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United States Department of Agriculture

Agricultural Research Service

Related Topics

Gregory S McMaster (Greg)
Agricultural Systems Research Unit
Research Agronomist

Phone: (970) 492-7340
Fax: (970) 492-7310
Room 2042
USDA-ARS-NPA-ASRU
2150 CENTRE AVE., BLDG. D, STE. 200
FORT COLLINS, CO, 80526

Projects
Spatial Modeling of Agricultural Watersheds: Water and Nutrient Management and Targeted Conservation Effects at Field to Watershed Scales
Appropriated (D)
  Accession Number: 422726
Enhanced System Models and Decision Support Tools to Optimize Water Limited Agriculture
Appropriated (D)
  Accession Number: 425704
Improve and Enhance the Object Modeling System (OMS) for Building New Models and Conservation Tools and Transferring This Technology
Specific Cooperative Agreement (S)
  Accession Number: 425201

Publications (Clicking on the reprint icon Reprint Icon will take you to the publication reprint.)
The Unified Plant Growth Model (UPGM): software framework overview and model application - (Proceedings)
Ascough II, J.C., Mcmaster, G.S., Todd, B.L., Wagner, L.E., Fox, F.A., Edmunds, D.A., Herder, M.C. 2014. The Unified Plant Growth Model (UPGM): software framework overview and model application. Environmental Modeling International Conference Proceedings. Available: http://www.iemss.org/sites/iemss2014/papers/iemss2014_submission_352.pdf.
Advances in distributed watershed modeling: a review and application of the AgroEcoSystem-Watershed (AgES-W) model - (Proceedings)
Ascough II, J.C., Green, T.R., David, O., Kipka, H., Mcmaster, G.S., Fink, M., Krause, P., Kralisch, S. 2014. Advances in distributed watershed modeling: a review and application of the AgroEcoSystem-Watershed (AgES-W) model. Environmental Modeling International Conference Proceedings. Available: http://www.iemss.org/sites/iemss2014/papers/iemss2014_submission_351.pdf.
Linking a modified EPIC-based growth model (UPGM) with a component-based watershed model (AGES-W) - (Proceedings)
McMaster, G.S., Ascough II, J.C., Edmunds, D.A., David, O., Wagner, L.E., Fox, F.A., Erskine, R.H., Kipka, H., Green, T.R. 2014. Linking a modified EPIC-based growth model (UPGM) with a component-based watershed model (AGES-W). Environmental Modeling International Conference. June 15-19. 2014, San Diego, California.
Warming and elevated CO2 lead to longer growing season in temperate greassland Reprint Icon - (Peer Reviewed Journal)
Reyes-Fox, M.A., Steltzer, H., Trlica, M., Mcmaster, G.S., Andales, A., Lecain, D.R., Morgan, J.A. 2014. Warming and elevated CO2 lead to longer growing season in temperate greassland. Nature. Vol 510: 259-269.
Simulating unstressed crop development and growth using the Unified Plant Growth Model (UPGM) - (Peer Reviewed Journal)
McMaster, G.S., Ascough II, J.C., Edmunds, D.A., Wagner, L.E., Fox, F.A., DeJonge, K.C., Hansen, N.C. 2014. Simulating unstressed crop development and growth using the Unified Plant Growth Model (UPGM). Environmental Modeling and Assessment. DOI 10.1007/s10666-014-9402-x.
When will my wheat plant flower? - (Experiment Station) - (21-Apr-13)
Simulating crop phenological responses to water stress using the phenology mms software component - (Peer Reviewed Journal)
Mcmaster, G.S., Ascough II, J.C., Edmunds, D.A., Nielsen, D.C., Prasad, P.V. 2013. Simulating crop phenological responses to water stress using the phenology mms software component. Applied Engineering in Agriculture. Vol. 29(2): 233-249.
ArgoEcoSystem-watershed (AgES-W) model evaluation for streamflow and nitrogen/sediment dynamics on a midwest agricultural watershed - (Proceedings)
Ascough II, J.C., David, O., Smith, D.R., Kipka, H., Fink, M., Green, T.R., Krause, P., Mcmaster, G.S., Kralisch, S., Ahuja, L.R. 2012. ArgoEcoSystem-watershed (AgES-W) model evaluation for streamflow and nitrogen/sediment dynamics on a midwest agricultural watershed. In: Seppelt, R., Voinov, A.A., Lange, S., and Bankamp, D. editors,Proceedings of the Sixth Biennial Meetinf or the International Environmental Modeling and Software Society, Managing Resources of a Limited Planet: Pathways and Visions Under Uncertainty, July 1-5, 2012, Leipzig, Germany. p. 2179-2186.
Spatial interrelationships between wheat phenology, thermal time, and terrain attributes - (Peer Reviewed Journal)
Mcmaster, G.S., Green, T.R., Erskine, R.H., Edmunds, D.A., Ascough II, J.C. 2012. Spatial interrelationships between wheat phenology, thermal time, and terrain attributes. Agronomy Journal. 104(4):1110-1121.
Uniquely identifying wheat plant structures - (Peer Reviewed Journal)
Moragues, M., Mcmaster, G.S. 2012. Uniquely identifying wheat plant structures. Crop Science. 52:305-308.
Relationships between sunflower plant spacing and yield: Importance of uniformity in spacing - (Peer Reviewed Journal)
Mcmaster, G.S., Buchleiter, G.W., Bausch, W.C. 2012. Relationships between sunflower plant spacing and yield: Importance of uniformity in spacing. Crop Science. 52:309-319.
Crop development related to temperature and photoperiod in temperate cereals - (Book / Chapter)
Moragues, M., Mcmaster, G.S. 2013. Crop development related to temperature and photoperiod in temperate cereals. In: Meyers, R.A. Encyclopedia of Sustainability Science and Technology. Vol. C., Heidelberg, Germany: Springer-Verlag. p. 2540-2558. Available: http://www.springerreference.com/docs/html/chapterbid/226420.html.
Accumulation of late-applied nitrogen and root dynamics during grain filling in irrigated spring wheat - (Peer Reviewed Journal)
Herrera, J.M., Delgado, J.A., Dillon, M., Barbarick, K., Mcmaster, G.S. 2011. Accumulation of late-applied nitrogen and root dynamics during grain filling in irrigated spring wheat. Communications in Soil Science and Plant Analysis. 42:2235-2249.
Phenology MMS: a program to simulate crop phenological responses to water stress - (Peer Reviewed Journal)
Mcmaster, G.S., Edmunds, D.A., Wilhelm, W.W., Nielsen, D.C., Prassad, P.V., Ascough II, J.C. 2011. Phenology MMS: a program to simulate crop phenological responses to water stress. Computers and Electronics in Agriculture. 77(2011):118-125.
Crop Management to Cope with Global Change: A Systems Perspective Aided by Information Technologies - (Book / Chapter)
McMaster, G.S., Ascough II, J.C. 2011. Crop Management to Cope with Global Change: A Systems Perspective Aided by Information Technologies. Centre for Agriculture and Biosciences International. p. 172-190.
Simulating landscape catena effects in no-till dryland agroecosystems using GPFARM - (Peer Reviewed Journal)
Ascough II, J.C., Andales, A.A., Sherrod, L.A., Mcmaster, G.S., Hansen, N.C., DeJonge, K.C., Fathelrahman, E.M., Ahuja, L.R., Peterson, G.A., Hoag, D.L. 2010. Simulating landscape catena effects in no-till dryland agroecosystems using GPFARM. Agricultural Systems. 103(8): 569-584.
The GPFARM DS for agroecosystem sustainability: the past, future, and lessons learned - (Proceedings)
Ascough II, J.C., Mcmaster, G.S., Dunn, G.H., Andales, A.A. 2010. The GPFARM DS for agroecosystem sustainability: the past, future, and lessons learned. In: Swayne, D.A., Yang, W., Voinov, A.A., Rizzoli, A., and Filatova, T., editors. Environmental Modeling International Conference Proceedings. International Modeling and Environmental Software Society, Modelling for Environment's Sake, July 5-8, 2010, Ottawa, Canada. p.2540-2547.
Quantifying Effects Of Water Stress On Sunflowers - (Abstract Only)
Buchleiter, G.W., Bausch, W.C., Mcmaster, G.S. 2010. Quantifying Effects Of Water Stress On Sunflowers. National Sunflower Research Forum Proceedings.
Quantifying Phenotypic Plasticity Using Genetic Information for Simulating Plant Height in Winter Wheat - (Peer Reviewed Journal)
Weiss, A., Baenziger, P.S., Mcmaster, G.S., Wilhelm, W.W., Al-Ajlouni, Z.I. 2009. Quantifying Phenotypic Plasticity Using Genetic Information for Simulating Plant Height in Winter Wheat. Wageningen Journal of Life Sciences. 57:59-64. Available: http://dx.doi.org/10.1016/j.njas.2009.10.001.
Recent advances in crop growth modeling Reprint Icon - (Peer Reviewed Journal)
Weiss, A., Flerchinger, G.N., Mcmaster, G.S., Wang, E., White, J.W., Yin, X., Struik, P.C., Wienk, J.F. 2009. Recent Advances in Crop Growth Modeling, NJAS Wageningen Journal of Life Sciences, 57:3.
Issues of Spatial and Temporal Scale in Modeling the Effects of Field Operatiions on Soil Properties - (Peer Reviewed Journal)
White, J.W., Jones, J.W., Porter, C., Mcmaster, G.S., Sommer, R., 2009. Issues of Spatial and Temporal Scale in Modeling the Effects of Field Operatiions on Soil Properties. Operational Research International Journal (ORIJ). DOI:10.1007/s12351-009-0067-1.
CANON in D(esign): Composing Scales of Plant Canopies From Phytomers to Whole-Plants Using the Composite Design Pattern - (Peer Reviewed Journal)
Mcmaster, G.S., Hargreaves, J.G. 2009. CANON in D(esign): Composing Scales of Plant Canopies From Phytomers to Whole-Plants Using the Composite Design Pattern. Wageningen Journal of Life Sciences. 57:39-51. Available: http://dx.doi.org/10.1016/j.njas2009.07.008.
Space-Time Dynamics of Soil Water and Process Interactions in Semi-Arid Terrain, Colorado, USA Reprint Icon - (Proceedings)
Green, T.R., Erskine, R.H., Murphy, M.R., Ma, L., Ascough II, J.C., Mcmaster, G.S., Dunn, G.H., Ahuja, L.R. 2009. Space-Time Dynamics of Soil Water and Process Interactions in Semi-Arid Terrain, Colorado, USA. International Congress on Modeling and Simulation Proceedings. p. 1851-1857.
Modeling with Limited Data: The Influence of Crop Rotation and Management on Weed Communities and Crop Yield Loss - (Peer Reviewed Journal)
Stephen R. Canner, L. J. Wiles, Robert H. Erskine, Gregory S. McMaster, Gale H. Dunn, and James C. Ascough, II*: Modeling with Limited Data: The Influence of Crop Rotation and Management on Weed Communities and Crop Yield Loss: Weed Science 2009 57:175–186
A Genetic/Heuristic Approach to Simulating Plant Height in Winter Wheat - (Proceedings)
Weiss, A., Baenziger, P.S., Mcmaster, G.S., Wilhelm, W.W., Al-Ajlouni, Z.I. 2008. A Genetic/Heuristic Approach to Simulating Plant Height in Winter Wheat. Symposium Proceedings.
Evaluating Winter Wheat Spatial and Temporal Flowering Variation for Managing Fusarium Head Blight Reprint Icon - (Abstract Only)
Mcmaster, G.S. 2008. Evaluating Winter Wheat Spatial and Temporal Flowering Variation for Managing Fusarium Head Blight. Agronomy Society of America, Crop Science Society of America, Soil Science Society of America Meeting.
Simulating the Influence of Vernalization, Photoperiod, and Optimum Temperature on Wheat Development Rates Reprint Icon - (Peer Reviewed Journal)
Mcmaster, G.S., White, J.W., Hunt, L., Jamieson, P., Dhillon, S., Ortiz-Monastero, J. 2008. Simulating the Influence of Vernalization, Photoperiod, and Optimum Temperature on Wheat Development Rates. Annals Of Botany. 102:561-569.
Development of the Wheat Plant - (Book / Chapter)
Mcmaster, G.S. 2009. Development of the Wheat Plant. In: Carver, B.F., editor. Wheat:: Science & Trade. Blackwell Publishing. p. 31-55.
A Canonical Composition of Phytomers for Buiding Plant Canopies from the Bottom Up: Phytomer Canon in D(evelopment) - (Proceedings)
Hargreaves, J.N., Mcmaster, G.S. 2008. A canonical composition of phytomers for buiding plant canopies from the bottom up: phytomer canon in d(evelopment). Proceedings of 2008 International Symposium of Crop Modeling and Decision Support. April 19-22, 2008, Nanjing, China.
Simulating Winter Wheat Development Response to Temperature: Modifying Molo's Exponential Sine Equation Reprint Icon - (Peer Reviewed Journal)
Li, L., Mcmaster, G.S., Yu, Q., Du, J. 2008. Simulating Winter Wheat Development Response to Temperature: Modifying Molo's Exponential Sine Equation. Computers and Electronics in Agriculture 63 (2008) 274-281.
Interactive effects of elevated CO2, warming, and moisture on timings and rates of plant development in a mixed-grass prairie ecosystem: Enhancing the GPFarm model - (Abstract Only)
Reyes Fox, M.A., Trlica, J.M., Andales, A.A., Mcmaster, G.S., Morgan, J.A., Knapp, A.K. 2008. Interactive effects of elevated CO2, warming, and moisture on timings and rates of plant development in a mixed-grass prairie ecosystem: Enhancing the GPFarm model. In: Ecological Society of America annual meeting, August 2008, Milwaukee, WI. CDROM.
Modelling Wheat Production - (Book / Chapter)
Jamieson, P.D., Asseng, S., Chapman, S.C., Dreccer, M.F., White, J.W., Mcmaster, G.S., Porter, J.R., and Semenov, M.A. (2010). Modelling wheat production. In: World Wheat Book (van Ginkel M., Bonjean A. and Angus W., eds.). Lavoisier, Paris France.
Simulating Crop Phenological Responses to Water Deficits - (Book / Chapter)
Mcmaster, G.S., White, J.W., Weiss, A., Baenziger, P.S., Wilhelm, W.W., Porter, J.W., Jamieson, P.D. 2009. Simulating Crop Phenological Responses to Water Deficits. In: Ahuja, L.R., Reddy, V.R., Anapalli, S.A., and Yu, Q., editors. Modeling the Response of Crops to Limited Water: Recent Advances in Understanding and Modeling Water Stress Effects on Plant Growth Processes. Vol 1 of series: Advances in Agricultural Systems Modeling. Trans-disciplinary Research, Synthesis, and Applications. Madison, WI, ASA-SSA-CSSA. p.277-300.
Agrometeorology and Wheat Production - (Book / Chapter) - (20-Nov-07)
Insect Pests Models and Insecticide Application - (Book / Chapter)
Ascough II, J.C., Fathelrahman, E.M., Mcmaster, G.S. 2008. Insect Pest Models and Insecticide Application. In: Jorgensen, S.E., Faith, B.D. editors. Ecological Models. Vol. (3) Encyclopedia of Ecology., 5 vols. Oxford, Elsevier. p. 1978-1985.
Spatial Variability in Wheat Phenology Across a Landscape - (Abstract Only)
Mcmaster, G.S., Green, T.R., Erskine, R.H., Edmunds, D.A. 2007. Spatial Variability in Wheat Phenology Across a Landscape. American Geophysical Union.
Ecological Models: Agricultural Models - (Book / Chapter)
Ascough II, J.C., Ahuja, L.R., Mcmaster, G.S., Ma, L., Andales, A.A. 2008. Agricultural Models. In: Jorgensen, S.E., Faith, B.D.editors. Ecological Models. Vol. (1) Encyclopedia of Ecology., 5 vols. Oxford, Elsevier. p. 85-95.
A New Weighing Method to Measure Shoot Water Interception - (Peer Reviewed Journal)
Mauch, K.J., Delgado, J.A., Bausch, W.C., Barbarick, K., Mcmaster, G.S. 2008. A new weighing method to measure shoot water interception. Journal of Irrigation and Drainage Engineering 134: 349-355.
Evaluating EPIC-based Harvest Index Approach for Yield Prediction and Response to Soil Water Reprint Icon - (Abstract Only)
Mcmaster, G.S., Ascough Ii, J.C., Andales, A.A., Edmunds, D.A. 2007. Evaluating EPIC-based Harvest Index Approach for Yield Prediction and Response to Soil Water. ASA-CSSA-SSSA Annual Meeting, New Orleans, November 5,2007 (61-7).
Spatial Variability and Scaling of Infiltration on Undulating Agricultural Terrain Reprint Icon - (Abstract Only)
Green, T.R., Ahuja, L.R., Dunn, G.H., Ascough Ii, J.C., Mcmaster, G.S., Ma, L., Erskine, R.H., Salas, J.D., Palic, D.B., Murphy, M.R. 2007. Spatial Variability and Scaling of Infiltration on Undulating Agricultural Terrain. American Society of Agronomy Meetings New Orleans, November 7,2007 (282-3).
Modeling Grain Protein Formation in Relation to N Uptake and Remobilzation in Rice - (Book / Chapter)
Zhu, Y., Li, W., Ye, H., Mcmaster, G.S., Cao, W. 2008. Modeling Grain Protein Formation in Relation to N Uptake and Remobilzation in Rice. In: Ma, L., Ahuja, L.R., Bruulsema, T.W., editors. Quantifying and Understanding Plant Nitrogen Uptake for Systems Modeling. Boca Raton, FL: CRC Press. p. 147-167.
Evaluating GPFARM for No-Tillage Dryland Experimental Sites in Eastern Colorado Reprint Icon - (Peer Reviewed Journal)
Ascough Ii, J.C., Mcmaster, G.S., Andales, A.A., Hansen, N.C., Ahuja, L.R., Sherrod, L.A. 2007. Evaluating GPFARM for No-Tillage Dryland Experimental Sites in Eastern Colorado. Transactions of the ASABE, 50(5):1565-1578.
Reconciling Alternative Models of Phenological Development in Winter Wheat - (Peer Reviewed Journal)
Jamieson, P.D., Brooking, I.R., Semenov, M.A., Mcmaster, G.S., White, J.W., Porter, J.R. 2007. Reconciling Alternative Models of Phenological Development in Winter Wheat. Field Crops Research.103:36-41.doi:10.1016/j.fcr.2007.04.009.
Regression-Based Analysis of Modeled Responses to Water Deficits in Wheat and Common Bean - (Abstract Only)
White, J.W., Hoogenboom, G., Herndl, M., Mcmaster, G.S. 2007. Regression-Based Analysis of Modeled Responses to Water Deficits in Wheat and Common Bean. Biological Systems Simulation Group Proceedings, pp. 29-30.
Chapter 2. Normal Plant Appearance and Development - (Proceedings)
Abendroth, L., Jackson, T., Elmore, R., Wilhelm, W.W., Mcmaster, G.S. 2006. Chapter 2. Normal Plant Appearance and Development. Field Crop Diagnostic Manual. Nebraska Agricultural Experiment Station Bulletin.
Building Plant Canopies: Phytomer Canon in Development - (Abstract Only)
Mcmaster, G.S., Hargreaves, J.G. 2006. Building Plant Canopies: Phytomer Canon in Development. ASA-CSSA-SSSA Annual Meeting Abstracts. Indianapolis, IN. November 13, 2006.
GPFARM Evaluation Across a No-Till Dryland Agroecosystem Landscape Catena - (Abstract Only)
Ascough Ii, J.C., Andales, A.A., Mcmaster, G.S., Ahuja, L.R. 2006. Gpfarm evaluation across a no-till dryland agroecosystem landscape catena. ASA-CSSA-SSSA Annual Meeting Abstracts. Indianapolis, IN. 11/15/2006.
PHENOLOGY, WATER, TEMPERATURE, AND SIMULATION: SOME THOUGHTS DU JOUR - (Abstract Only)
Mcmaster, G.S. 2006. Phenology, water, temperature, and simulation: some thoughts du jour. Meeting Abstract. Biological Systems Simulation Conference. Fort Collins, CO. April 11-13,2006.
Structured Procedures for Assessing Model Responsees to Water and Nitrogen Deficits - (Proceedings)
White, J.W., Hoogenboom, G., Hunt, L.A., Mcmaster, G.S. 2006. Structured Procedures for Assessing Model Responsees to Water and Nitrogen Deficits. Biological Systems Simulation Group Proceedings, Fort Collins, Colorado, April 11-13, 2006.
CANOPY DEVELOPMENT OF WHEAT - (Book / Chapter)
Mcmaster, G.S., Wilhelm, W.W. 2006. Canopy development of wheat. Book Chapter.
AN IMPROVED AGRICULTURAL SYSTEM MODEL FOR SPACE-TIME SIMULATION OF AGRICULTURAL LANDSCAPE VARIABILITY - (Abstract Only)
Ascough II, J.C., Ma, L., Green, T.R., Flerchinger, G.N., Mcmaster, G.S., Ahuja, L.R., Vandenberg, B.C. 2006. An improved agricultural system model for space-time simulation of agricultural landscape variability. World Congress of Soil Science. July 9-15,2006.
PRODUCERS, DECISION SUPPORT SYSTEMS, AND GPFARM: LESSONS LEARNED FROM A DECADE OF DEVELOPMENT Reprint Icon - (Proceedings)
Ascough Ii, J.C., Dunn, G.H., Mcmaster, G.S., Ahuja, L.R., Andales, A.A. 2005. Producers, decision support systems, and gpfarm: lessons learned from a decade of development. International Congress on Modeling and Simulation Proceedings.
MULTI-CROP PLANT GROWTH MODELING FOR AGRICULTURAL MODELS AND DECISION SUPPORT SYSTEMS - (Proceedings)
Mcmaster, G.S., Ascough Ii, J.C., Edmunds, D.A., Andales, A.A., Wagner, L.E., Fox, F.A. 2005. Multi-crop plant growth modeling for agricultural models and decision support systems. International Congress on Modeling and Simulation Proceedings.
DEVELOPMENTAL SEQUENCES FOR SIMULATING CROP PHENOLOGY FOR WATER-LIMITING CONDITIONS - (Peer Reviewed Journal)
Mcmaster, G.S., Wilhelm, W.W., Frank, A.B. 2005. Developmental sequences for simulating crop phenology for water-limiting conditions. Australian Journal of Agricultural Research, Special Issue. Vol. 56, Issue 11.
SEQUENCE OF DEVELOPMENT IN MAIZE - (Abstract Only)
Wilhelm, W.W., McMaster, G.S. 2005. Sequence of development in maize. Abstract No. 4355. In ASA-CSSA-SSSA Abstracts 2005 [CD-ROM]. ASA, CSSA, and SSSA, Madison, WI.
CENTENARY REVIEW: PHYTOMERS, PHYLLOCHRONS, PHENOLOGY AND TEMPERATE CEREAL DEVELOPMENT - (Peer Reviewed Journal)
Mcmaster, G.S. 2005. Centenary review: phytomers, phyllochrons, phenology and temperate cereal development. Journal of Agricultural Science. Cambridge. 43:1-14. 2005
SIMULATING MULT-CROP PHENOLOGY IN RESPONSE TO ABIOTIC STRESSES - (Abstract Only)
Mcmaster, G.S. 2004. Simulating mult-crop phenology in response to abiotic stresses. Meeting Abstract. ASA-CSSA-SSSA 2004 ANNUAL MEETING, SEATTLE, WASHINGTON, OCT. 31-NOV. 4, 2004.
MODEL PARAMETERS FOR AGRICULTURAL SYSTEMS WITH NONLINEAR PROCESS INTERATIONS AND SPATIAL VARIABILITY - (Abstract Only)
Green, T.R., Ahuja, L.R., Ascough II, J.C., Ma, L., Erskine, R.H., McMaster, G.S. 2004. Model parameters for agricultural systems with nonlinear process interations and spatial variability. Agronomy Abstracts a04-5627. (CD-ROM). 2004.
SIMULATING WATER STREE RESPONSES IN CROP PHENOLOGY MODELS - (Abstract Only)
Mcmaster, G.S. 2004. Simulating water stree responses in crop phenology models. Symposium Proceedings. International Symposium. Perth, Australia. September 2004.
PUTTING GENES INTO GENETIC COEFFICIENTS - (Peer Reviewed Journal)
Baenziger, P., Mcmaster, G.S., Wilhelm, W.W., Weiss, A., Hays, C.J. 2004. Putting genes into genetic coefficients. Field Crops Research. Oct. 2004. Volume 90, pp. 133-143.
PREFACE: PHYSIOLOGY, GENOMICS AND CROP RESPONSE TO GLOBAL CHANGE - (Peer Reviewed Journal)
White, J.W., Mcmaster, G.S., Edmeades, G. 2004. Preface: physiology, genomics and crop response to global change. Field Crops Research. 90(1):1-3.
GENOMICS AND CROP RESPONSE TO GLOBAL CHANGE: WHAT HAVE WE LEARNED? - (Peer Reviewed Journal)
White, J.W., Mcmaster, G.S., Edmeades, G. 2004. Genomics and crop response to global change: what have we learned?. Field Crops Research. 90:165-169.
GENOMICS AND THE PHYSIOLOGIST: BRIDGING THE GAP BETWEEN GENES & CROP RESPONSE - (Peer Reviewed Journal)
Edmeades, G.O., Mcmaster, G.S., White, J.W., Campos, H. 2004. Genomics and the physiologist: bridging the gap between genes & crop response. Field Crops Research. Oct. 2004. Vol. 90, pp. 5-18.
CROP GROWTH MODELING AND DECISION SUPPORT SYSTEMS: SELECTED PERSPECTIVES FROM GPFARM - (Abstract Only)
Mcmaster, G.S. 2004. Crop growth modeling and decision support systems: selected perspectives from gpfarm. Workshop Proceedings. Intl. Workshop on Applications, Enhancements, and Collaboration of ARS RZWQM and GPFARM Models, April 20-22, 2004. Fort Collins, CO.
THE FUTURE OF SPATIAL MODELING AT GPSRU - (Abstract Only)
Ascough Ii, J.C., Green, T.R., Ahuja, L.R., Mcmaster, G.S., Ma, L. 2004. The future of spatial modeling at GPSRU. Workshop Proceedings. Intl. Workshop on Applications, Enhancements, and Collaboration of ARS RZWQM and GPSFARM Models, April 20 - 22, 2004, Fort Collins, CO.
GPFARM MODELING OF CORN YIELD AND RESIDUAL SOIL NITRATE-N - (Peer Reviewed Journal)
Shaffer, M.J., Bartling, P.N., Mcmaster, G.S. 2004. Gpfarm modeling of corn yield and residual soil nitrate-n. Computers and Electronics in Agriculture. May 2004. Volume 43, Issue 2, Pages 87-107.
PHENOLOGICAL RESPONSES OF WHEAT AND BARLEY TO WATER AND TEMPERATURE: IMPROVING SIMULATION MODELS - (Peer Reviewed Journal)
Mcmaster, G.S., Wilhelm, W.W. 2003. Phenological responses of wheat and barley to water and temperature: improving simulation models. Journal of Agricultural Science. Volume 141, pg 129-147.
SIMULATION OF TILLERING IN SMALL GRAIN CEREALS: PAST, PRESENT, AND FUTURE. - (Abstract Only)
Wilhelm, W.W., Mcmaster, G.S. 2003. Simulation of tillering in small grain cereals: past, present, and future.. Agronomy Abstracts A03-Wilhelm 101795.
PUTTING GENETICS INTO GENETIC COEFFICIENTS - (Abstract Only)
Baenziger, P.S., Weiss, A., Hays, C., Wilhelm, W.W., Mcmaster, G.S. 2003. Putting genetics into genetic coefficients. Agronomy Abstracts CO2-Baenziger-774906.
SIMULATING CROP PHENOLOGY - (Proceedings)
MCMASTER, G.S. SIMULATING CROP PHENOLOGY. INTERNATIONAL CROP SCIENCE CONGRESS. Brisbane, Australia. September 26-October 1, 2004. Published on CDROM.
GPFARM PLANT MODEL PARAMETERS: COMPLICATIONS OF VARIETIES AND THE GENOTYPE X ENVIRONMENT INTERACTION IN WHEAT - (Peer Reviewed Journal)
MCMASTER, G.S., ASCOUGH II, J.C., SHAFFER, M.J., DEER ASCOUGH, L.A., BYRNE, P.F., NIELSEN, D.C., HALEY, S.D., ANDALES, A.A., DUNN, G.H. GPFARM PLANT MODEL PARAMETERS: COMPLICATIONS OF VARIETIES AND THE GENOTYPE X ENVIRONMENT INTERACTION IN WHEAT. TRANSACTIONS OF THE AMERICAN SOCIETY OF AGRICULTURAL ENGINEERS. 2003.
SPRING WHEAT LEAF APPEARANCE AND TEMPERATURES:EXTENDING THE PARADIGM - (Peer Reviewed Journal)
Mcmaster, G.S., Wilhelm, W.W., Palic, D.B., Porter, J.R., Jamieson, P.D. 2003. Spring wheat leaf appearance and temperatures:extending the paradigm. Annals Of Botany. Volume 91, pg. 697-705.
PARAMETERIZING SHOOTGRO 4.0 TO SIMULATE WINTER WHEAT PHENOLOGY AND YIELD IN THE CZECH REPUBLIC - (Peer Reviewed Journal)
Zalud, Z., Mcmaster, G.S., Wilhelm, W.W. 2003. Parameterizing shootgro 4.0 to simulate winter wheat phenology and yield in the czech republic. European Society of Agronomy. Vol. 19, Issue 4, pg. 495-507
SIMULATING RESPONSE TO TEMPERATURE - (Proceedings)
Hunt, L.A., Yan, W., Mcmaster, G.S. 2003. Simulating response to temperature. CIMMYT Symposium Proceedings. Proceedings of the Maize and Wheat Systems Modeling Workshop, April 23-25, 2001. CIMMYT, Natural Resources Group, Geographic Information Systems, Series 03-01. pp. 23-29.
GPFARM CYCLING OF CROP RESIDUES - (Abstract Only)
Shaffer, M.J., Bartling, P.N., Vigil, M.F., Mcmaster, G.S., Dunn, G.H., Ascough Ii, J.C., Ahuja, L.R. 2002. Gpfarm cycling of crop residues. American Society of Agronomy Meetings. Indianapolis, IN. November 10-14, 2002.
PARAMETERIZING GPFARM: AN AGRICULTURAL DECISION SUPPORT SYSTEM FOR INTEGRATING SCIENCE, ECONOMICS, RESOURCE USE, AND ENVIRONMENTAL IMPACTS - (Proceedings)
Mcmaster, G.S., Ascough Ii, J.C., Shaffer, M.J., Byrne, P.F., Haley, S.D., Nielsen, D.C., Andales, A.A., Dunn, G.H., Weltz, M.A., Ahuja, L.R. 2002. Parameterizing gpfarm: an agricultural decision support system for integrating science, economics, resource use, and environmental impacts. International Society of Ecological Modeling Annual Meetings. IN: A.E. Rizzoli and A.J. Jakeman (Eds.), Integrated Assessment and Decision Support Proceedings of the 1st Biennial Meeting of the IEMSS. June 24-27, 2002, Lugano, Switzerland. Vol. 1, pg 72-77.
MULTICRITERIA SPATIAL DECISION SUPPORT SYSTEMS FOR AGRICULTURE: OVERVIEW, APPLICATIONS, AND FUTURE RESEARCH DIRECTIONS - (Proceedings)
Ascough II, J.C., Rector, H.D., Hoag, D.L., Mcmaster, G.S., Vandenberg, B.C., Shaffer, M.J., Weltz, M.A., Ahuja, L.R. 2002. Multicriteria spatial decision support systems for agriculture: overview, applications, and future research directions. Environmental Modeling International Conference Proceedings. IN: A.E. Rizzoli and A.J. Jakeman (Eds.), Integrated Assessment and Decision Support Proceedings of the 1st Biennial Meeting of the IEMSS. June 24-27, 2002, Lugano, Switzerland. Vol. 3, pp. 175-180.
APPLICATION AND TESTING OF GPFARM: A FARM AND RANCH DECISION SUPPORT SYSTEMFOR EVALUATING ECONOMIC AND ENVIRONMENTAL SUSTAINABILITY OF AGRICULTURAL ENTERPRISES - (Peer Reviewed Journal)
Dunn, G.H., Weltz, M.A., Mcmaster, G.S., Ascough Ii, J.C., Shaffer, M.J., Palic, D.B., Vandenberg, B.C., Bartling, P.N., Edmunds, D.A., Hoag, D.L., Ahuja, L.R. 2002. Application and testing of gpfarm: a farm and ranch decision support systemfor evaluating economic and environmental sustainability of agricultural enterprises. Acta Horticulture (ISHS) 593:171-177. www.actahort.og/books/593/593_22.htm
WEED REPRODUCTION MODEL PARAMETERS MAY BE ESTIMATED FROM CROP YIELD LOSS DATA - (Peer Reviewed Journal)
Canner, S.R., Wiles, L., Mcmaster, G.S. 2002. Weed reproduction model parameters may be estimated from crop yield loss data. Weed Science. 50:763-772.
NITROGEN AND DRY MATTER DISTRIBUTION BY CULM AND LEAF POSITION AT TWO STAGES OF VEGETATIVE GROWTH IN WINTER WHEAT. - (Peer Reviewed Journal)
WILHELM, W.W., MCMASTER, G.S., HARRELL, D.M. NITROGEN AND DRY MATTER DISTRIBUTION BY CULM AND LEAF POSITION AT TWO STAGES OF VEGETATIVE GROWTH IN WINTER WHEAT.. AGRONOMY JOURNAL. 2002. 94(5):1078-1086.
COMPUTER USE AND SATISFACTION BY GREAT PLAINS PRODUCERS: ORDERED LOGIT MODEL ANALYSIS - (Peer Reviewed Journal)
ASCOUGH II, J.C., HOAG, D.L., MCMASTER, G.S., FRASIER, W.M. COMPUTER USE AND SATISFACTION BY GREAT PLAINS PRODUCERS: ORDERED LOGIT MODEL ANALYSIS. AGRONOMY JOURNAL. 94:1263-1269 (2002).
GPFARM: AN INTEGRATED DECISION SUPPORT SYSTEM FOR SUSTAINABLE GREAT PLAINS AGRICULTURE - (Proceedings)
ASCOUGH II, J.C., HOAG, D.L., SHAFFER, M.J., MCMASTER, G.S., AHUJA, L.R. GPFARM: AN INTEGRATED DECISION SUPPORT SYSTEM FOR SUSTAINABLE GREAT PLAINS AGRICULTURE. MEETING ABSTRACT. 2002.
SOIL MANAGEMENT ALTERS SEEDLING EMERGENCE AND SUBSEQUENT AUTUMN GROWTH AND YIELD IN DRYLAND WINTER WHEAT-FALLOW SYSTEMS IN THE CENTRAL GREAT PLAINS ON A CLAY LOAM SOIL - (Peer Reviewed Journal)
Mcmaster, G.S., Palic, D.B., Dunn, G.H. 2002. Soil management alters seedling emergence and subsequent autumn growth and yield in dryland winter wheat-fallow systems in the central great plains on a clay loam soil. International Journal of Soil and Tillage Research. Vol. 65, pp. 193-206.
WINTER WHEAT VARIETIES DIFFER IN PHENOLOGICAL AND CANOPY DEVELOPMENT RESPONSES TO WATER STRESS - (Abstract Only)
MCMASTER, G.S., BYRNE, P., HALEY, S., NIELSON, D., STUSHNOFF, C., DOESKEN, N. WINTER WHEAT VARIETIES DIFFER IN PHENOLOGICAL AND CANOPY DEVELOPMENT RESPONSES TO WATER STRESS. 2001 Annual Meeting Abstracts (ASSA/CSSA/SSSA), Oct. 21-25, 2001. Charlotte, NC on CD.
GPFARM SIMULATION OF SOIL NUTRIENT CYCLING UNDER MAIZE - (Abstract Only)
Shaffer, M.J., Yu, M., Bartling, P.N., Ho, N., Mcmaster, G.S., Ascough Ii, J.C., Ahuja, L.R., Weltz, M.A. 2001. Gpfarm simulation of soil nutrient cycling under maize. Agronomy Abstracts. American Society of Agronomy Meetings, October 2001.
GPFARM:AN INTEGRATED DECISION SUPPORT SYSTEM FOR SUSTAINABLE GREAT PLAINS AGRICULTURE - (Book / Chapter) - (07-May-01)
RE-EXAMINING CURRENT QUESTIONS OF WHEAT LEAF APPEARANCE AND TEMPERATURE PROCEEDINGS OF THE MAIZE AND WHEAT SYSTEMS MODELING WORKSHOP APRIL, 2001. - (Proceedings)
Mcmaster, G.S., Hunt, L.A. 2003. Re-examining current questions of wheat leaf appearance and temperature. Proceedings of the maize and wheat systems modeling workshop, April 23-25, 2001. CIMMYT, Natural Resources Group, Geographic Information Systems Series 03-01, pp. 18-22.
MODELING FIELD CROP AND RANGELAND CANOPY DEVELOPMENT, STRUCTURE, AND DYNAMICS - (Peer Reviewed Journal)
Mcmaster, G.S. 2002. Modeling field crop and rangeland canopy development, structure, and dynamics. Acta Horticulture Proceedings. Volume 593, pg. 165-170.
APPLICATION AND TESTING OF GPFARM: A FARM AND RANCH DECISION SUPPORT SYSTEM FOR EVALUATING ECONOMIC AND ENVIRONMENTAL SUSTAINABILITY OF AGRICULTURAL ENTERPRISES - (Abstract Only)
Mcmaster, G.S., Dunn, G.H., Weltz, M.A., Palic, D.B. 2001. Application and testing of gpfarm: a farm and ranch decision support system for evaluating economic and environmental sustainability of agricultural enterprises. Biological Systems Simulation Group Proceedings, March 2001.
APPLICATION AND TESTING OF GPFARM: A FARM AND RANCH DECISION SUPPORT SYSTEM FOR EVALUATING ECONOMIC AND ENVIRONMENTAL SUSTAINABILITY OF AGRICULTURAL ENTERPRISES - (Abstract Only)
Mcmaster, G.S., Dunn, G.H., Weltz, M.A., Palic, D.B. 2001. Application and testing of gpfarm: a farm and ranch decision support system for evaluating economic and environmental sustainability of agricultural enterprises. Biological Systems Simulation Group Proceedings, March 2001.
MODELING CROP AND RANGELAND CANOPY STRUCTURE AND DYNAMICS - (Abstract Only)
Mcmaster, G.S. 2001. Modeling crop and rangeland canopy structure and dynamics. Biological Systems Simulation Group Proceedings. March 26, 2001.
MODELING CROP AND RANGELAND CANOPY STRUCTURE AND DYNAMICS - (Abstract Only)
Mcmaster, G.S. 2001. Modeling crop and rangeland canopy structure and dynamics. Biological Systems Simulation Group Proceedings. March 26, 2001.
MODELING CROP AND RANGELAND CANOPY STRUCTURE AND DYNAMICS - (Abstract Only)
Mcmaster, G.S. 2001. Modeling crop and rangeland canopy structure and dynamics. Biological Systems Simulation Group Proceedings. March 26, 2001.
MODELING CROP AND RANGELAND CANOPY STRUCTURE AND DYNAMICS - (Abstract Only)
Mcmaster, G.S. 2001. Modeling crop and rangeland canopy structure and dynamics. Biological Systems Simulation Group Proceedings. March 26, 2001.
APPLICATION AND TESTING OF GPFARM: A FARM AND RANCH DECISION SUPPORT SYSTEM FOR EVALUATING ECONOMIC AND ENVIRONMENTAL SUSTAINABILITY OF AGRICULTURAL ENTERPRISES - (Abstract Only)
Mcmaster, G.S., Dunn, G.H., Weltz, M.A., Palic, D.B. 2001. Application and testing of gpfarm: a farm and ranch decision support system for evaluating economic and environmental sustainability of agricultural enterprises. Biological Systems Simulation Group Proceedings, March 2001.
APPLICATION AND TESTING OF GPFARM: A FARM AND RANCH DECISION SUPPORT SYSTEM FOR EVALUATING ECONOMIC AND ENVIRONMENTAL SUSTAINABILITY OF AGRICULTURAL ENTERPRISES - (Abstract Only)
Mcmaster, G.S., Dunn, G.H., Weltz, M.A., Palic, D.B. 2001. Application and testing of gpfarm: a farm and ranch decision support system for evaluating economic and environmental sustainability of agricultural enterprises. Biological Systems Simulation Group Proceedings, March 2001.
RE-EXAMINING CURRENT QUESTIONS OF WHEAT LEAF APPEARNACE AND TEMPERATURE - (Proceedings)
MCMASTER, G.S., HUNT, L.A. RE-EXAMINING CURRENT QUESTIONS OF WHEAT LEAF APPEARNACE AND TEMPERATURE. MEETING ABSTRACT. 2001. GIS, Series 03-01.pages 18-22.
USING THE GPFARM DSS FOR EVALUATING DRYLAND CROPPING SYSTEM PRODUCTION AND ECONOMICS IN THE WESTCENTRAL GREAT PLAINS - (Abstract Only)
2000 Annual Meetings Abstracts, American Society of Agronomy/Crop Science Society of America/Soil Science Society of America. Minneapolis, Minnesota, November 5-9, 2000. pp 22.
USING THE GPFARM DSS FOR EVALUATING DRYLAND CROPPING SYSTEM PRODUCTION AND ECONOMICS IN THE WESTCENTRAL GREAT PLAINS - (Abstract Only)
2000 Annual Meetings Abstracts, American Society of Agronomy/Crop Science Society of America/Soil Science Society of America. Minneapolis, Minnesota, November 5-9, 2000. pp 22.
USING THE GPFARM DSS FOR EVALUATING DRYLAND CROPPING SYSTEM PRODUCTION AND ECONOMICS IN THE WESTCENTRAL GREAT PLAINS - (Abstract Only)
2000 Annual Meetings Abstracts, American Society of Agronomy/Crop Science Society of America/Soil Science Society of America. Minneapolis, Minnesota, November 5-9, 2000. pp 22.
USING THE GPFARM DSS FOR EVALUATING DRYLAND CROPPING SYSTEM PRODUCTION AND ECONOMICS IN THE WESTCENTRAL GREAT PLAINS - (Abstract Only)
2000 Annual Meetings Abstracts, American Society of Agronomy/Crop Science Society of America/Soil Science Society of America. Minneapolis, Minnesota, November 5-9, 2000. pp 22.
COMPUTER USE IN AGRICULTURE: AN ANALYSIS OF GREAT PLAINS PRODUCERS - (Peer Reviewed Journal) - (27-Mar-99)
APPLICATION OF GENERIC CROP GROWTH MODEL TECHNOLOGY TO GREAT PLAINS CONSERVATION SYSTEMS - (Proceedings)
Deer-Ascough, L.A., Mcmaster, G.S., Ascough Ii, J.C., Peterson, G.A. 1998. Application of generic crop growth model technology to great plains conservation systems. American Society of Agricultural Engineers Meetings Papers. Paper #98-2133.
APPLICATION OF GENERIC CROP GROWTH MODEL TECHNOLOGY TO GREAT PLAINS CONSERVATION SYSTEMS - (Proceedings)
Deer-Ascough, L.A., Mcmaster, G.S., Ascough Ii, J.C., Peterson, G.A. 1998. Application of generic crop growth model technology to great plains conservation systems. American Society of Agricultural Engineers Meetings Papers. Paper #98-2133.
APPLICATION OF GENERIC CROP GROWTH MODEL TECHNOLOGY TO GREAT PLAINS CONSERVATION SYSTEMS - (Proceedings)
Deer-Ascough, L.A., Mcmaster, G.S., Ascough Ii, J.C., Peterson, G.A. 1998. Application of generic crop growth model technology to great plains conservation systems. American Society of Agricultural Engineers Meetings Papers. Paper #98-2133.
APPLICATION OF GENERIC CROP GROWTH MODEL TECHNOLOGY TO GREAT PLAINS CONSERVATION SYSTEMS - (Proceedings)
Deer-Ascough, L.A., Mcmaster, G.S., Ascough Ii, J.C., Peterson, G.A. 1998. Application of generic crop growth model technology to great plains conservation systems. American Society of Agricultural Engineers Meetings Papers. Paper #98-2133.
Optimal Wheat (Triticum Crestivum L.) Cutting Height for Grain Harvest and Conserving Soil and Water - (Abstract Only) - (15-Apr-96)
Tillage and Residue. Ii. Effects on Soil Water in Dryland Wheat-Fallow Systems - (Abstract Only) - (01-May-95)
Tillage and Residue. I. Effects on Surface Soil Temperature in Dryland Wheat-Fallow Systems - (Abstract Only) - (01-May-95)
The Gpfarm Decision Support System for Whole Farm/ranch Management - (Proceedings) - (01-Jan-95)
Patterns in Soil Characteristics and Dryland Spring Wheat Biomass Within a Soil Mapping Unit. - (Abstract Only) - (09-May-94)
ARS News Articles
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