Printable Version     E-mail this page Find Places Find People Find Biocontrol Expert Area Offices International Technology Transfer Offices Organization Chart   You are here: People & Places / Charles L Walthall NRS&S General Physical Science Global Change Phone: (301) 504-4634 Fax: (301) 504-6231 Room 4-2282 GWCC-BLTSVL 5601 SUNNYSIDE AVENUE BELTSVILLE, MD, 20705-5140 Projects (Appropriated | All ) 212 projects listed PREVALENCE AND DIVERSITY OF MANURE-ASSOCIATED PATHOGENS IN AIR AND WATER PROTECTING SURFACE AND GROUND WATERS IN EMERGING FARMING SYSTEMS OF THE NORTH CENTRAL UNITED STATES MINIMIZING AIR & WATER CONTAMINATION FROM AGRICULTURAL PESTICIDES COVER CROPPING PRACTICES TO IMPROVE WEED AND FERTILITY MANAGEMENT IN ORGANIC PRODUCTION SYSTEMS SOIL HYDROLOGY AND MANAGEMENT EFFECTS ON EROSION AND WATER QUALITY MANAGING THE FATE AND TRANSPORT OF NITROGEN, CARBON, AND AMMONIA IN ANIMAL MANURES TO IMPROVE ENVIRONMENTAL QUALITY RISK ASSESSMENT AND REMEDIATION OF SOIL AND AMENDMENT TRACE ELEMENTS BENEFITS AND RISKS OF USING WASTE FOUNDRY SAND FOR AGRICULTURAL AND HORTICULTURAL APPLICATIONS ECOLOGICAL, PHYSIOLOGICAL AND GENETIC ASPECTS OF GLOBAL CLIMATE CHANGE IMPACTS IN FIELD CROP SYSTEMS DEVELOPMENT OF ACOUSTIC AND SEISMIC TECHNOLOGY TO CHARACTERIZE SOILS, SEDIMENT FLOW AND DEPOSITION, AND IMPOUNDMENT RESERVOIRS ENVIRONMENTALLY SOUND UTILIZATION OF BYPRODUCTS AND ANIMAL WASTES SUSTAINABLE AND ORGANIC MANAGEMENT OF SELECTED FRUITS AND VEGETABLES GLOBAL CHANGE AND BELOWGROUND PROCESSES IN AGRICULTURAL SYSTEMS TRACE GAS EXCHANGES IN MIDWEST CROPPING SYSTEMS GLOBAL CHANGE: RESPONSES AND MANAGEMENT STRATEGIES FOR SEMI-ARID RANGELANDS GINNING AND PROCESSING RESEARCH TO ENHANCE QUALITY, PROFITABILITY, AND TEXTILE UTILITY OF WESTERN COTTONS INTERACTIONS BETWEEN LAND USE, LAND MGMT, AND CLIMATE CHANGE: RELATIONS TO CARBON AND NITROGEN CYCLING, TRACE GASES AND AGROECOSYSTEMS IDENTIFYING AND MANIPULATING DETERMINANTS OF PHOTOSYNTHATE PRODUCTION AND PARTITIONING PREVALENCE AND DIVERSITY OF MANURE-ASSOCIATED PATHOGENS IN AIR AND WATER NUTRIENT CYCLING AND UTILIZATION ON ORGANIC DAIRY FARMS CONSERVATION SYSTEMS RESEARCH FOR IMPROVING ENVIRONMENTAL QUALITY AND PRODUCER PROFITABILITY CONSERVATION SYSTEMS RESEARCH FOR IMPROVING ENVIRONMENTAL QUALITY AND PRODUCER PROFITABILITY DEVELOPING TOOLS TO PREDICT ATMOSPHERIC FATE OF VOC & ODORANT EMISSIONS FROM AG OPERATIONS EFFICIENT MANAGEMENT AND USE OF ANIMAL MANURE TO PROTECT HUMAN HEALTH AND ENVIRONMENTAL QUALITY EMISSION AND DISPERSION OF AIR QUALITY CONSTITUENTS FROM AGRICULTURAL SYSTEMS SOIL AND CROP MANAGEMENT SYSTEMS TO SUSTAIN AGRICULTURAL PRODUCTION AND ENVIRONMENTAL QUALITY IN THE NORTHERN GREAT PLAINS IMPACT OF SOIL RESOURCE MANAGEMENT ON SOIL BIOCHEMICAL AND CHEMICAL PROCESSES CROPPING SYSTEMS AND PRECISION LAND MANAGEMENT IN DRYLAND PACIFIC NORTHWEST CROP AND WEED RESPONSES TO INCREASING ATMOSPHERIC CARBON DIOXIDE MINIMIZING THE ENVIRONMENTAL IMPACT OF LIVESTOCK MANURES USING INTEGRATED MANAGEMENT REGIMENS POULTRY MANURE MANAGEMENT STRATEGIES TO REDUCE NON-POINT SOURCE PHOSPHORUS POLLUTION DEVELOPMENT OF EFFICIENT AND PRACTICAL METHODS FOR PRODUCING ARBUSCULAR MYCORRHIZAL FUNGI SURVIVAL AND TRANSPORT OF PATHOGENS FROM ANIMAL PRODUCTION SYSTEMS WITHIN LANDSCAPES OF THE SOUTHEASTERN USA SOIL MANAGEMENT FOR SUSTAINABLE AGRICULTURAL SYSTEMS THAT PREVENT WIND EROSION AND ENHANCE THE ENVIRONMENT ALTERNATIVE MANAGEMENT PRACTICES FOR FARMING SYSTEMS UTILIZING MANURE FARMING PRACTICES FOR THE NORTHERN CORN BELT TO PROTECT SOIL RESOURCES, SUPPORT BIOFUEL PRODUCTION AND REDUCE GLOBAL WARMING POTENTIAL SOIL RESPONSE TO CONSERVATION TILLAGE IN A COTTON-PEANUT ROTATION SOIL MANAGEMENT SYSTEMS FOR DRYLAND AND IRRIGATED CROPPING SYSTEMS SOIL ORGANIC MATTER AND NUTRIENT CYCLING TO SUSTAIN AGRICULTURE IN THE SOUTHEASTERN USA SOIL CONSERVATION SYSTEMS FOR SUSTAINABILITY OF PACIFIC NORTHWEST AGRICULTURE SOIL CONSERVATION SYSTEMS FOR SUSTAINABILITY OF PACIFIC NORTHWEST AGRICULTURE BIOGEOCHEMICAL PROCESSES INFLUENCING FORMATION AND STABILIZATION OF SOIL ORGANIC MATTER AND SOIL STRUCTURE SOIL CARBON CYCLING, TRACE GAS EMISSION, TILLAGE AND CROP RESIDUE MANAGEMENT IMPROVING SOIL AND NUTRIENT MANAGEMENT SYSTEMS FOR SUSTAINED PRODUCTIVITY AND ENVIRONMENTAL QUALITY ASSESSING MANAGEMENT EFFECTS ON CROPS AND SOILS CROPPING SYSTEMS AND PRECISION LAND MANAGEMENT IN DRYLAND PACIFIC NORTHWEST CROP AND SOIL MANAGEMENT SYSTEMS FOR WATER QUALITY PROTECTION AND AGRICULTURAL SUSTAINABILITY DEVELOPMENT OF MODELS AND CONSERVATION PRACTICES FOR WATER QUALITY MANAGEMENT AND RESOURCE ASSESSMENTS EFFICIENT AND ENVIRONMENTALLY SUSTAINABLE AGRICULTURAL WATER MANAGEMENT IN HUMID REGIONS ENVIRONMENTAL AND SOURCE WATER QUALITY EFFECTS OF MANAGEMENT PRACTICES AND LAND USE ON POORLY DRAINED LAND ENVIRONMENTALLY SOUND MANURE MANAGEMENT FOR REDUCTION OF HEALTH-RELATED MICROORGANISMS AND ODOR MANAGEMENT AND TREATMENT OF DRAINAGE WATERS FOR WATER QUALITY PROTECTION AND SUSTAINABILITY OF AGRICULTURAL PRODUCTION IN THE MIDWEST U.S. SALINITY AND TRACE ELEMENTS ASSOCIATED WITH WATER REUSE IN IRRIGATED SYSTEMS: PROCESSES, SAMPLING PROTOCOLS, AND SITE-SPECIFIC MANAGEMENT DEVELOPMENT OF ALTERNATIVE PRACTICES FOR IMPROVED WATERSHED MANAGEMENT COMMON MODULAR WIND AND WATER EROSION MODELING FOR CONSERVATION PLANNING SNOW AND HYDROLOGIC PROCESSES IN THE INTERMOUNTAIN WEST OPTIMIZING IRRIGATION MANAGEMENT FOR HUMID CLIMATES EROSION PREDICTION TECHNOLOGY TO ENHANCE CONSERVATION PLANNING HYDROLOGIC AND ENVIRONMENTAL IMPACTS OF CONSERVATION PRACTICES IN OKLAHOMA AGRICULTURAL WATERSHEDS IMPROVED WATER RESOURCES MANAGEMENT FOR IRRIGATED AGRICULTURE IN THE PACIFIC NORTHWEST SUSTAINING RURAL ECONOMIES THROUGH NEW WATER MANAGEMENT TECHNOLOGIES SALINITY AND TRACE ELEMENT MANAGEMENT FOR CROP PRODUCTION IN IRRIGATED AGRICULTURAL SYSTEMS IRRIGATION MANAGEMENT AND AUTOMATION FOR INCREASED WATER USE EFFICIENCY OBJECT MODELING AND SCALING OF LANDSCAPE PROCESSES AND CONSERVATION EFFECTS IN AGRICULTURAL SYSTEMS INTEGRATED MANAGEMENT OF LAND AND WATER RESOURCES FOR ENVIRONMENTAL AND ECONOMIC SUSTAINABILITY IN THE NORTHEAST U.S. REDUCING NITRATE LOSSES FROM AGRICULTURAL FIELDS WITH SUBSURFACE DRAINAGE UNDERSTANDING AND PREDICTING THE IMPACT OF AGRICULTURE ON THE ENVIRONMENTAL INTEGRITY OF MANAGED WATERSHEDS SOIL RESPONSE TO CONSERVATION TILLAGE IN A COTTON-PEANUT ROTATION CONSERVATION EFFECTS ASSESSMENT IN THE SOUTH GEORGIA LITTLE RIVER FATE AND TRANSPORT OF MANURE-BORNE PATHOGENIC MICROORGANISMS INNOVATIVE ANIMAL MANURE TREATMENT TECHNOLOGIES FOR ENHANCED ENVIRONMENTAL QUALITY ALTERNATIVE MANAGEMENT PRACTICES FOR FARMING SYSTEMS UTILIZING MANURE INTEGRATING FORAGE SYSTEMS FOR FOOD AND ENERGY PRODUCTION IN THE SOUTHERN GREAT PLAINS SUSTAINABLE FORAGE PRODUCTION FOR LOW-INPUT FARMING SYSTEMS QUANTIFYING LANDSCAPE FACTORS INFLUENCING SOIL PRODUCTIVITY AND THE ENVIRONMENT RANGELAND AND LIVESTOCK RESOURCE MANAGEMENT RANGELAND AND LIVESTOCK RESOURCE MANAGEMENT BIOGEOCHEMICAL PROCESSES INFLUENCING FORMATION AND STABILIZATION OF SOIL ORGANIC MATTER AND SOIL STRUCTURE ECOLOGICALLY-BASED SOIL MANAGEMENT FOR SUSTAINABLE AGRICULTURE AND RESOURCE CONSERVATION ASSESSING CLIMATE, SOIL AND LANDSCAPE PROCESSES AFFECTING AGRICULTURAL ECOSYSTEMS PARTICULATE EMISSIONS FROM WIND EROSION: PROCESSES, ASSESSMENT, AND CONTROL INTEGRATING PRODUCTION AND CONSERVATION PRACTICES TO MAINTAIN GRASS SEED FARM PROFITS ALTERNATIVES TO MEBR FOR CALIFORNIA CROPPING SYSTEMS BIOLOGICAL, MICROCLIMATE, AND TRANSPORT PROCESSING AFFECTING PEST CONTROL APPLICATION TECHNOLOGY POULTRY MANURE MANAGEMENT STRATEGIES TO REDUCE NON-POINT SOURCE PHOSPHORUS POLLUTION DEVELOP AND IMPROVE STRATEGIES FOR MANAGEMENT OF IRRIGATED AGRICULTURAL CROPS AND SOILS FORAGE MANAGEMENT SYSTEMS FOR SMALE-SCALE RUMINANT PRODUCTION IN THE APPALACHIAN REGION SOIL MANAGEMENT SYSTEMS FOR DRYLAND AND IRRIGATED CROPPING SYSTEMS DEVELOPMENT OF SUSTAINABLE PRODUCTION SYSTEMS AND WATER MANAGEMENT TECHNOLOGY FOR THE MID SOUTH ENHANCED MIDWESTERN CROPPING SYSTEMS FOR SUSTAINABILITY AND ENVIRONMENTAL QUALITY MULTI-SCALE EVALUATION OF LAND USE MANAGEMENT SYSTEMS IN THE UPPER MIDWEST ECOLOGICALLY-SOUND PEST, WATER AND SOIL MANAGEMENT STRATEGIES FOR NORTHERN GREAT PLAINS CROPPING SYSTEMS REMOTE WATER PUMPING AND ELECTRIC POWER GENERATION WITH RENEWABLE ENERGY MINIMIZING THE ENVIRONMENTAL IMPACT OF LIVESTOCK MANURES USING INTEGRATED MANAGEMENT REGIMENS IMPROVING CROP AND ANIMAL PRODUCTION SYSTEMS FOR SOUTHERN PRODUCERS DEVELOPMENT & EVALUATION OF BIOLOGICAL CONTROL AGENTS FOR INVASIVE SPECIES THREATENING THE EVERGLADES & OTHER NATURAL AND MANANGED SYSTEMS BIOLOGICALLY BASED INTEGRATED MANAGEMENT OF INVASIVE AQUATIC AND RIPARIAN WEEDS SYSTEMS AND TECHNOLOGIES FOR SUSTAINABLE SITE-SPECIFIC SOIL AND CROP MANAGEMENT IMPROVING SOIL AND NUTRIENT MANAGEMENT SYSTEMS FOR SUSTAINED PRODUCTIVITY AND ENVIRONMENTAL QUALITY MAINTAINING SOIL RESOURCES FOR EFFECTIVE CONSERVATION AND HERBICIDE MANAGEMENT IN MID-SOUTH CROP PRODUCTION PHYSIOLOGICAL MECHANISMS THAT DETERMINE CROP RESPONSE TO IRRIGATION, DISEASE AND PRODUCTION PRACTICES IMPROVING SOIL AND WATER MANAGEMENT PRACTICES IN CROPPING AND INTEGRATED CROP-LIVESTOCK SYSTEMS IMPROVING SOILS AND THEIR MANAGEMENT FOR MORE EFFICIENT WATER USE IN ENVIRONMENTALLY SUSTAINABLE AGRICULTURE IMPACT OF SOIL RESOURCE MANAGEMENT ON SOIL BIOCHEMICAL AND CHEMICAL PROCESSES ENHANCED SYSTEM MODELS AND DECISION SUPPORT TOOLS TO OPTIMIZE WATER LIMITED AGRICULTURE ENHANCING SUSTAINABILITY OF POTATO SYSTEMS IN THE NORTHEAST ENHANCING SUSTAINABILITY OF POTATO SYSTEMS IN THE NORTHEAST ENHANCED SYSTEM MODELS AND DECISION SUPPORT TOOLS TO OPTIMIZE WATER LIMITED AGRICULTURE IMPROVING CROP AND ANIMAL PRODUCTION SYSTEMS FOR SOUTHERN PRODUCERS PRINCIPLES AND PRACTICES FOR IMPROVING ORGANIC FARMING IN THE MID-ATLANTIC REGION QUANTIFYING AND PREDICTING EMISSION OF PM10 AND GREENHOUSE GASES FROM AGRICULTURAL SOILS INTEGRATED AGRICULTURAL SYSTEMS FOR THE NORTHERN GREAT PLAINS ECOLOGICALLY-SOUND PEST, WATER AND SOIL MANAGEMENT STRATEGIES FOR NORTHERN GREAT PLAINS CROPPING SYSTEMS MULTI-SCALE EVALUATION OF LAND USE MANAGEMENT SYSTEMS IN THE UPPER MIDWEST ENHANCED MIDWESTERN CROPPING SYSTEMS FOR SUSTAINABILITY AND ENVIRONMENTAL QUALITY DEVELOPMENT OF SUSTAINABLE PRODUCTION SYSTEMS AND WATER MANAGEMENT TECHNOLOGY FOR THE MID SOUTH DEVELOPMENT OF PRECISION AGRICULTURE SYSTEMS IN COTTON PRODUCTION PARTICULATE EMISSIONS FROM WIND EROSION: PROCESSES, ASSESSMENT, AND CONTROL COMBINED WATER QUALITY INITIATIVE APPLICATION OF REMOTE SENSING TECHNIQUES TO ADDRESS IMPACTS OF AGRICULTURE ON WATER QUALITY&FISH HABITAT WITHIN THE CHESAPEAKE BAY WATERSHED INTEGRATED WATER, SOIL, AGROCHEMICAL, AND CROP MANAGEMENT SYSTEMS FOR THE SUSTAINABLE PRODUCTION OF BIOFUELS IN HUMID ENVIRONMENTS CONSERVATION EFFECTS ASSESSMENT IN THE SOUTH GEORGIA LITTLE RIVER MANAGING DAIRY FARMS FOR ENVIRONMENTAL STEWARDSHIP AND PROFIT OPTIMIZING FORAGE-BASED COW-CALF OPERATIONS TO IMPROVE SUSTAINABILITY OF BEEF CATTLE AGRICULTURE AND WATER QUALITY PROTECTION AND MANAGEMENT INTEGRATED MANAGEMENT OF LAND AND WATER RESOURCES FOR ENVIRONMENTAL AND ECONOMIC SUSTAINABILITY IN THE NORTHEAST U.S. OBJECT MODELING AND SCALING OF LANDSCAPE PROCESSES AND CONSERVATION EFFECTS IN AGRICULTURAL SYSTEMS IMPROVED WATER RESOURCES MANAGEMENT FOR IRRIGATED AGRICULTURE IN THE PACIFIC NORTHWEST HYDROLOGIC AND ENVIRONMENTAL IMPACTS OF CONSERVATION PRACTICES IN OKLAHOMA AGRICULTURAL WATERSHEDS INTEGRATED HORTICULTURAL PRODUCTION SYSTEMS FOR WATER QUALITY PROTECTION AND WATER CONSERVATION EROSION PREDICTION TECHNOLOGY TO ENHANCE CONSERVATION PLANNING INTEGRATED ASSESSMENT AND ANALYSIS OF PHYSICAL LANDSCAPE PROCESSES THAT IMPACT THE QUALITY AND MANAGEMENT OF AGRICULTURAL WATERSHEDS EFFECTIVENESS OF WATERSHED LAND-MANAGEMENT PRACTICES TO IMPROVE WATER QUALITY OPTIMIZING IRRIGATION MANAGEMENT FOR HUMID CLIMATES WATER QUALITY IMPROVEMENT FROM MANAGEMENT PRACTICES IN AGRICULTURAL WATERSHEDS DEVELOPING TOOLS TO ENHANCE WATER QUALITY FROM AGRICULTURAL ENTERPRISES IN SOUTH FLORIDA ENHANCING WATER QUALITY FROM HORTICULTURAL AND FLORICULTURAL PRODUCTION SYSTEMS IN SOUTH FLORIDA IMPROVED KNOWLEDGE AND MODELING OF WATER FLOW AND CHEMICAL TRANSPORT PROCESSES IN IRRIGATED SOILS SOIL EROSION, SEDIMENT YIELD, CONSERVATION STRUCTURES, AND DSS FOR SUSTAINABLE LAND MANAGEMENT ON SEMIARID RANGELAND WATERSHED SNOW AND HYDROLOGIC PROCESSES IN THE INTERMOUNTAIN WEST REMOTE SENSING FOR CROP AND WATER MANAGEMENT IN IRRIGATED AGRICULTURE IRRIGATION MANAGEMENT AND AUTOMATION FOR INCREASED WATER USE EFFICIENCY ENGINEERING TOOLS FOR SAFE, EFFICIENT HYDRAULIC STRUCTURES AND CHANNELS REDUCING NITRATE LOSSES FROM AGRICULTURAL FIELDS WITH SUBSURFACE DRAINAGE REUSE OF TREATED MUNICIPAL WASTE WATER FOR IRRIGATION WATER MANAGEMENT IN ARID IRRIGATED AGRICULTURE COMMON MODULAR WIND AND WATER EROSION MODELING FOR CONSERVATION PLANNING MANAGING LIMITED IRRIGATION AND RAINFALL FOR CROP PRODUCTION IN SEMI-ARID ENVIRONMENTS SUSTAINING RURAL ECONOMIES THROUGH NEW WATER MANAGEMENT TECHNOLOGIES ENVIRONMENTAL AND SOURCE WATER QUALITY EFFECTS OF MANAGEMENT PRACTICES AND LAND USE ON POORLY DRAINED LAND MANAGEMENT AND TREATMENT OF DRAINAGE WATERS FOR WATER QUALITY PROTECTION AND SUSTAINABILITY OF AGRICULTURAL PRODUCTION IN THE MIDWEST U.S. WATER MANAGEMENT TO IMPROVE PRODUCTIVITY AND PROTECT WATER QUALITY SALINITY AND TRACE ELEMENT MANAGEMENT FOR CROP PRODUCTION IN IRRIGATED AGRICULTURAL SYSTEMS DEVELOPMENT OF ALTERNATIVE PRACTICES FOR IMPROVED WATERSHED MANAGEMENT CONSERVATION EFFECTS ASSESSMENT FOR THE ST. JOSEPH RIVER WATERSHED HYDROLOGIC PROCESSES, SCALE, CLIMATE VARIABILITY, AND WATER RESOURCES FOR SEMIARID WATERSHED MANAGEMENT SALINITY AND TRACE ELEMENTS ASSOCIATED WITH WATER REUSE IN IRRIGATED SYSTEMS: PROCESSES, SAMPLING PROTOCOLS, AND SITE-SPECIFIC MANAGEMENT UNDERSTANDING AND PREDICTING THE IMPACT OF AGRICULTURE ON THE ENVIRONMENTAL INTEGRITY OF MANAGED WATERSHEDS EFFICIENT AND ENVIRONMENTALLY SUSTAINABLE AGRICULTURAL WATER MANAGEMENT IN HUMID REGIONS DEVELOPMENT OF MODELS AND CONSERVATION PRACTICES FOR WATER QUALITY MANAGEMENT AND RESOURCE ASSESSMENTS LAND USE AND MANAGEMENT EFFECTS ON ENVIRONMENTAL PROCESSES AND HYDROLOGY IN COASTAL PLAIN WATERSHEDS USING REMOTE SENSING & MODELING FOR EVALUATING HYDROLOGIC FLUXES, STATES, & CONSTITUENT TRANSPORT PROCESSES WITHIN AGRICULTURAL LANDSCAPES INTEGRATION OF CLIMATE VARIABILITY AND FORECASTS INTO RISK-BASED MANAGEMENT TOOLS FOR AGRICULTURE PRODUCTION AND RESOURCE CONSERVATION USING REMOTE SENSING AND GIS FOR DETECTING AND MAPPING INVASIVE WEEDS IN RIPARIAN AND WETLAND ECOSYSTEMS CROP AND SOIL MANAGEMENT SYSTEMS FOR WATER QUALITY PROTECTION AND AGRICULTURAL SUSTAINABILITY BASIC RESEARCH ON SOIL-MICROBE RELATIONSHIPS IMPROVING SOIL AND NUTRIENT MANAGEMENT SYSTEMS FOR SUSTAINED PRODUCTIVITY AND ENVIRONMENTAL QUALITY MAINTAINING SOIL RESOURCES FOR EFFECTIVE CONSERVATION AND HERBICIDE MANAGEMENT IN MID-SOUTH CROP PRODUCTION SOIL CARBON CYCLING, TRACE GAS EMISSION, TILLAGE AND CROP RESIDUE MANAGEMENT BIOGEOCHEMICAL PROCESSES INFLUENCING FORMATION AND STABILIZATION OF SOIL ORGANIC MATTER AND SOIL STRUCTURE SOIL CONSERVATION SYSTEMS FOR SUSTAINABILITY OF PACIFIC NORTHWEST AGRICULTURE SOIL CONSERVATION SYSTEMS FOR SUSTAINABILITY OF PACIFIC NORTHWEST AGRICULTURE SOIL ORGANIC MATTER AND NUTRIENT CYCLING TO SUSTAIN AGRICULTURE IN THE SOUTHEASTERN USA FARMING PRACTICES FOR THE NORTHERN CORN BELT TO PROTECT SOIL RESOURCES, SUPPORT BIOFUEL PRODUCTION AND REDUCE GLOBAL WARMING POTENTIAL FACTORS CONTROLLING MICROBIAL TRANSFORMATION OF HERBICIDES, N FERTILIZERS, AND WEED SEEDS AS RELATED TO BIOLOGICALLY BASED WEED MANAGEMENT MANAGING BIOGEOCHEMICAL CYCLES AND RHIZOSPHERE ECOLOGY FOR SUSTAINABLE PRODUCTION OF APPALACHIAN PASTURE AND AMENITY GRASSES ASSESSING MANAGEMENT EFFECTS ON CROPS AND SOILS SOIL MANAGEMENT SYSTEMS FOR DRYLAND AND IRRIGATED CROPPING SYSTEMS SOIL RESPONSE TO CONSERVATION TILLAGE IN A COTTON-PEANUT ROTATION IMPROVING SOILS AND THEIR MANAGEMENT FOR MORE EFFICIENT WATER USE IN ENVIRONMENTALLY SUSTAINABLE AGRICULTURE DEVELOPMENT OF EFFICIENT AND PRACTICAL METHODS FOR PRODUCING ARBUSCULAR MYCORRHIZAL FUNGI QUANTIFYING LANDSCAPE FACTORS INFLUENCING SOIL PRODUCTIVITY AND THE ENVIRONMENT IMPROVING SOIL AND WATER MANAGEMENT PRACTICES IN CROPPING AND INTEGRATED CROP-LIVESTOCK SYSTEMS SOIL MANAGEMENT FOR SUSTAINABLE AGRICULTURAL SYSTEMS THAT PREVENT WIND EROSION AND ENHANCE THE ENVIRONMENT SOIL RESOURCE EVALUATION OF MANAGEMENT SYSTEMS TO ENHANCE AGROECOSYSTEM SUSTAINABILITY DEVELOP AND IMPROVE STRATEGIES FOR MANAGEMENT OF IRRIGATED AGRICULTURAL CROPS AND SOILS SYSTEMS AND TECHNOLOGIES FOR SUSTAINABLE SITE-SPECIFIC SOIL AND CROP MANAGEMENT DRYLAND CROPPING SYSTEMS MANAGEMENT FOR THE CENTRAL GREAT PLAINS PREDICTING THE IMPACT OF FLOOD CONTROL STRUCTURE FAILURES IMPACT OF SOIL RESOURCE MANAGEMENT ON SOIL BIOCHEMICAL AND CHEMICAL PROCESSES ASSESSING CLIMATE, SOIL AND LANDSCAPE PROCESSES AFFECTING AGRICULTURAL ECOSYSTEMS SOIL AND CROP MANAGEMENT SYSTEMS TO SUSTAIN AGRICULTURAL PRODUCTION AND ENVIRONMENTAL QUALITY IN THE NORTHERN GREAT PLAINS ECOLOGICALLY-BASED SOIL AND CROP MANAGEMENT SYSTEMS FOR SUSTAINABLE AGRICULTURE ECOLOGICALLY-BASED SOIL MANAGEMENT FOR SUSTAINABLE AGRICULTURE AND RESOURCE CONSERVATION CROP AND WEED RESPONSES TO INCREASING ATMOSPHERIC CARBON DIOXIDE IRRIGATION AND PRECISION MANAGEMENT STRATEGIES TO SUSTAIN AGRICULTURE WITH LIMITED WATER SUPPLIES DEVELOPMENT OF ACOUSTIC AND SEISMIC TECHNOLOGY TO CHARACTERIZE SOILS, SEDIMENT FLOW AND DEPOSITION, AND IMPOUNDMENT RESERVOIRS ECOLOGICAL, PHYSIOLOGICAL AND GENETIC ASPECTS OF GLOBAL CLIMATE CHANGE IMPACTS IN FIELD CROP SYSTEMS SOIL HYDROLOGY AND MANAGEMENT EFFECTS ON EROSION AND WATER QUALITY INTERACTIONS BETWEEN LAND USE, LAND MGMT, AND CLIMATE CHANGE: RELATIONS TO CARBON AND NITROGEN CYCLING, TRACE GASES AND AGROECOSYSTEMS GLOBAL CHANGE AND BELOWGROUND PROCESSES IN AGRICULTURAL SYSTEMS ENVIRONMENTAL EFFECTS ON PHYTOCHEMICALS IN FOOD CROPS: CONNECTING GLOBAL CHANGE AND HUMAN NUTRITION IMPACTS OF RISING ATMOSPHERIC CARBON DIOXIDE AND TEMPERATURE ON CROP GROWTH, REPRODUCTIVE PROCESSES, YIELD, AND SEED QUALITY PREDICTING INTERACTIVE EFFECTS OF CO2, TEMPERATURE, AND OTHER ENVIRONMENTAL FACTORS ON AGRICULTUAL PRODUCTIVITIY PROTECTING SURFACE AND GROUND WATERS IN EMERGING FARMING SYSTEMS OF THE NORTH CENTRAL UNITED STATES IMPACTS OF GLOBAL CHANGES AND BIOLOGICAL CONTROL OF INVASIVE WEEDS ON WESTERN RANGELANDS TRACE GAS EXCHANGES IN MIDWEST CROPPING SYSTEMS GLOBAL CHANGE: RESPONSES AND MANAGEMENT STRATEGIES FOR SEMI-ARID RANGELANDS MINIMIZING AIR & WATER CONTAMINATION FROM AGRICULTURAL PESTICIDES AIR QUALITY ASSOCIATED WITH AGRICULTURAL OPERATIONS (SDL) AIR QUALITY ISSUES RELATED TO AGRICULTURAL OPERATIONS AND PROCESSES GLOBAL CHANGE RESEARCH SUSTAINABLE CROPPING SYSTEMS FOR IRRIGATED SPECIALTY CROPS AND BIOFUELS Publications EXPLOITATION OF SPATIAL INFORMATION IN HIGH RESOLUTION DIGITAL IMAGERY FOR LEAF AREA INDEX MAPPING - (Peer Reviewed Journal) Walthall, C.L., Pachepsky, Y., Dulaney, W.P., Timlin, D.J., Daughtry, C.S.T. 2007. Exploitation of spatial information in high resolution digital imagery to map leaf area index. Precision Agriculture. 8(6):311-326. Remote Sensing of Agronomic Parameters: Scientific Advances - (Review Article) Hatfield, J.L., Gitelson, A.A., Schepers, J.S., Walthall, C.L. 2008. Remote Sensing of Agronomic Parameters: Scientific Advances. Agronomy Journal. 100:S117-S131. RADAR MONITORING OF WETLAND HYDROLOGY IN AN AGRICULTURAL WATERSHED: NEW INFORMATION FOR IMPROVED WATER QUALITY MANGEMENT IN THE CHOPTANK RIVER WATERSHED, MARYLAND - (Abstract) Lang, M.W., Walthall, C.L., Hively W.D. 2006. Radar monitoring of wetland hydrology in an agricultural watershed: New information for improved water quality management in the Choptank River Watershed, Maryland [abstract]. Soil and Water Conservation Society. p. 86. DETECTION OF ILLEGAL CANNABIS CULTIVATION USING REMOTE SENSING - (Proceedings/Symposium) Walthall, C.L., Daughtry, C.S., Vanderbilt, V., Pachepsky, L., Lydon, J., Erbe, E., Higgins, M., Bobbe, T. 2006. Detection of illegal cannabis cultivation using remote sensing. Proceedings of the International Geoscience and Remote Sensing Symposium, July 31-August 4, Denver, Colorado. 2006 CDROM. C-BAND RADAR MONITORING OF HYDROLOGY IN MID-ATLANTIC COASTAL PLAIN FORESTS: IMPLICATION FOR IMPROVED WATER QUALITY MANAGEMENT IN THE CHESAPEAKE BAY WATERSHED - (Abstract) Lang, M.W., Walthall, C.L. 2006. C-Band radar monitoring of hydrology in Mid-Atlantic Coastal Plain Forests: Implication for improved water quality management in the Chesapeake Bay Watershed [abstract]. Abs. 19, BARC Poster Day. USING RADAR TO MAP HYDROLOGY IN MID-ATLANTIC COASTAL PLAIN FORESTS: IMPLICATIONS FOR IMPROVED WATER QUALITY MANAGEMENT - (Abstract) Lang, M.W., Walthall, C.L. 2006. Using radar to map hydrology in Mid-Atlantic Coastal Plain Forests: Implications for improved water qualtiy management [abstract]. Conservation Effects Assessment Project (CEAP) Annual Meeting. Available: http://www.nrcs.usda.gov/technical/nri/ceap/watersheds/2006meeting.html. IMPROVING GLOBAL-SCALE LAND COVER CLASSIFICATIONS WITH MULTI-DIRECTIONAL VIEW- ANGLE DATA AND A DECISION TREE CLASSIFIER - (Peer Reviewed Journal) Brown de Colstoun, E., Walthall, C. 2006. Improving global-scale land cover classifications with multi-directional view-angle data and a decision tree classifier. Remote Sensing of Environment. 100:474-485. HIGH-RESOLUTION MULTISPECTRAL DIGITAL PHOTOGRAPHY USING UNMANNED AIRBORNE VEHICLES - (Proceedings/Symposium) Hunt, E.R., Walthall, C.L., Daughtry, C.S., Cavigelli, M.A., Fujikawa, S.J., Yoel, D.W., Ng, T.L., Tranchitella, M.C. 2006. High-resolution multispectral digital photograpy using unmanned airborne vehicles. In: Proceedings of the 20th Biennial Workshop on Aerial Photography, Videography and High Resolution Digital Imagery for Resource Assessment, October 4-6, 2005, Weslaco, Texas. 2006 CDROM. CHARACTERIZING LANDSCAPE COMPOSITION AND STRUCTURE WITH IMAGE TEXTURE PARAMETERS - (Abstract) Walthall, C.L., Pachepsky, L., Daughtry, C.S. 2005. Characterizing landscape composition and structure with image texture parameters [abstract]. Abstracts from American Geophysical Union Fall Conference. 2005 CDROM. AGRICULTURE REMOTE SENSING WITH MULTISPECTRAL DIGITAL PHOTOGRAPHY USING UNMANNED AIRBORNE VEHICLES - (Abstract) Hunt, E.R., Walthall, C.L., Daughtry, C.S., Fujikawa, S.J., Yoel, D., Khorrami, F., Tranchitella, M. 2005. Agriculture remote sensing with multispectral digital photography using unmanned airborne vehicles [abstract]. ASA-CSSA-SSSA Annual Meetings. 2005 CDROM. HIGH RESOLUTION MULTISPECTRAL DIGITAL PHOTOGRAPHY USING UNMANNED AIRBORNE VEHICLES. - (Abstract) Hunt, E.R., Walthall, C.L., Daughtry, C.S., Fujikawa, S.J., Yoel, D., Khorrami, F., Tranchitella, M. 2005. High resolution multispectral digital photography using unmanned airborne vehicles [abstract]. 20th Biennial workshop on Areal Photography, Videography, and High Resolution Digital Imagery for Resource Assessment. 2005 CDROM. EVALUATION OF AERIAL PHOTOGRAPHY FROM MODEL AIRCRAFT FOR REMOTE SENSING CROP BIOMASS AND NITROGEN STATUS - (Peer Reviewed Journal) Hunt, E.R., Cavigelli, M.A., Daughtry, C.S., McMurtrey, J.E., Walthall, C.L. 2005. Evaluation of aerial photography from model aircraft for remote sensing crop biomass and nitrogen status. Precision Agriculture. 6(4):359-378. TEXTURE ANALYSIS FOR CLASSIFICATION AND SEGMENTATION OF AIRBORNE IMAGES OF PLANT COVER - (Proceedings/Symposium) Walthall, C.L., Pachepsky, L., Daughtry, C.S. 2005. Texture analysis for classification and segmentation of airborne images of plant cover. In: Proceedings of the 2005 American Society for Photogrammetry and Remote Sensing Annual Conference, March 7-11, 2005, Baltimore, Maryland. I:180-191. SOYBEAN GROWTH AND DEVELOPMENT VISUALIZED WITH L-SYSTEMS SIMULATIONS: EFFECT OF TEMERATPURE - (Peer Reviewed Journal) Pachepsky, L., Kaul, M., Walthall, C., Lydon, J., Kong, H., Daughtry, C., 2005. Soybean growth and development visualized with L-systems simulations: Effects of temperature. International Journal of Biotronics. 33:31-47. ALTERNATIVE APPROACHES FOR ESTIMATING LEAF AREA INDEX (LAI) FROM REMOTELY SENSED SATELLITE AND AIRCRAFT IMAGERY - (Proceedings/Symposium) Walthall, C.L., Dulaney, W.P., Anderson, M., Norman, J., Fang, H., Liang, S., Timlin, D., Pachepsky, L. 2004. Alternative approaches for estimating leaf area index (LAI) from remotely sensed satellite and aircraft imagery. In: Proceedings of the SPIE International Symposium on Optical Science and Technology, August 2-6, 2004, Denver, Colorado. 5544: p. 241-255. ARTIFICIAL NEURAL NETWORKS FOR CORN AND SOYBEAN YELD PREDICTION - (Peer Reviewed Journal) - (28-Jul-04) ANALYSIS OF SURROGATE INDICATORS FOR EVIDENCE OF SUBSURFACE PREFERENTIAL FLOW PATHWAYS: IMPACT OF SUBSURFACE PREFERENTIAL FLOW ON VARIABLILITY OF NDVI - (Proceedings/Symposium) Walthall, C.L., Gish, T.J., Chinkuyu, A., Dulaney, W.P., Kaul, M.N., Daughtry, C.S. 2004. Analysis of surrogate indicators for evidence of subsurface preferential flow pathways: Impact of subsurface preferential flow on varibility of NDVI. In: Proceedings of the 2004 IEEE International Geoscience and Remote Sensing Symposium, September 20-24, 2004, Anchorage, Alaska. VI:3992-3995. A COMPARISON OF EMPIRICAL AND NEURAL NETWORK APPROACHES FOR ESTIMATING CORN AND SOYBEAN LEAF AREA INDEX FROM LANDSAT ETM+ IMAGERY - (Peer Reviewed Journal) Walthall, C., Dulaney, W., Anderson, M., Norman, J., Fang, H., Liang, S. 2004. A comparison of empirical and neural network approaches for estimating corn and soybean leaf area index from Landsat ETM+ imagery. Remote Sensing of the Environment. 92:465-474. QUANTIFYING IMPACT OF HYDROLOGY ON CORN GRAIN YIELD USING GROUND-PENETRATING RADAR - (Proceedings/Symposium) Gish, T.J., Daughtry, C.S.T., Walthall, C.L., Kung. K. 2004. Qualifying impact of hydrology on corn grain yield using ground-penetrating radar. In: Proceedings 10th International Conference on Ground-penetrating Radar, June 21-24, 2004, Delft, The Netherlands. 2:493-496. VEGETATION WATER CONTENT MAPPING USING LANDSAT DATA DERIVED NORMALIZED DIFFERENCE WATER INDEX (NDWI) FOR CORN AND SOYBEAN - (Peer Reviewed Journal) Jackson, T., Chen, D., Cosh, M., Li, F., Anderson, M., Walthall, C., Doraiswamy, P., Hunt, E.R. 2004. Vegetation water content mapping using Landsat data normalized difference water index (NDWI) for corn and soybean. Remote Sensing of Environment. 92(4):475-482. NEED AND FEASIBILITY OF APPLYING L-SYSTEM MODELS IN AGRICULTURAL CROP MODELING - (Proceedings/Symposium) Pachepsky, L., Kaul, M., Walthall, C., Daughtry, C., Lyndon, J. 2004. Need and feasibility of applying L-System models in agricultural crop modeling. In: Proceedings of Fractional 2004 Conference, April 3-8, 2004, Vancouver, Canada. p. 317-318. REMOTE SENSING IN BOREAS: LESSONS LEARNED - (Peer Reviewed Journal) Gamon, J., Huemmrich, K., Peddle, D., Chen, J., Fuentes, D., Hall, F., Kimball, J., Goetz, S., Gu, J., McDonald, K., Miller, J., Moghaddam, M., Rahman, A., Roujean, J.-L., Smith, E., Walthall, C.L., Zarco-Tejada, P., Hu, B., Fernandex, R., Cihlar, J. 2004. Remote sensing in BOREAS: Lessons learned. Remote Sensing of Environment. 89(20):139-162. REMOTE SENSING CROP BIOMASS USING RADIO CONTROLLED MODEL AIRCRAFT - (Abstract) Hunt, E.R., Cavigelli, M.A., Daughtry, C.L., Walthall, C.L. 2003. Remote sensing crop biomass using radio controlled model aircraft [abstract]. American Society of Agronomy Annual Meetings Abstracts [CDROM]. A03hunt827278-Poster. SOYBEAN GROWTH AND DEVELOPMENT VISUALIZED WITH L-SYSTEM SIMULATIONS:EFFECT OF TEMPERATURE - (Abstract) Pachepsky, L., Walthall, C.L., Kaul, M., Kong, H., Lyden, J., Daughtry, C.S. 2003. Soybean growth and development visualized with L-system simulations: Effect of temperature [CD-ROM]. Crop Science Society of America, Soil Science Society of America. Denver, Colorado: Agronomy Society of America. WALL - A MODEL OF LEAF TRANSPIRATION: ANALYSIS OF MECHANISMS AND VISUALIZATION - (Abstract) Pachepsky, Y.A., Walthall, C.L., Kaul, M., Daughtry, C.S. 2003. A model of transpiration: analysis of mechanisms and visualization [CD-ROM]. Crop Science Society of America, Soil Science Society of America. Denver, Colorado: Agronomy Society of America. WATERSHED-SCALE SENSING OF SUBSURFACE FLOW PATHWAYS AT OPE3 SITE - (Proceedings/Symposium) Gish, T.J., Walthall, C.L., Daughtry, C.S.T., Dulaney, W.P., McCarty, G.W. 2003. Watershed-scale sensing of subsurface flow pathways at OPE3 site. In: Proceedings of the First Interagency Conference on Research in the Watersheds, October 27-30, 2003, Benson, Arizona. p. 192-197. YIELD INDEX AND REMOTE SENSING TO CONFIRM WATERSHED SUBSURFACE FLOW PATHWAYS - (Peer Reviewed Journal) Gish, T.J., Walthall, C.L., Daughtry, C.S., Kung, S.J.S. 2005. Yield index and remote sensing to confirm watershed subsurface flow pathways. Journal of Environmental Quality. 34:275-286. WHAT DO WE KNOW ABOUT THE SPECTRAL SIGNATURES OF ILLEGAL CANNABIS CULTIVATION? - (Proceedings/Symposium) WALTHALL, C.L., DAUGHTRY, C.S., VANDERBILT, V., HIGGINS, M., BOBBE, T., LYDON, J., KAUL, M.N. 2003. WHAT DO WE KNOW ABOUT THE SPECTRAL SIGNATURES OF ILLEGAL CANNABIS CULTIVATION? PROCEEDINGS OF THE OFFICE OF NATIONAL DRUG CONTROL POLICY PROCEEDINGS. WATERSHED-SCALE SURFACE AND SUB-SURFACE REMOTE SENSING AT THE OPE3 SITE - (Abstract) Gish, T.J., Walthall, C.L., Daughtry, C.S., McCarty, G.W., Dulaney, W.P. 2003. Watershed-scale surface and sub-surface remote sensing at the OPE3 site. 1st Interagency Conference on Research in the Watershed. STATISTICAL COMPARISON OF MISR, ETM+ AND MODIS LAND SURFACE REFLECTANCES AND ALBEDO PRODUCTIONS OF THE BARC LAND VALIDATION CORE SITE, USA - (Peer Reviewed Journal) Fang, H., Liang, S., Chen, M., Walthall, C.L., Daughtry, C.S. 2003. Statistical comparison of MISR, ETM+ and MODIS land surface reflectances and albedo production of the BARC land validation core site, USA. International Journal of Remote Sensing. 25(2):409-422. ESTIMATION OF VEGETATION WATER CONTENT FOR CORN AND SOYBEANS WITH A NORMALIZED DIFFERENCE WATER INDEX (NDWI) USING LANDSAY THEMATIC MAPPER DATA - (Proceedings/Symposium) Chen, D., Jackson, T.J., Li, F., Cosh, M.H., Walthall, C.L., Anderson, M. 2003. Estimation of vegetation water content for corn and soybeans with a normalized difference water index (NDWI) using Landsat thermatic mapper data. International Geoscience and Remote Sensing Symposium Proceedings. IV:2853-2856. A PROTOCOL FOR DIFFERENTIATING HYDROLOGIC ZONES OF SOIL MOISTURE - (Abstract) Gish, T.J., Walthall, C.L., Daughtry, C.S., Prueger, J.H. 2003. A Protocol for Differentiating Hydrologic Zones of Soil Moisture [CD-ROM]. Crop Science Society of America, Soil Science Society of America. Denver, Colorado: Agronomy Society of America. USING SUBSURFACE STRATIGRAPHY TO DETERMINE SUBSURFACE WATER FLOW PATHWAYS - (Abstract) Gish, T.J., Daughtry, C.S., Walthall, C.L., McCarty, G.W., Angier, J. 2003. Using subsurface stratigraphy to determine subsurface water flow pathways [CD-ROM]. Crop Science Society of America, Soil Science Society of America. Denver, Colorado: Agronomy Society of America. ESTIMATION OF LAND SURFACE BROADBAND ALBEDOS AND LEAF AREA INDEX FROM EO-1 DATA AND VALIDATION - (Peer Reviewed Journal) Liang, S., Fang, H., Kaul, M., Van Niel, T., Mc Vicar, T., Walthall, C.L., Daughtry, C.S., Huemmrich, F. 2003. Estimation of land surface broadband albedos and leaf area index from EO-I data and validation. IEEE Transactions on Geoscience and Remote Sensing. 41(6):1260-1267. SPECTRAL VEGETATION INDEX RELATIONSHIPS WITH NORMALIZED YIELD MONITOR DATA - (Abstract) Walthall, C.L., Gish, T.J., Daughtry, C.S. 2003. Spectral vegetation index relationship with normalized yield monitor data [abstract]. In: Proceedings of IEEE International Geoscience and Remote Sensing Symposium, July 20-25, 2003, Toulouse, France. 2003 CDROM. USE OF SPATIAL VARIANCE INFORMATION FROM REMOTE SENSING IMAGERY TO MAP VEGETATION FOLIAGE DENSITY - (Abstract) WALTHALL, C.L., TIMLIN, D.J., PACHEPSKY, Y.A., DULANEY, W.P., DAUGHTRY, C.S. USE OF SPATIAL VARIANCE INFORMATION FROM REMOTE SENSING IMAGERY TO MAP VEGETATION FOLIAGE DENSITY. AMERICAN GEOPHYSICAL UNION. 2002. THE IMPACT OF CORN LEAF OPTICAL PROPERTIES ON IMAGE TONE - (Abstract) Walthall, C.L., Daughtry, C.S., Norman, J. The impact of corn leaf optical properties on image tone. In: Proceedings of American Society for Photogrammetry and Remote Sensing. COMPARING SMALL SCALE SPATIAL RELATIONSHIPS OF SURFACE SOIL WATER - (Abstract) Fisher, J., Timlin, D.J., Hill, R., Pachepsky, Y.A., Dulaney, W.P., Walthall, C.L. 2002. Comparing small scale spatial relationships of surface soil water. ASA-CSSA-SSSA Proceedings. LINKING WITHIN-FIELD CROP RESPONSE WITH SOIL CHARACTERISTICS - (Abstract) Kaul, M., Walthall, C.L., Pachepsky, Y.A., Timlin, D.J. 2002. Linking within-field crop response with soil characteristics [abstract]. In: Abstracts of Agronomy Socieity of America, Soil Science Society of America, Crop Science Society of America, Annual Meeting, November 10-15, 2002. Indianapolis, Indiana [CDROM]. A MIX OF SCALES: TOPOGRAPHIC INFORMATION, POINT SAMPLES AND YIELD MAPS - (Peer Reviewed Journal) TIMLIN, D.J., PACHEPSKY, Y.A., WALTHALL, C.L. A MIX OF SCALES: TOPOGRAPHIC INFORMATION, POINT SAMPLES AND YIELD MAPS. Bridging Scales in Soil Physics. 2003. A MIX OF SCALES: TOPOGRAPHIC INFORMATION, POINT SAMPLES AND YIELD MAPS - (Peer Reviewed Journal) Timlin, D.J., Pachepsky, Y.A., Walthall, C.L. 2003. A mix of scales: topographic information, point samples and yield maps. Bridging Scales in Soil Physics. p. 227-241. CORN LEAF CHLOROPHYLL STATUS FROM HYPERSPECTRAL IMAGES - (Abstract) Daughtry, C.S., Hunt, E.R., McMurtrey, J.E., Doraiswamy, P.C., Walthall, C.L., Gish, T.J. 2002. Corn leaf chlorophyll status from hyperspectral images [abstract]. American Society of Agronomy Meetings [CDROM]. REMOTE SENSING LEAF CHLOROPHYLL CONCENTRATION IN CORN FIELDS - (Abstract) Daughtry, C.S., Hunt, E.R., McMurtrey, J.E., Gish, T.J., Walthall, C.L., Remote sensing leaf chlorophyll concentration in corn fields [abstract]. International Conference on Precision Agriculture [CD ROM]. REMOTE SENSING USING RADIO-CONTROLLED MODEL AIRCRAFT AND AIRBORNE SENSORS FOR NUTRIENT MANAGEMENT - (Book/Chapter) Hunt, E.R., Daughtry, C.S., Walthall, C.L., McMurtrey, J.E., Dulaney, W.P. 2003. Agricultural remote sensing using radio-controlled model aircraft. In: Van Toai, T., Major, D., McDonald, M., Schepers, J., and Tarpley, L. editors. Digital Imaging and Spectral Techniques: Applications to Precision Agriculture and Crop Physiology. ASA Special Publication 66. Madison, WI: ASA-CSSA-SSSA. p. 191-199. DEVELOPMENT OF A SPECTRALLY BASED CANOPY PIGMENT INDEX FOR NITROGEN NEEDS IN CORN CROPS - (Abstract) McMurtrey, J.E., Daughtry, C.S., Doraiswamy, P.C., Walthall, C.L., Hunt, E.R., Corp, L.A. 2002. Development of spectrally based canopy pigment index for nitrogen needs in corn crops. In: Proceedings of the International Conference on Precision Agriculture. 1(1):1601. COMPARISON OF REMOTE SENSING IMAGERY FOR NITROGEN MANAGEMENT - (Proceedings/Symposium) Hunt, E.R., Daughtry, C.S., McMurtrey, J.E., Walthall, C.L., Baker, J.A., Schroeder, J.C., Liang, S. 2003. Comparison of remote sensing imagery for nitrogen management. In: P.C. Robert, editor. Proceedings of the Sixth International Conference on Precision Agriculture 2002. [CDROM]. ESTIMATING CORN GRAIN YIELD FROM TEMPORAL VARIATIONS OF SOIL MOISTURE - (Abstract) Gish, T., Buss, P., Daughtry, C.S.T., Dulaney, W.P., Walthall, C. 2002. Estimating corn grain yeild from temporal variations of soil moisture. In: Proceedings of 6th International Conference on Precision Agriculture and Other Precision Resource Mnagement Conference, July 14-17, 2002, Bloomington, Minnesota. p. 157. EXPLOITING IMAGE SPATIAL VARIANCE FOR VEGETATION PATTERNS - (Proceedings/Symposium) Walthall, C.L., Timlin, D.J., Pachepsky, Y.A., Dulaney, W.P., Daughtry, C.S., 2002. Exploiting image spatial variance for vegetatation patterns. In: Proceedings of American Society for Photogrammetry and Remote Sensing, November 12-14, 2002, Denver, Colorado, [CDROM]. Program Teams Water Quality and Management (201) Soil Resource Management (202) Air Quality (203) (leader) Global Change (204) (leader) Agricultural System Competitiveness and Sustainability Program (216) Water Availability and Watershed Management (211)         Last Modified: 11/04/2008 ARS Home | USDA.gov | Site Map | Policies and Links  FOIA | Accessibility Statement | Privacy Policy | Nondiscrimination Statement | Information Quality | USA.gov | White House