Projects

MECHANISTIC PROCESS-LEVEL CROP SIMULATION MODELS FOR ASSESSMENT OF AGRICULTURAL SYSTEMS Appropriated (D)   Accession Number: 415286

Enhancing Food Security of Underserved Populations in the Northeast Through Sustainable Regional Food Systems Reimbursable (R)   Accession Number: 424565

DEVELOPMENT OF DATASETS AND IMPROVED MODULES FOR CROP SYSTEMS & GLOBAL CHANGE LAB CROP AND SOIL MODELING SYSTEMS Specific Cooperative Agreement (S)   Accession Number: 422936

Publications (Clicking on the reprint icon will take you to the publication reprint.)

Plasticulture to SPAR chamber technology: a survey of recent CSGCL activities - (Abstract Only) - (12-Feb-13)

A case study of crop model applications in an increasing diversity of genetically modified traits - (Abstract Only) - (03-Jan-13)

Effects of elevated CO2 and cyclic drought on potato under varying radiation regimes - (Peer Reviewed Journal)

Fleisher, D.H., Barnaby, J.Y., Sicher Jr, R.C., Resop, J.P., Timlin, D.J., Reddy, V. 2013. Effects of elevated CO2 and cyclic drought on potato under varying radiation regimes. Agricultural and Forest Meteorology. 171-172: 270-280.

An aggregated crop yield index to explore regional potential production capacity - (Abstract Only) - (04-Dec-12)

Mapping potato productivity over the U.S. eastern seaboard using a geospatial crop model - (Abstract Only) - (27-Nov-12)

Modeling water and nutrient uptake of potato under drought with special emphasis on simulating root growth - (Abstract Only) - (29-Aug-12)

Combining explanatory crop models with geospatial data for regional analyses of crop yield using field-scale modeling units - (Peer Reviewed Journal)

Resop, J.P., Fleisher, D.H., Wang, Q., Timlin, D.J., Reddy, V. 2012. Combining explanatory crop models with geospatial data for regional analyses of crop yield using field-scale modeling units. Computers and Electronics in Agriculture. 89(1):51-61. DOI: 10.1016/J.COMPAG.2012.08.001.

Evaluating county-level potential production capacity of potatoes for Maine using the crop model SPUDSIM - (Abstract Only) - (01-Aug-12)

Modeling temperature responses of leaf growth, development, and biomass in maize with MAIZSIM - (Peer Reviewed Journal)

Kim, S., Yang, Y., Timlin, D.J., Fleisher, D.H., Dathe, A., Reddy, V., Staver, K. 2012. Modeling temperature responses of leaf growth, development, and biomass in maize with MAIZSIM. Agronomy Journal. 104:1523-1537 DOI: 10.2134/agron/2011.0321.

Simulating potato gas exchange as influenced by CO2 and irrigation - (Abstract Only) - (19-Apr-12)

Comparison of periodic drought on potato at two different CO2 levels - (Abstract Only) - (19-Apr-12)

Sensitivity analysis of an explanatory crop model at the regional scale using geospatial data - (Abstract Only) - (19-Apr-12)

Modeling potato root and shoot growth under drought and nutrient stress - (Abstract Only) - (19-Apr-12)

Cotton growth and photosynthetic acclimation to phosphorus nutrition and CO2 enrichment - (Abstract Only) - (19-Apr-12)

Interactions between phosphorus deficiency and CO2 fertilization on cotton - (Proceedings) - (13-Apr-12)

Influence of phosphorus nutrition on growth and physiology of cotton grown under current and projected atmospheric carbon dioxide concentrations - (Abstract Only) - (16-Mar-12)

Quantifying the measurement errors in a LI-6400 gas exchange system and their effects on the parameterization of Farquhar et al. model for C3 leaves - (Peer Reviewed Journal)

Wang, Q., Fleisher, D.H., Reddy, V., Timlin, D.J., Chun, J.A. 2012. Quantifying the measurement errors in a LI-6400 gas exchange system and their effects on the parameterization of Farquhar et al. model for C3 leaves. Photosynthetica. 50(2):223-238.

Simulating potential production capacity of potatoes in Maine at multiple scales using a geospatial crop model - (Abstract Only) - (08-Dec-11)

Nitrogen concentration and dry matter accumulation in maize crop: Assessing maize nitrogen status with an allometric function and a chlorophyll meter - (Peer Reviewed Journal)

Yang, Y., Timlin, D.J., Fleisher, D.H., Lokhande, S., Chun, J.A., Soo-Hyung, K., Staver, K., Reddy, V. 2012. Nitrogen concentration and dry matter accumulation in maize crop: Assessing maize nitrogen status with an allometric function and a chlorophyll meter. Communication in Plant and Soil Analysis. 43(11):1563-1575.

Response of potato gas exchange and productivity to phosphorus deficiency and CO2 enrichment - (Peer Reviewed Journal)

Fleisher, D.H., Wang, Q., Timlin, D.J., Chun, J.A., Reddy, V. 2012. Response of potato gas exchange and productivity to phosphorus deficiency and CO2 enrichment. Crop Science. 52:1803-1815.

Potato stem density effects on canopy development and production - (Peer Reviewed Journal)

Fleisher, D.H., Timlin, D.J., Yang, Y., Reddy, V. 2011. Potato stem density effects on canopy development and production. Potato Research. 54:137-155.

Effects of carbon dioxide and phosphorus supply on potato dry matter allocation and canopy morphology - (Peer Reviewed Journal) - (18-Jan-11)

Effect of elevated carbon dioxide and water stress on gas exchange and water use efficiency in corn - (Peer Reviewed Journal)

Chun, J.A., Wang, Q., Timlin, D.J., Fleisher, D.H., Reddy, V. 2011. Effect of elevated carbon dioxide and water stress on gas exchange and water use efficiency in corn. Agricultural and Forest Meteorology. 151:378-384.

Monitoring the vulnerability and need for adaptation planning for food security - (Book / Chapter)

Reddy, V., Fleisher, D.H., Timlin, D.J., Anbumozhi, V., Reddy, K.R., Yang, Y. 2012. Monitoring the vulnerability and need for adaptation planning for food security. In: Anbumozhi, V., Breiling, M., Pathmarajah, S., Reddy, V.R. editors. Climate Change in Asia and the Pacific: How can countries adapt? 1st edition. New Delhi, India: SAGE Publications India Pvt Ltd. p. 36-46.

Effects of carbon dioxide and temperature on crops: Lessons from SPAR growth chambers - (Book / Chapter)

Fleisher, D.H., Timlin, D.J., Reddy, K.R., Reddy, V., Yang, Y., Kim, S. 2010. Effects of carbon dioxide and temperature on crops: Lessons from SPAR growth chambers. In: Hillel, D., Rosenzweig, C., editors. Handbook of Climate Change and Agroecosystems: Impacts, Adaptation, and Mitigation. Hackensack, NJ: World Scientific Publishing Co., Inc. p. 55-86.

Simulation of potato gas exchange rates using SPUDSIM - (Peer Reviewed Journal)

Fleisher, D.H., Timlin, D.J., Yang, Y., Reddy, V. 2010. Simulation of potato gas exchange rates using SPUDSIM. Agricultural and Forest Meteorology. 150:432-442.

Uniformity of soil-plant-atmosphere-research chambers - (Peer Reviewed Journal)

Fleisher, D.H., Timlin, D.J., Yang, Y., Reddy, V., Reddy, K.R. 2009. Uniformity of soil-plant-atmosphere-research chambers. Transactions of the ASABE. 52(5):1721-1731.

Interaction of air temperature and nitrogen supply on root growth and nitrogen uptake by corn - (Abstract Only) - (06-May-09)

Scale as the common language for soil variations revealed with geophysics, biophysics, and remote sensing - (Abstract Only)

Timlin, D.J., Pachepsky, Y.A., Fleisher, D.H., Shillito, R. 2009. Scale as the common language for soil variations revealed with geophysics, biophysics, and remote sensing. In: ASA-CSSA-SSSA Annual Meeting Abstracts, November 1-5, 2009, Pittsburgh, Pennsylvania. 2009 CDROM.

Modeling carbon and leaf area allocation in plant canopies via optimization - (Abstract Only) - (24-Apr-09)

Effects of CO2 and temperature on crops: Lessons from growth chambers - (Abstract Only) - (24-Apr-09)

Simulation of individual leaf size and canopy development: Approaches to carbon allocation and growth - (Abstract Only) - (14-Apr-09)

Simulating nitrogen uptake and distribution in maize - (Abstract Only) - (14-Apr-09)

Monitoring the vulnerability and adaptation planning for food security - (Abstract Only) - (01-Apr-09)

Simulating canopy transpiration and photosynthesis of corn plants under contrasting water regimes using a coupled model - (Peer Reviewed Journal)

Yang, Yang, Kim, Soo-H, Timlin, D.J., Fleisher, D.H., Quebedeaux, B., Reddy, V. 2009. Simulating canopy transpiration and photosynthesis of corn plants under contrasting water regimes using a coupled model. Transactions of the ASABE. 52(3):1011-1024.

An improved nutrient delivery system for SPAR chambers - (Abstract Only) - (23-Mar-09)

Study the dynamics of nitrogen concentration and dry matter accumulation in maize crop: analyzing maize n status with an allometric function - (Abstract Only) - (16-Mar-09)

Interaction of air temperature and nitrogen supply on root growth and nitrogen uptake by corn - (Abstract Only) - (12-Mar-09)

Simulating Leaf Area of Corn Plants at Contrasting Water Status - (Peer Reviewed Journal)

Yang, Y., Timlin, D.J., Fleisher, D.H., Kim, S., Quebedeaux, B., Reddy, V. 2009. Simulating Leaf Area of Corn Plants at Contrasting Water Status. Agricultural and Forest Meteorology. 149:1161-1167.

Yield response of potato to spatially patterned nitrogen application - (Peer Reviewed Journal)

Shillito, R., Timlin, D.J., Fleisher, D.H., Reddy, V., Quebedeaux, B. 2009. Yield response of potato to spatially patterned nitrogen application. Agriculture, Ecosystems and Environment. 129:107-116.

Non-contacting techniques for plant drought stress detection - (Peer Reviewed Journal)

Yang, Y., Ling, P.P., Fleisher, D.H., Timlin, D.J., Reddy, V. 2008. Non-contacting techniques for plant drought stress detection. Transactions of the ASABE. 51(4):1483-1492.

Effects of stem density on potato at different CO2 concentrations - (Abstract Only) - (08-Apr-08)

Evaluating the MaizSim model in simulating potential corn growth - (Abstract Only) - (08-Apr-08)

Simulation of nitrogen demand and uptake in potato using a carbon-assimilation approach - (Book / Chapter)

Timlin, D.J., Kouznetsov, M., Fleisher, D.H., Kim, S., Reddy, V. 2008. Simulation of nitrogen demand and uptake in potato using a carbon-assimilation approach. In: Ma, L., Ahuja, L.R., and Bruulsema T., editors. Quantifying Understanding Plant Nitrogen Uptake for Systems Modeling. Boca Raton, FL: CRC Press. p. 219-243.

Effects of potassium nutrition on physiological processes and derivative spectrum characteristics of corn plants - (Abstract Only) - (20-Mar-08)

Assessing uniformity in soil plant atmosphere chambers - (Abstract Only) - (14-Mar-08)

Quantifying leaf expansion and canopy development in potato as a function of nitrogen and CO2 - (Abstract Only) - (14-Mar-08)

Effects of potassium nutrition on physiological processes and derivative spectrum characteristics of corn plants - (Abstract Only) - (14-Mar-08)

Elevated carbon dioxide and water stress effects on potato canopy gas exchange, water use, and productivity - (Peer Reviewed Journal)

Fleisher, D.H., Timlin, D.J., Reddy, V. 2008. Elevated carbon dioxide and water stress effects on potato canopy gas exchange, water use, and productivity. Agricultural and Forest Meteorology. 148:1109-1122.

Simulation of the effects of limited water on photosynthesis and transpiration in field crops: Can we advance our modeling approaches? - (Book / Chapter)

Timlin, D.J., Yang, Y., Kim, S., Bunce, J.A., Anapalli, S., Fleisher, D.H., Quebedeaux, B., Reddy, V. 2009. Simulation of the effects of limited water on photosynthesis and transpiration in field crops: Can we advance our modeling approaches? In: Ahuja, L.R., Reddy, V.R., Saseendran, S.A., & Yu, Qiang, editors. Response of Crops to Limited Water: Understanding and Modeling Water Stress Effects on Plant Growth Processes: Vol. 1. Advances in Modeling Agricultural Systems. Madison, WI. American Society of Agronomy. p.105-143.

Cotton Modeling for Climate Change, On-farm Decision Support, and Policy Decisions - (Peer Reviewed Journal)

Reddy, V., Yang, Y., Reddy, K., Timlin, D.J., Fleisher, D.H. 2007. Cotton Modeling for Climate Change, On-farm Decision Support, and Policy Decisions. International Congress on Modeling and Simulation Proceedings. 1:67-72.

Interactive effects of CO2 and water stress on potato canopy growth and development - (Peer Reviewed Journal)

Fleisher, D.H., Timlin, D.J., Reddy, V. 2008. Interactive effects of CO2 and water stress on potato canopy growth and development. Agronomy Journal. 100(3):711-719.

Nitrogen Application Rate and Carbon Asssimilation in Potato: What can this tell us about nitrogen demand and uptake? - (Abstract Only) - (12-Nov-06)

A Coupled Model in Studying the Paradigms for Stomatal Behavior of Corn - (Abstract Only) - (12-Nov-06)

Simulation of Nitrogen Uptake in 2DSOIL as Passive and Active Processes - (Abstract Only) - (12-Nov-06)

Potato Gas Exchange and Canopy Development Responses to Drought and Atmospheric Carbon Dioxide - (Abstract Only)

Fleisher, D.H., Timlin, D.J., Reddy, V. 2006. Potato Gas Exchange and Canopy Development Responses to Drought and Atmospheric Carbon Dioxide. 2006 ASA-CSSA-SSSA Annual Meeting. P. 47.

EVAPOTRANSPIRATION MEASUREMENT IN CONTROLLED ENVIRONMENT CHAMBERS: A COMPARISON BETWEEN TIME DOMAIN REFLECTOMETRY AND ACCUMULATION OF CONDENSATE FROM COOLING COILS - (Peer Reviewed Journal)

Timlin, D.J., Fleisher, D.H., Kim, S., Reddy, V., Baker, J.T. 2007. Evapotranspiration measurement in controlled environment chambers: a comparison between time domain reflectometry and accumulation of condensate from cooling coils. Agronomy Journal. 99:166-173.

TWO-DIMENSIONAL SOIL WATER AND TEMPERATURE DYNAMICS UNDER ROW CROPS: MODELING APPROACHES. - (Abstract Only)

Timlin, D.J., Shillito, R.M., Pachepsky, Y.A., Kim, S., Fleisher, D.H., Quebedeaux, B. 2006. Two-dimensional soil water and temperature dynamics under row crops: modeling approaches [abstract]. International Congress of Soil Science. CD-ROM.

MODELING EXPANSION OF INDIVIDUAL LEAVES IN THE POTATO CANOPY - (Peer Reviewed Journal)

Fleisher, D.H., Timlin, D.J. 2006. Modeling expansion of individual leaves in the potato canopy. Agricultural and Forest Meteorology. 139:84-93.

TEMPERATURE INFLUENCE ON POTATO LEAF AND BRANCH DISTRIBUTION AND CANOPY PHOTOSYNTHETIC RATE - (Peer Reviewed Journal)

Fleisher, D.H., Timlin, D.J., Reddy, V. 2006. Temperature influence on potato leaf and branch distribution and canopy photosynthetic rate. Agronomy Journal. 98:1442-1452.

WHOLE PLANT PHOTOSYNTHESIS, DEVELOPMENT AND CARBON PARTIONING IN POTATO (SOLANUM TUBEROSUM L.) AS A FUNCTION OF TEMPERATURE - (Peer Reviewed Journal)

Timlin, D.J., Rahman, L., Baker, J.T., Reddy, V., Fleisher, D.H., Quebedeaux, B. 2006. Whole Plant Photosynthesis, Development and Carbon Partioning in Potato (Solanum tuberosum L.) as a Function of Temperature. Agronomy Journal. 98:1195-1203.

Regulation of active and passive nitrogen uptake in response to C02 and nitrogen application rate. - (Abstract Only)

Timlin, D.J., Fleisher, D.H., Yang, Y., Kouznetsov, M., Reddy, V., Pachepsky, Y.A. 2006. Regulation of active and passive nitrogen uptake in response to C02 and nitrogen application rate. 37th Annual Biological Systems Simulation Conference. p. 35.

APPLICATION OF GOSSYM FOR WATER MANAGEMENT IN COTTON PRODUCTION SYSTEMS - (Abstract Only)

Kim, S., Yang, Y., Timlin, D.J., Reddy, K.R., Fleisher, D.H., Reddy, V. 2006. Application of GOSSYM for water management in cotton production systems [abstract]. Biological Systems Simulation Conference. p.39.

SIMULATION OF POTATO CANOPY GROWTH AND GAS EXCHANGE - (Abstract Only)

Fleisher, D.H., Kim, S., Timlin, D.J., Yang, Y., Reddy, V. 2006. Simulation of potato canopy growth and gas exchange [abstract]. Biological Systems Simulation Conference. p.42.

MODELING THE EFFECTS ON LIMITED WATER ON GROWTH, DEVELOPMENT AND YIELD OF FIELD CROPS: CAN WE ADVANCE OUR MODELING APPROACHES? - (Abstract Only)

Timlin, D.J., Fleisher, D.H., Bunce, J.A., Kim, S., Anapalli, S., Quebedeaux, B., Reddy, V. 2006. Modeling the effects on limited water on growth, development and yield of field crops: Can we advance our modeling approaches? [abstract]. ASA-CSSA-SSSA Annual Meeting. CD-ROM.

APPROACHES TO MODELING POTATO LEAF APPEARANCE RATE - (Peer Reviewed Journal)

Fleisher, D.H., Shillito, R.M., Timlin, D.J., Kim, S., Reddy, V. 2006. Approaches to modeling potato leaf appearance rate. Agronomy Journal. 98:522-528.

MODELING LEAF GROWTH AND DEVELOPMENT IN POTATO - (Abstract Only)

Fleisher, D.H., Timlin, D.J., Kim, S., Reddy, V. 2005. Modeling leaf growth and development in potato [abstract]. ASA-CSSA-SSSA. CD-ROM.

EVAPOTRANSPIRATION MEASUREMENT IN CONTROLLED ENVIRONMENT CHAMBERS: A COMPARISON BETWEEN TIME DOMAIN REFLECTOMETRY AND ACCUMULATION OF CONDENSATE FROM COOLING COILS - (Abstract Only)

Timlin, D.J., Kim, S., Fleisher, D.H., Reddy, V. 2005. Evapotranspiration measurement in controlled environment chambers: a comparison between time domain reflectometry and accumulation of condensate from cooling coils [abstract]. ASA-CSSA-SSSA. CD-ROM.

SIMULATING SOIL-WATER DYNAMICS IN A FIELD SOIL WITH 2D-SOIL - (Abstract Only)

Shillito, R.M., Timlin, D.J., Kim, S., Fleisher, D.H., Reddy, V., Quebedeaux, B. 2005. Simulating soil-water dynamics in a field soil with 2d-soil [abstract]. ASA-CSSA-SSSA Meeting. CD-ROM.

INFLUENCE OF TEMPERATURE PERTURBATIONS ON PRODUCTION SCHEDULING AND QUALITY OF TOMATO FRUIT. - (Peer Reviewed Journal) - (25-Aug-05)

MAIZESIM: A SIMULATION MODEL FOR GROWTH AND DEVELOPMENT OF CORN - (Abstract Only)

Kim, S., Timlin, D.J., Fleisher, D.H., Reddy, V. 2005. Maizesim: a simulation model for growth and development of corn [abstract]. BARC Poster Day. p.16.

A SIMULATION MODEL FOR POTENTIAL GROWTH AND DEVELOPMENT IN CORN - (Abstract Only)

Kim, S., Timlin, D.J., Fleisher, D.H., Reddy, V. 2005. A simulation model for potential growth and development in corn [abstract]. Biological Systems Simulation Conference. p.1.

AN EVALUATION OF GLYCIM AFTER NINE YEARS OF ON-FARM TRIALS: WHY DOES GLYCIM OFTEN PREDICT HIGHER THAN MEASURED YIELDS? - (Abstract Only)

Timlin, D.J., Pachepsky, L., Pachepsky, Y.A., Whisler, F., Reddy, V., Fleisher, D.H. 2004. An evaluation of glycim after nine years of on-farm trials: why does glycim often predict higher than measured yields? [abstract]. Meeting Abstract.

LANDSCAPE-SCALE AGRICULTURAL EXPERIMENTATION: SPATIAL AUTOCORRELATION AND POTATO YIELD - (Proceedings)

Shillito, R.M., Timlin, D.J., Fleisher, D.H., Reddy, V.R., Quebedeaux, B. 2005. Landscape-Scale Agricultural Experimentation: Spatial Autocorrelation and Potato Yield. In: Proceedings of the 7th International Conference on Precision Agriculture and Other Precision Resources Management, July 25-28, 2004, Minneapolis, Minnesota. 2005 CDROM.

ELEVATED C02 CONCENTRATION ALLEVIATED WATER STRESS IN CORN (ZEA MAYS L.) CROP - (Abstract Only)

Niu, G., Timlin, D.J., Reddy, V., Kim, S., Fleisher, D.H. 2004. Elevated c02 concentration alleviated water stress in corn (zea mays l.) crop [abstract]. BARC Poster Day. Abstract No. 18.

MODELING LEAF APPEARANCE RATES IN POTATO - (Abstract Only) - (10-Jan-04)

SHORT-TERM TEMPERATURE EFFECTS ON HYDROPONICALLY GROWN TOMATOES - I. PRODUCTION SCHEDULING - (Abstract Only) - (20-Dec-03)

MODELING CANOPY DEVELOPMENT AND PHOTOSYNTHESIS IN POTATO - (Abstract Only)

Timlin, D.J., Kim, S., Pachepsky, Y.A., Reddy, V., Fleisher, D.H., Fraisse, C., Alva, A.K., Baker, J.T. 2003. Modeling canopy development and photosynthesis in potato [abstract]. American Society of Agronomy Meetings. CDROM.

MANIPULATION OF TOMATO FRUIT QUALITY THROUGH TEMPERATURE PERTURBATIONS IN CONTROLLED ENVIRONMENTS - (Abstract Only)

Fleisher, D.H., Both, A., Logendra, L., Moraru, C., Gianfagna, T., Lee, T.C., Cavazzoni, J., Janes, H. 2003. Manipulation of tomato fruit quality through temperature perturbations in controlled environments [abstract]. ASAE Annual International Meeting. Paper No. 34102.