Positions

Overview

  • As dean, responsible for the administration of the college's academic programs, as well as for promoting the research and outreach efforts of the faculty. Oversee day to day operations of the NHAES, including funded research activities and our farms/dairies/greenhouse facilities.
  • Publications

    Academic Article

    Year Title
    2011 Pea green manure management affects organic winter wheat yield and quality in semiarid MontanaCanadian Journal of Plant Science.  91:497-508. 2011
    2008 Ad Hoc Modeling of Root Zone Soil Water with Landsat Imagery and Terrain and Soils Data.Sensors Diversity.  8:314-326. 2008
    2007 Diurnal hysteresis between soil CO2 and soil temperature is controlled by soil water contentGeophysical Research Letters.  34. 2007
    2007 Physical constraints affecting bacterial habitats and activity in unsaturated porous media - a reviewAdvances in Water Resources.  30:1505-1527. 2007
    2006 Advantages in water relations contribute to greater photosynthesis in Centaurea maculosa compared with established grassesInternational Journal of Plant Sciences.  167:269-277. 2006
    2006 A small-scale matric potential sensor based on time domain reflectometrySoil Science Society of America Journal.  70:533-536. 2006
    2006 Multiplexer-luduced interference on TDR measurements of electrical conductivitySoil Science Society of America Journal.  70:1453-1458. 2006
    2005 Evaluation of mass recovery impacts on transport parameters using least-squares optimization and moment analysisSoil Science Society of America Journal.  69:1209-1216. 2005
    2005 Response of malt barley to phosphorus fertilization under drought conditionsJournal of Plant Nutrition.  28:1605-1617. 2005
    2004 Effects of the invasive Forb Centaurea maculosa on grassland carbon and nitrogen pools in Montana, USAEcosystems.  7:686-694. 2004
    2003 A Review of Advances in Dielectric and Electrical Conductivity Measurement in Soils Using Time Domain ReflectometryVadose Zone Journal.  2:444-475. 2003
    2003 Water use and water-use efficiency of the invasive Centaurea maculosa and three native grassesPlant and Soil.  254:371-381. 2003
    2003 Soil physical properties associated with the invasive spotted knapweed and native grasses are similarPlant and Soil.  252:241-249. 2003
    2003 Plant water relations influence carbon gain in a grass occurring along sharp gradients of soil temperatureNew Phytologist.  157:241-250. 2003
    2002 Soil microbial community structure across a thermal gradient following a geothermal heating event.Applied and Environmental Microbiology.  68:6300-6309. 2002
    2002 SHAFT-MOUNTED TIME DOMAIN REFLECTOMETRY PROBE FOR WATER CONTENT AND ELECTRICAL CONDUCTIVITY MEASUREMENTSVadose Zone Journal.  1:316-319. 2002
    2002 A heavy-duty time domain reflectometry soil moisture probe for use in intensive field samplingSoil Science Society of America Journal.  66:396-401. 2002
    2002 Time domain reflectometry measurement principles and applicationsHydrological Processes.  16:141-153. 2002
    2001 Soil water characteristic determination from concurrent water content measurements in reference porous mediaSoil Science Society of America Journal.  65:1659-1666. 2001
    2000 New geometry factors for hydraulic property-based soil solution electrical conductivity modelsWater Resources Research.  36:3383-3387. 2000
    2000 Comment on "On water vapor transport in field soils" by Anthony T. Cahill and Marc B. ParlangeWater Resources Research.  36:3103-3105. 2000
    2000 Improved biomass productivity and water use efficiency under water deficit conditions in transgenic wheat constitutively expressing the barley HVA1 gene.Plant Science.  155:1-9. 2000
    2000 Predicting solute transport using mapping-unit data: Model simulations versus observed data at four field sitesJournal of Environmental Quality.  29:1939-1946. 2000
    1999 A new soil matric potential sensor based on time domain reflectometryWater Resources Research.  35:3399-3407. 1999
    1999 Temperature effects on soil bulk dielectric permittivity measured by time domain reflectometry: A physical model (vol 35, pg 371, 1999)Water Resources Research.  35:2283-2283. 1999
    1999 Temperature effects on soil bulk dielectric permittivity measured by time domain reflectometry: A physical modelWater Resources Research.  35:371-383. 1999
    1999 Temperature effects on soil bulk dielectric permittivity measured by time domain reflectometry: Experimental evidence and hypothesis developmentWater Resources Research.  35:361-369. 1999
    1999 Nitrate concentrations in the root zone estimated using time domain reflectometrySoil Science Society of America Journal.  63:1561-1570. 1999
    1999 Preferential flow through intact soil cores: Effects of matric headSoil Science Society of America Journal.  63:1591-1598. 1999
    1998 Pore water velocity and residence time effects on the degradation of 2,4-D during transportEnvironmental Science & Technology.  32:1308-1315. 1998
    1998 Apparatus for constant-head solute transport and soil water characteristic determinationSoil Science Society of America Journal.  62:110-113. 1998
    1996 A simple index of standard operative temperature for mule deer and cattle in winterJournal of Thermal Biology.  21:345-352. 1996
    1996 GIS-based solute transport modeling applications: Scale effects of soil and climate data inputJournal of Environmental Quality.  25:445-453. 1996
    1996 Input parameter and model resolution effects on predictions of solute transportJournal of Environmental Quality.  25:453-462. 1996
    1996 Observed and simulated solute transport under varying wafer regimes .2. 2,6-Difluorobenzoic acid and dicambaJournal of Environmental Quality.  25:654-661. 1996
    1996 Observed and simulated solute transport under varying water regimes .1. Bromide and pentafluorobenzoic acidJournal of Environmental Quality.  25:646-653. 1996
    1996 Solute transport under transient flow conditions estimated using time domain reflectometrySoil Science Society of America Journal.  60:1297-1305. 1996
    1995 WATER-UPTAKE RESUMPTION FOLLOWING SOIL DROUGHT - A COMPARISON AMONG 4 BARLEY GENOTYPESJournal of Experimental Botany.  46:873-880. 1995
    1995 CORRELATION OF LEAF CHLOROPHYLL READINGS AND STEM NITRATE CONCENTRATIONS IN PEPPERMINTCommunications in Soil Science and Plant Analysis.  26:1481-1490. 1995
    1995 NONEQUILIBRIUM TRANSPORT OF ATRAZINE THROUGH LARGE INTACT SOIL CORESSoil Science Society of America Journal.  59:60-67. 1995
    1994 KINETICS OF SOIL-PLANT NITRATE RELATIONS IN POTATO AND PEPPERMINT - A MODEL FOR DERIVATIVE DIAGNOSISCommunications in Soil Science and Plant Analysis.  25:469-478. 1994
    1994 SOIL-TEMPERATURE LIMITATION TO WATER-USE BY FIELD-GROWN WINTER-WHEATAgronomy Journal Journal of Production Agriculture.  86:974-979. 1994
    1992 SOIL THERMAL REGIME INFLUENCE ON WATER-USE AND YIELD UNDER VARIABLE IRRIGATIONAgronomy Journal Journal of Production Agriculture.  84:529-536. 1992
    1991 HIGH-RESOLUTION MEASUREMENT OF ROOT WATER-UPTAKE USING AUTOMATED TIME-DOMAIN REFLECTOMETRYSoil Science Society of America Journal.  55:928-932. 1991
    1988 1987 REPORT USE OF SALINE WASTE-WATER FROM ELECTRICAL-POWER PLANTS FOR IRRIGATION .1. SOILS, IRRIGATION WATER AND CROP YIELD STUDIES .2. IRRIGATION SEASON WATER-BALANCE ON THE HUNTER AND HUNTINGTON RESEARCH FARMSUTAH AGRICULTURAL EXPERIMENT STATION RESEARCH REPORT.  3-82. 1988
    1987 Soil and plant water relations in a crested wheatgrass pasture: response to spring grazing by cattle.Oecologia.  73:573-578. 1987

    Conference Proceeding

    Year Title
    1998 Soil water and root growthHortscience: A Publication of the American Society for Hortcultural Science. 951-959. 1998
    1998 Monitoring soil water and ionic solute distributions using time-domain reflectometrySoil and Tillage Research Soil Technology. 145-150. 1998
    1993 A SIMPLIFIED WAVE-FORM ANALYSIS APPROACH FOR MONITORING SOLUTE TRANSPORT USING TIME-DOMAIN REFLECTOMETRYSoil Science Society of America Journal. 637-642. 1993

    Education And Training

  • A.A. LiberalArtSciGenStdyHumanities, Butte Community College
  • B.S. Range Management, Humboldt State University
  • M.S. Range Science, Utah State University
  • Ph.D. Soil Science & Biometeorology, Utah State University
  • Full Name

  • Jon Wraith