I completed my BA in biology in 1986 and my MS in rangeland resources in 1988 at Oregon State University. I completed my PhD in range science at Utah State University in 1993.
Research Program: Hydrology
Hydrology and soil conservation in dry-land crop and biofuel production systems.
Current Research Projects:
- Identify the optimal timing for creation of a reduced tillage fallow mulch in the lower precipitation (<350 mm) winter wheat-fallow region and determine if it can be predicted using soil water, temperature, or weather forecasts, and if it is different from the timing farmer already use.
- Predict where early seeding is not necessary from maps of growing degree days following fall precipitation.
- Determine the effect of crop sequences with oil seed crops on overwinter infiltration, rain capture, and soil water storage for spring crops.
- Calibrate and use the SWAT model to determine potential changes in crop productivity, hydrology, and sediment loads resulting from a shift from conventional to diverse cropping systems.
Other Research Interests:
- Biofuel production potential of perennial riparian buffers in agricultural landscapes
Federal conservation programs have the potential to provide conservation services and crops bioenergy, particularly where conservation buffers are installed. I recently completed research evaluating the potential of using conservation buffers as sources of lignocellulosic feedstocks for biofuels. Much of the riparian area formally incorporated into crop production on the Columbia Plateau are has been enrolled in conservation buffer programs. These areas are intrinsically productive, if not specifically for small grain production. The data from this project demonstrates the productivity of perennial species used in conservation buffers and the opportunity to diversify wheat-based cropping systems while providing biomass for energy production and/or forage.
No publications listed for this employee.
|View PDF||Williams, J.D., S.B. Wuest, and D.S. Long. Soil and Water Conservation in the Pacific Northwest Through No-tillage and Intensified Crop Rotations. Journal of Soil and Water Conservation. 69(6): 495-504. 2014.|
|View PDF||Williams, J.D., and S.B. Wuest. Soil Water Dynamics in Continuous Winter Wheat Grown in the Semiarid Pacific Northwest, U.S.A. Soil Science Society of America Journal. 78(2): 571-578. 2014.|
|View PDF||Williams, J.D., McCool, D.K., Reardon, C.L., Douglas, C.L., Jr., Albrecht, S.L., and Rickman, R. W. Root:shoot ratios and belowground biomass distribution for Pacific Northwest dryland crops. Journal of Soil and Water Conservation. 68(5): 349-360. 2013.|
|Williams, J.D., S.B. Wuest, D.S. Long. Soil and water conservation in the Pacific Northwest through no-tillage and intensified crop rotations. Journal Soil & Water Conservation. Accepted 14 December 2013|
|View PDF||Deepak, K., Juneja, A., Hohenschuh, W.E., Williams, J.D., Murthy, G. Chemical composition and bioethanol potential of different plant species found in Pacific Northwest conservation buffers. Journal of Renewable and Sustainable Energy. 4(6). 2012|
|View PDF||Williams, J.D., Long, D.S., Wuest, S.B. Capture of plateau runoff by global positioning system-guided drill seed operation. Journal of Soil and Water Conservation. 66(6): 355-361. 2011.|
|View PDF||Williams, J.D., Hartman, H.M., Spencer, L.M., Loiland, J.O. Plant community development in a dryland CREP in Northeastern Oregon. American Journal of Plant Science. 2(6): 744-752. 2011.|
|View PDF||Juneja, A., Kumar, D., Williams, J.D., Wysocki, D.J., Murthy, G.S. Potential for ethanol production from conservation reserve program lands in Oregon. Journal of Renewable and Sustainable Energy. 3(6). 2011.|
|View PDF||Williams, J.D., Wuest, S.B. Tillage and no-tillage conservation effectiveness in the intermediate precipitation zone of the inland Pacific Northwest, United States. Journal Soil and Water Conservation. 66(4): 242-249. 2011.|
|View PDF||Williams, J.D., Long, D.S. Intensive crop rotation yield and economic performance in minimum tillage and no tillage in Northeastern Oregon. Crop Management 10. DOI 10.1094/cm-2011-0328-01-rs. 2011.|
|View PDF||Williams, J.D., Dun, S., Robertson, D.S., Wu, J.Q., Brooks, E., Flanagan, D.C., McCool, D.K. WEPP simulations of dryland cropping systems in small drainages of northeastern Oregon. Journal of Soil and Water Conservation. 65(1):22-33. 2010|
|View PDF||Williams, J.D., Gollany, H.T., Siemens, M.C., Wuest, S.B., Long, D.S. Comparison of runoff, soil erosion, and winter wheat yields from no-till and inversion tillage production systems in northeastern Oregon. Journal Soil and Water Conservation. 64(1):42-53. 2009.|
|View PDF||Williams, J.D. Soil erosion from dryland winter wheat–fallow in a long-term residue and nutrient management experiment in north-central Oregon. Journal Soil and Water Conservation. 63(2): 53-59. 2008.|
|View PDF||Wuest, S.B., Williams, J.D., Gollany, H.T. Tillage and perennial grass effects on ponded infiltration for seven semi-arid loess soils. Journal of Soil and Water Conservation. 61(4): 218-223. 2006.|
|View PDF||Williams, J.D., Wuest, S.B., Schillinger, W.F., Gollany, H.T. Rotary subsoiling newly planted winter wheat fields to improve infiltration in frozen soil. Soil and Tillage Research. 86 (1): 141-151. 2006.|
|View PDF||Williams, J.D., Kolpin, D.W. Current topics in agricultural hydrology and water quality: introduction. Journal of the American Water Resources Association. 41(2): 243-244. 2005.|
|View PDF||Wuest, S.B., Caesar, T., Wright, S.E., Williams, J.D. Organic matter addition, N, and residue burning effects on infiltration, biological, and physical properties of an intensively tilled silt-loam soil. Soil and Tillage Research 84(1): 154-167. 2005.|
|View PDF||Williams, J.D. Effects of long-term winter wheat, summer fallow residue and nutrient management on field hydrology for a silt loam, north-central Oregon. Soil and Tillage Research. 75(1): 109-119. 2004.|
|Gollany, H.T., Wuest, S.B., Williams, J.D., Schillinger, W.F., Baker, A.A., Robertson, D.A. Subsoiling influence on nutrients in runoff following rainfall simulationIn Proceedings of ASA-SSSA. 2003.|
|View PDF||Williams, J.D., Wilkins, D.E., Douglas, Jr., C.L., and Rickman, R.W. Mow-plow crop residue management influence on soil erosion in north-central Oregon. Soil and Tillage Research 55: 71-78. 2000.|
|View PDF||Williams, J.D., Loiland, J.O., Camara, K.M., and Williams, H.B. North-central Oregon dryland crop riparian conservation project. In Proceedings of American Water Resources Association 2000 Summer Specialty Summer Conference, International Conference on Riparian Ecology and Management in Multi-Land Use Watersheds, 28 - 31 August 2000. Portland, OR. 405-409 pp. 2000.|
|View PDF||Williams, J.D., Dobrowolski, J.P, and West, N.E. Microbiotic crust influence on unsaturated hydraulic conductivity. Arid Soil Research and Rehabilitation 12(2). 145-154. 1999.|
|View PDF||Williams, J.D., Wilkins, D.E., McCool, D.K., Baarstad, L.L., Klepper, B.L., and Papendick, R.I. A new rainfall simulator for use in low–energy rainfall areas. Applied Engineering in Agriculture 14(3): 243–247. 1998.|
|View PDF||Williams, J.D., Dobrowolski, J.P, and West, N.E. Microphytic crust influence on interrill erosion and infiltration capacity. Transactions of the American Society of Agricultural Engineers 38(1): 139-146. 1995.|
|View PDF||Williams, J.D., Dobrowolski, J.P, West, N.E., and Gillette, D.A. Microphytic crust influence on wind erosion. Transactions of the American Society of Agricultural Engineers 38(1): 131-137. 1995.|
|View PDF||Williams, J.D. Microbiotic Crusts: A Review. Prepared for: Interior Columbia Basin Management Project, 112 Poplar Street, Walla Walla WA 99362-1693. USDA–FS/USDI–BLM, Contract No. 43-0E00-4-9141. 56 pp. 1994.|
|View PDF||Williams, J.D., and Buckhouse, J.C. Winter logging and erosion in a ponderosa pine forest in northeastern Oregon. Western Journal of Applied Forestry 8(1): 19-23. 1993.|
|View PDF||Williams, J.D., and Buckhouse, J.C. Surface runoff plot design for use in watershed research. Journal of Range Management. 44(4): 411-412. 1991.|