey, R.T., Lenssen, A.W., Evans, R.G., Ghoshroy, S. 2007. Comparative structural study of leaf spot disease of safflower and sugar beet by cercospora beticola. Plant Pathology Journal. 6(1):37-43.

  • Sainju, U.M., Caesar, T., Lenssen, A.W., Evans, R.G., Kolberg, R.L. 2007. Long-term tillage frequency and cropping intensity effects on dryland residue and soil carbon fractions. Soil Science Society of America Journal. 71(6):1730-1739.

  • Jabro, J.D., and Evans, R.G. 2006. Discrepancies between Analytical Solutions of Two Borehole Permeameters for Estimating Field-Saturated Hydraulic Conductivity. Applied Engineering in Agriculture, 22(4): 549-554. (PDF; 122 KB)

  • Jabro, J.D., Evans, R.G., Kim, Y., Stevens, W.B., Iversen, W.M. 2006. Characterization of spatial variability of soil electrical conductivity and cone index using coulter and penetrometer-type sensors. Soil Science. 171(8):627-637.

  • Jabro, J.D., Stevens, W.B., Evans, R.G. 2006. Spatial relationships among soil physical properties in a grass-alfalfa hay field. Soil Science. 17:719-727.

  • Fereres, E., Evans, R.G. 2005. Irrigation of fruit trees and vines: an introduction. Irrigation Science. 24:55-57.

  • Sadler, E.J., Evans, R.G., Stone, K.C., Camp Jr, C.R. 2005. Opportunities for Conservation with Precision Irrigation. Journal of Soil and Water Conservation. 60(6):371-379.

  • Han, S., Schneider, S.M., Evans, R.G., and Davenport, J.R. 2003. Block Estimating of Spatial Yield Data and Its Uncertainty. Precision Agriculture. 5(1): 73-84. Kluwer Academic Publishers. Dordrecht, The Netherlands.

  • Han, S., Schneider, M., and Evans, R.G. 2003. Evaluating Cokriging for Improving Soil Nutrient Sampling Efficiency. Transactions of ASAE. 46(3):845-849.

  • Redulla, C.A., Davenport, J.R., Evans, R.G., Hattendorf, M.J., Alva, A.K., and Boydston, R.A. 2002. Relating potato yield and quality to variability in soil characteristics. American Journal of Potato Research. 79:317-323.

  • Davenport, J.R., Redulla, C.A., Hattendorf, M.J., Evans, R.G., and Boydston, R.A. 2002. Potato Yield Monitoring on Commercial Fields. HortTechnology. April-June 12(2):289-296.

  • Spayd, S.E., Stevens, R.G., Wample, R.L., Evans, R.G., Edwards, C.G., and Webster, D. 2000. Impact of nitrogen fertilization on vine performance and juice and wine composition of 'Riesling' grapes (Vitis vinifera L.) in Washington State. In: J. V. Possingham and G. H. Neilsen (Eds.) XXV International Horticultural Congress, Part 2: Mineral Nutrition and Grape and Wine Quality. Acta Horticulturae No. 512, pp. 65-75.

  • Sadler, E.J., Evans, R.G., Buchleiter, G.W., King, B.A., and Camp, C.R. 2000. Site-Specific Irrigation - Management and Control. In: Proceedings 4th Decennial National Irrigation Symposium (refereed). Edited by R.G. Evans, B.L. Benham and T.P. Trooien. November 14-16, 2000. American Society of Agricultural Engineers, St. Joseph, MI. (Publication 701P0004). pp. 304-315.

  • Buchleiter, G.W., Camp, C., Evans, R.G., and King, B.A. 2000. Technologies for Variable Water Application with Sprinklers In: Proceedings 4th Decennial National Irrigation Symposium (refereed). Edited by R.G. Evans, B.L. Benham and T.P. Trooien. November 14-16, 2000. American Society of Agricultural Engineers, St. Joseph, MI. (Publication 701P0004). pp.316-321.

  • Felsot, A.S., Evans, R.G., and Tallman, L.C. 2000. Soil Distribution and Plant Uptake of Imidicloprid under Drip and Surface Irrigation. In: Proceedings 4th Decennial National Irrigation Symposium (refereed). Edited by R.G. Evans, B.L. Benham and T.P. Trooien. November 14-16, 2000. American Society of Agricultural Engineers, St. Joseph, MI. (Publication 701P0004). pp. 416-427.

  • Camp, C.R., Lamm, F., Evans, R. G., and Phene, C.J. 2000. Subsurface Drip Irrigation - Past, Present and Future. In: Proceedings 4th Decennial National Irrigation Symposium (refereed). Edited by R.G. Evans, B.L. Benham and T.P. Trooien. November 14-16, 2000. American Society of Agricultural Engineers, St. Joseph, MI. (Publication 701P0004). pp. 363-372.

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