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United States Department of Agriculture

Agricultural Research Service

Related Topics

Jorge A Delgado
Soil Management and Sugarbeet Research
Soil Science

Phone: (970) 492-7260
Fax: (970) 492-7213

2150 CENTRE AVENUE
BUILDING D
FORT COLLINS , CO 80526

Projects
Management Practices to Mitigate Global Climate Change, Enhance Bioenergy Production, Increase Soil-C Stocks, and Sustain Soil Productivity and Water Quality
Appropriated (D)
  Accession Number: 427990
Long-Term Soil and Crop Management can be Used to Adapt to Climate Change by Increasing Soil Health, Nitrogen Use Efficiency, and Productivity
Specific Cooperative Agreement (S)
  Accession Number: 429392
Develop Knowledge for the Efficacy of Using Cover Crops in Place of Summer Fallow in Dryland Wheat-fallow Cropping
Specific Cooperative Agreement (S)
  Accession Number: 430157
Quantifying the Mechanisms of Soil C Sequestration and Loss in Agroecosystems
Specific Cooperative Agreement (S)
  Accession Number: 431324
New Approaches to Facilitate Non-chemical Control of Plant Pathogenic Nematodes in Potato Systems, and Improvement of Nitrogen Management
Specific Cooperative Agreement (S)
  Accession Number: 431340
USDA Agri and Forestry Greenhouse Gas Invent and Evaluate the Potential of Different Cropping Systems, including Biofuels, to Mitigate GHG Emissions
Specific Cooperative Agreement (S)
  Accession Number: 426744

Publications (Clicking on the reprint icon Reprint Icon will take you to the publication reprint.)
Nitrogen Index -
Delgado, J.A. 2016. Nitrogen Index. Encyclopedia of Soil Science. Third Edition. CRC Press. doi:10.1081/E-ESS3-120053861.
Nutrient management -
Delgado, J.A. 2016. Nutrient management. Encyclopedia of Soil Science. Third edition. CRC Press. doi:10.1081/E-ESS3-120053859.
Cover Crops -
Delgado, J.A. 2016. Cover Crops. Encyclopedia of Soil Science. Third Edition. CRC Press. doi:10.1081/E-ESS3-120054071.
Emerging and established technologies to increase nitrogen use efficiency of cereals -
Herrera, J., Rubio, G., Levy, L., Delgado, J.A., Lucho-Constantino, C., Islas-Valdez, S., Pellet, D. 2016. Emerging and established technologies to increase nitrogen use efficiency of cereals. Agronomy. 6(2):25. doi:10.3390./agronomy6020025.
The Nanchang communication about the potential for the implementation of conservation practices for climate change mitigation and adaptation to achieve food security in the 21st century -
Delgado, J.A., Li, R. 2016. The Nanchang communication about the potential for the implementation of conservation practices for climate change mitigation and adaptation to achieve food security in the 21st century. International Soil and Water Conservation Research. 4:148-150. doi:10.1016/j.iswcr.2016.05.002.
myPhyloDB: a local web server for the storage and analysis of metagenomics data -
Manter, D.K., Korsa, M.S., Tebbe, C.R., Delgado, J.A. 2016. myPhyloDB: a local web server for the storage and analysis of metagenomics data. Database: The Journal of Biological Databases and Curation. doi:10.1093/database/baw37.
A nitrogen index for improving nutrient management within commercial Mexican dairy operations -
Figueroa-Viramontes, U., Delgado, J.A., Sanchez-Duarte, J., Ochoa-Martinez, E., Nunez-Hernandez, G. 2016. A nitrogen index for improving nutrient management within commercial Mexican dairy operations. International Soil and Water Conservation Research. 4(1):1-5. doi:10.1016/j.iswcr.2016.02.005.
The 4Rs for cover crops and other advances in cover crop management for environmental quality -
Delgado, J.A., Gantzer, C.J. 2015. The 4Rs for cover crops and other advances in cover crop management for environmental quality. Journal of Soil and Water Conservation. 70(6):142A-145A. doi:10.2489/jswc.70.6.142A.
Conservation strategies to adapt to projected climate change impacts in Malawi -
Kambauwa, G., Mlamba, J., Delgado, J.A., Kabambe, V. 2015. Conservation strategies to adapt to projected climate change impacts in Malawi. Journal of Soil and Water Conservation. 70:109A-114A. doi:10.2489/jswc.70.5.109A.
ARS NP212 Climate change, soils and emissions program update -
Silva, P.J., Sistani, K.R., Delgado, J.A., Walthall, C.L., Del Grosso, S.J. 2015. ARS NP212 Climate change, soils and emissions program update. Meeting Abstract. Abstract.
Use of the new Nitrogen Index tier zero to assess the effects of nitrogen fertilizer on N2O emissions from cropping systems in Mexico -
Saynes, V., Delgado, J.A., Tebbe, C., Etchevers, J.D., Lapidus, D., Otero-Arnaiz, A. 2014. Use of the new Nitrogen Index tier zero to assess the effects of nitrogen fertilizer on N2O emissions from cropping systems in Mexico. Ecological Engineering. 73:778-785.
4 Rs are not enough: We need 7 Rs for nutrient management and conservation to increase nutrient use efficiency and reduce off-site transport of nutrients -
Delgado, J.A. 2016. 4 Rs are not enough: We need 7 Rs for nutrient management and conservation to increase nutrient use efficiency and reduce off-site transport of nutrients. In: Lal, R., Stewart, B.A., editors. Soil Specific Farming: Precision Agriculture. Advances in Soil Science series. Boca Raton, FL: CRC Press. p. 89-126.
A new index to assess nitrogen dynamics in potato (Solanum tuberosum L.) production systems of Bolivia -
Saavedra, A., Delgado, J.A., Botello, R., Mamani, P., Alwang, J. 2014. A new index to assess nitrogen dynamics in potato (Solanum tuberosum L.) production systems of Bolivia. Agrociencia. Agrociencia 48: 667-678.
A new nitrogen index for assessment of nitrogen management practices of Andean Mountain cropping systems of Ecuador -
Escudero, L., Delgado, J.A., Monar, C., Valverde, F., Barrera, V., Alwang, J. 2014. A new nitrogen index for assessment of nitrogen management practices of Andean Mountain cropping systems of Ecuador. Soil Science. 179:130-140.
Conservation practices for climate change mitigation and adaptation will be needed for food security in the 21st century -
Delgado, J.A. 2014. Conservation practices for climate change mitigation and adaptation will be needed for food security in the 21st century. European Soil Conservation Society. Vol 20.
Annual precipitation and effects of runoff-nutrient from agricultural watersheds on water quality -
Elrashidi, M., Seybold, C., Delgado, J.A. 2014. Annual precipitation and effects of runoff-nutrient from agricultural watersheds on water quality. Soil Science. 178:679-688.
Climate change, agricultural adaptation and mitigation, and using the nitrogen index to increase nitrogen use efficiency -
Development and testing of a new phosphorus index for Kentucky -
Bolster, C.H., Horvath, T., Lee, B., Mehlhope, S., Higgins, S.F., Delgado, J.A. 2014. Development and testing of a new phosphorus index for Kentucky. Journal of Soil and Water Conservation. 69(3):183-196.
The nitrogen index as a tool to reduce nitrogen loss to the environment -
Cover crops alter the soil microbial community and increase potato tuber yield and quality -
Manter, D.K., Delgado, J.A., Dillon, M., Essah, S. 2013. Cover crops alter the soil microbial community and increase potato tuber yield and quality. American Society of Agronomy Abstracts. 1.
Revising the phosphorus index for Kentucky -
Bolster, C.H., Horvath, T., Lee, B., Mehlhope, S., Higgins, S.F., Delgado, J.A. 2013. Revising the phosphorus index for Kentucky. ASA-CSSA-SSSA Annual Meeting Abstracts. Abstract.
Conservation practices for climate change -
Delgado, J.A., Nearing, M.A., Rice, C. 2013. Conservation practices for climate change. Advances in Agronomy. 121:47-115.
Modeling landscape-scale nitrogen management for conservation -
Ascough II, J.C., Delgado, J.A. 2015. Modeling landscape-scale nitrogen management for conservation. In: GIS Applications in Agriculture, Volume Four, Conservation Planning, T. Mueller and G.F. Sassenrath (Eds.). CRC Press, Boca Raton, FL. pp. 101–118. doi:10.1201/b18173-8.
The implementation of the new Kentucky nitrogen and phosphorus index to reduce agricultural nonpoint source pollution -
Horvath, T., Bolster, C.H., Delgado, J.A. 2013. The implementation of the new Kentucky nitrogen and phosphorus index to reduce agricultural nonpoint source pollution. Kentucky Water Resources Research Institute Symposium. Presentation.
Development and testing of a new phosphorus index for Kentucky -
Bolster, C.H., Mehlhope, S., Horvath, T., Delgado, J.A., Higgins, S.F., Coffey, R.D., Coleman, S., Goodman, P., Lee, B., Renfro, C., Ritchey, E.L. 2013. Development and testing of a new phosphorus index for Kentucky. Kentucky Water Resources Research Institute Symposium. Abstract.
Positive impacts in soil and water conservation in an Andean region of South America: Case scenarios from a USAID multidisciplinary cooperative project -
Monar, C., Saavedra, A., Escudero, L., Delgado, J.A., Alwang, J., Barrera, V., Botello, R. 2013. Positive impacts in soil and water conservation in an Andean region of South America: Case scenarios from a USAID multidisciplinary cooperative project. Journal of Soil and Water Conservation. 68:25A-30A.
The first nitrogen index app for mobile devices: using portable technology for smart agricultural management -
Delgado, J.A., Kowalski, K.D., Tebbe, C.R. 2013. The first nitrogen index app for mobile devices: using portable technology for smart agricultural management. Computers and Electronics in Agriculture. 91:121-123.
Cost effectiveness of on- and off-field conservation practices designed to reduce nitrogen in downstream water -
Hansen, L., Delgado, J.A., Ribaudo, M., Crumpton, W. 2012. Cost effectiveness of on- and off-field conservation practices designed to reduce nitrogen in downstream water. Journal of Environmental Economics and Management. 67:162A-166A.
Adapting agriculture to drought and extreme events -
Lal, R., Delgado, J.A., Nielsen, D.C., Rice, C., Van Pelt, R.S. 2012. Adapting agriculture to drought and extreme events. Journal of Soil and Water Conservation. 67:162A-166A.
Climate Change and Agriculture: Effects and Adaptation -
Walthall, C.L., Hatfield, J.L., Marshall, E., Lengnick, L., Backlund, P., Adkins, S.T., Ainsworth, E.A., Booker, F.L., Blumenthal, D.M., Bunce, J.A., Burkey, K.O., Dabney, S.M., Goodrich, D.C., Lewers, K.S., Nearing, M.A., Ort, D.R., Pettigrew, W.T., Polley, H.W., Rosskopf, E.N., Srygley, R.B., Ziska, L.H., Delgado, J.A., Funk, A.J., Glenn, D.M., Morgan, J.A., White, J.W., Timlin, D.J., Mcclung, A.M. 2013. Climate Change and Agriculture: Effects and Adaption. Washington, DC: USDA Technical Bulletin 1935. 186 p.
Effects of cover crops on the microbial community and its ability to suppress disease and acquire nutrients -
Barnett, B.A., Delgado, J.A., Manter, D.K. 2012. Effects of cover crops on the microbial community and its ability to suppress disease and acquire nutrients. Potato Association of America Proceedings. p. 10.
Nitrogen trading tool -
Delgado, J.A. 2012. Nitrogen trading tool. In: Sven Erik Jorgensen Editor.Encyclopedia of Environmental Management. New York, NY: CRC Press Taylor & Francis Group. P. 1772-1784.
Cover crops can improve potato tuber yield and quality -
Essah, S., Delgado, J.A., Dillon, M., Sparks, R. 2012. Cover crops can improve potato tuber yield and quality. HortTechnology. 22:185-190.
Best Nitrogen Management Practices Can Reduce the Potential Flux of Nitrogen Out of the Arkansas Delta -
Shumway, C., Delgado, J.A., Bunch, T., Hansen, L., Rubaudo, M. 2012. Best Nitrogen Management Practices Can Reduce the Potential Flux of Nitrogen Out of the Arkansas Delta. Soil Science. 177:198-209.
Recent advances in precision (Target) conservation -
Delgado, J.A., Khosla, R., Mueller, T. 2011. Recent advances in precision (Target) conservation. Journal of Soil and Water Conservation Society. 66:167A-170A.
The AgES-NLEAP tool for precision nitrogen conservation management -
Ascough II, J.C., Delgado, J.A. 2011. The AgES-NLEAP tool for precision nitrogen conservation management. Soil and Water Conservation Annual Meeting, July 17-20, 2011, Washington, D.C. p.13.
A new nitrogen index to elvaluate nitrogen losses in intensive forage systems in Mexico -
Figueroa-Viramontes1, U., Delgado, J.A., Cueto-Wong, J., Núñez-Hernández, G., Reta-Sanchez1, D., Barbarick, K. 2011. A new nitrogen index to elvaluate nitrogen losses in intensive forage systems in Mexico. Agriculture, Ecosystems and Environment. 142:352-364.
Soil management to mitigate climate change -
Lal, R., Delgado, J.A., Salon, P.R., Dell, C.J., Groffman, P., Miller, N., Rotz, C.A. 2011. Soil management to mitigate climate change. Journal of Soil and Water Conservation. 66(1):276-285.
Nitrogen Leaching Index -
Delgado, J.A. 2012. Nitrogen Leaching Index. In: Sven Erik Jorgensen, Editor. Encyclopedia of Environmental Management. New York, NY: CRC Press Taylor & Francis Group. P. 1761-1767.
Preliminary assessment of the potential for nitrous oxide offsets in a cap and trade program -
Ribaudo, M., Delgado, J.A., Livingston, M. 2011. Preliminary assessment of the potential for nitrous oxide offsets in a cap and trade program. Journal of Agricultural and Resource Economics. 40:1 - 6.
Conservation practices to mitigate and adapt to the effects of climate change -
Delgado, J.A., Secchi, S., Groffman, P., Nearing, M.A., Goddard, T., Reicocky, D., Lal, R., Salon, P., Kitchen, N.R., Rice, C., Towery, D. 2011. Conservation practices to mitigate and adapt to the effects of climate change. Journal of Soil and Water Conservation Society. 66(a):118A-129A.
Conservation Practices to Mitigate and Adapt to Climate Change. Poster Demonstration -
Delgado, J.A., Groffman, P., Nearing, M.A., Goddard, T., Reicosky, D., Lal, R., Kitchen, N.R., Rice, C., Towery, D. 2011. Conservation Practices to Mitigate and Adapt to Climate Change. Poster Demonstration. Soil Science Society of America Annual Meeting. p. 1.
A GIS Assessment to Identify and Reduce Nitrate Loads that Contribute to Hypoxia in the Gulf of Mexico -
Accumulation of late-applied nitrogen and root dynamics during grain filling in irrigated spring wheat -
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.
Conservation Practices to Mitigate and Adapt to Climate Change. Poster Demonstration -
Delgado, J.A., Groffman, P., Nearing, M.A., Goddard, T., Reicosky, D., Lal, R., Kitchen, N.R., Rice, C., Towery, D. 2011. Conservation Practices to Mitigate and Adapt to Climate Change. Poster Demonstration. Soil and Water Conservation Society. p. 1.
Advances in Nitrogen Management for Water Quality -
Delgado, J.A., Follett, R.F. 2011. Advances in Nitrogen Management for Water Quality. Journal of Soil and Water Conservation. 66(1):25A-26A.
Nitrogen in agricultural systems: Implications for conservation policy -
Ribaudo, M., Delgado, J.A., Hansen, L., Livingston, M., Mosheim, R., Williamson, J. 2011. Nitrogen in agricultural systems: Implications for conservation policy. United States Department of Agriculture Economic Research Service Proceedings. 1.
Drainage water management for water quality protection -
Strock, J., Kleinman, P.J., King, K.W., Delgado, J.A. 2010. Drainage water management for water quality protection. Journal of Soil and Water Conservation. 65(6):131A-136A.
Crop residue is key for sustaining maximum food production and for conservation of our biosphere -
Delgado, J.A. 2010. Crop residue is key for sustaining maximum food production and for conservation of our biosphere. Journal of Soil and Water Conservation. 65:111A-116A.
Chapter 14. New tools to assess nitrogen management for conservation of our biosphere -
Delgado, J.A., Gagliardi, P.M., Shaffer, M.J., Cover, H., Hesketh, E. 2010. Chapter 14. New tools to assess nitrogen management for conservation of our biosphere. p. 373-409. In Delgado, J.A. and R.F. Follett (eds). Advances in Nitrogen Management for Water Quality. SWCS, Ankeny, IA.
Advances in nitrogen management for water quality -
Delgado, J.A., Follett, R.F. (eds) 2010. Advances in nitrogen management for water quality. Soil and Water Conservation Society. pp. 1-424.
Chapter 15. A tiered approach to nitrogen management: A USDA perspective -
Gross, C., Delgado, J.A., Shaffer, M., Gasseling, D., Bunch, T., Fry, R. 2010. Chapter 15. A tiered approach to nitrogen management: A USDA perspective. p. 410-424. In Delgado, J.A. and R.F. Follett (eds) Advances in Nitrogen Management for Water Quality. SWCS, Ankeny, IA.
Using cover crops and cropping systems for nitrogen management -
Dabney, S.M., Meisinger, J.J., Schomberg, H.H., Liebig, M.A., Kaspar, T.C., Delgado, J.A., Mitchell, J., Reeves, D.W. 2010. Using cover crops and cropping systems for nitrogen management. p. 230-281. In Delgado, J.A. and R.F. Follett (eds) Advances in Nitrogen Management for Water Quality, Ankeny, IA.
Pyrosequencing reveals a highly diverse and cultivar-specific bacterial endophyte community in plant roots -
Manter, D.K., Delgado, J.A., Holm, D., Stong, R.A. 2010. Pyrosequencing reveals a highly diverse and cultivar-specific bacterial endophyte community in plant roots. Microbial Ecology. 60:157-166.
A NEW GIS NITROGEN TRADING TOOL CONCEPT FOR CONSERVATION AND REDUCTION OF REACTIVE NITROGEN LOSSES TO THE ENVIRONMENT -
Delgado, J.A., Gross, C., Lal, H., Cover, H., Gagliardi, P., Mckinney, S., Hesketh, E., Shaffer, M. 2010. A NEW GIS NITROGEN TRADING TOOL CONCEPT FOR CONSERVATION AND REDUCTION OF REACTIVE NITROGEN LOSSES TO THE ENVIRONMENT. Advances in Agronomy. 105:117-171.
Chlorophyll Meter SPAD-502 Calibration to Evaluate Nitrogen Requirements in Forage Corn -
Torres, A., Viramontes, U., Delgado, J.A., Hernandez, G., Cueto-Wong, J., Gil, A., Rangel, P. 2009. Chlorophyll Meter SPAD-502 Calibration to Evaluate Nitrogen Requirements in Forage Corn. Terra Latinoamerica. 27:303-309.
Calculation of Manure Production and Excretion of Nitrogen, Phosphorous and Potassium by Dairy Cattle in the Comarca Lagunera -
Viramontes, U., Hernandez, G., Delgado, J.A., Cueto-Wong, J. 2009. Calculation of Manure Production and Excretion of Nitrogen, Phosphorous and Potassium by Dairy Cattle in the Comarca Lagunera. Terra Latinoamerica. p. 128-151.
15N Isotopic Crop Exchange Residue Studies Suggest that IPCC N Input Methodologies to Assess N2O-N Emissions Should be Reevaluated -
Delgado, J.A., Del Grosso, S.J., Ogle, S. 2009. 15N Isotopic Crop Exchange Residue Studies Suggest that IPCC N Input Methodologies to Assess N2O-N Emissions Should be Reevaluated. Nutrient Cycling in Agroecosystems. (doi:10.1007/s10705-009-9300-9).
Nutrient Credit Trading--a Market-based Approach for Improving Water Quality -
Lal, H., Delgado, J.A., Gross, C., Mckinney, S., Cover, H., Shaffer, M.J., Hesketh, E. 2009. Nutrient Credit Trading--a Market-based Approach for Improving Water Quality. Environmenetal Science and Policy. (doi:10.1016/j.envsci.2009.05.003).
Adaptive Management Tools for Nitrogen: Nitrogen Index, Nitrogen Trading Tool and Nitrogen Losses Environmental Assessment Package (NLEAP-GIS) -
Delgado, J.A., Gross, C., Lal, H., Cover, H., Fry, P., Gagliardi, P., Mckinney, S., Shaffer, M. 2009. Adaptive Management Tools for Nitrogen: Nitrogen Index, Nitrogen Trading Tool and Nitrogen Losses Environmental Assessment Package (NLEAP-GIS). Soil and Water Conservation Society.
Bias in IPCC Methodologies for Assessment of N2O emissions from Crop Residue -
Delgado, J.A., Del Grosso, S.J., Ogle, S. 2009. Bias in IPCC Methodologies for Assessment of N2O emissions from Crop Residue. Soil Science Society of America Annual Meeting.
A NEW NITROGEN INDEX: An Adaptive Management Tool for Reducing Nitrogen Losses to the Environment from Mexican Forage Production Systems -
Figueroa, V.U., Delgado, J.A., Cueto-Wong, J., Nunez, H.G., Reta, D.G., Fry, R., Barbarick, K., Gagliardi, P., Gross, C. 2009. A NEW NITROGEN INDEX: An Adaptive Management Tool for Reducing Nitrogen Losses to the Environment from Mexican Forage Production Systems. Soil and Water Conservation Society.
Use of 15N labeled Urea to Study Nitrogen Use Efficiencies in a Forage Corn-Oat Rotation Grown on Clay and Sandy Clay Loam Soils of Mexico -
Cueto-Wong, J., Delgado, J.A., Figueroa, U.V., Quiroga-Garza, H.M., Trucios-Casiano, R. 2009. Use of 15N labeled Urea to Study Nitrogen Use Efficiencies in a Forage Corn-Oat Rotation Grown on Clay and Sandy Clay Loam Soils of Mexico. Soil and Water Conservation Society.
Adaptive management and the USDA-NRCS Nutrient Management (590) conservation practice standard -
Gross, C., Delgado, J.A., Morris, T., Kuenstler, W., Lemunyon, J., Widman, N. 2009. Adaptive management and the USDA-NRCS Nutrient Management (590) conservation practice standard. Soil and Water Conservation Society.
NLEAP-GIS Modeling in a Mediterranean Region of Spain -
De Paz, J.M., Albert, C., Delgado, J.A. 2009. NLEAP-GIS Modeling in a Mediterranean Region of Spain. Nitrogen Workshop. "Connecting Different Scales of Nitrogen Use in Agriculture". Grignani C., Acutis M, Zavattaro L., Bechini L., Bertota C., Gallina P., Sacco D (edds). Turin, Italy, June 28-July 1, 2009.
15N Uptake from Manure and Fertilizer Sousrces by Three Consecutive Crops Under Controlled Conditions. -
Quiroga-Garza, H.M., Cueto-Wong, J.A., Lindemann, W.C., Delgado, J.A. 2009. 15N Uptake from Manure and Fertilizer Sousrces by Three Consecutive Crops Under Controlled Conditions. Brazilian Journal of Soil Science. 33:1249-1258.
California Nitrogen Index -
Delgado, J.A., Gagliardi, P., Rau, E.J., Fry, R., Figueroa, U., Gross, C., Cueto-Wong, J., Shaffer, M.J. 2009. California Nitrogen Index. Government Publication/Report. (USDA-ARS-SPNR and NRCS User Manual).
Use of a new GIS nitrogen index assessment tool for evaluation of nitrate leaching across a Mediterranean Region -
De Paz, J., Delgado, J.A., Ramos, C., Shaffer, M., Barbarick, K. 2009. Use of a new GIS Nitrogen Index Assessment Tool for Evaluation of Nitrate Leaching Across a Mediterranean Region. Agriculture Ecosystems and the Environment. 365:183-194.
Ecologically sustainable development in dairy farms II: Nutrient cycling -
Viramontes, U., Hernandez, G., Delgado, J.A., Wong, J., Avalos, J. 2008. Ecologically sustainable development in dairy farms II: Nutrient cycling. Paper presented in the FIL-IDF World Dairy Summit and Exhibition, Nov. 11-14-2008, Mexico City, MX. http://www/wds2008mexico.com/wds-conf/
A New GIS-Nitrogen Trading Tool Concept to Minimize Reactive Nitrogen losses to the Environment -
Communicating Conservation Effects Assessment Project Results -
Delgado, J.A., Anderson-Wik, M. 2008. Communicating Conservation Effects Assessment Project Results. Journal of Soil and Water Conservation. 63:176A-177.
A Response to Sustainable Crop Production in a Region Facing a Decline in Groundwater Aquifer Levels -
New Advances and Practices for Precision Conservation -
Delgado, J.A., Berry, J., Khosla, R. 2008. New Advances and Practices for Precision Conservation. 9th International Symposium on Precision Agriculture. ASA Madison, WI. (CD-ROM).
Integrated nitrogen management. -
Herrera, J., Delgado, J.A. 2010. Integrated nitrogen management. Soil and Water Conservation Society. p. 94-127. In Delgado, J.A. and R.F. Follett (eds). Advances in Nitrogen Management for Water Quality. SWCS, Ankeny, IA.
Assessment of nitrogen losses to the environment with a Nitrogen Trading Tool (NTT) -
Delgado, J.A., Shaffer, M.J., Lal, H., Mckinney, S., Cross, C., Cover, H. 2008. Assessment of nitrogen losses to the environment with a Nitrogen Trading Tool (NTT). Computers and Electronics in Agriculture. 63:193-206.
Sustainable Cover Crop Rotations with Potential to Improve Yields, Crop Quality, and Nutrient and Water Use Efficiencies- -
Delgado, J.A., Essah, S., Dillon, M., Ingham, R., Manter, D.K., Stuebe, A., Sparks, R. 2008. Sustainable Cover Crop Rotations with Potential to Improve Yields, Crop Quality, and Nutrient and Water Use Efficiencies-. Soil and Water Conservation Society Proceedings.
Precision Farming and Conservation Advances Agricultural Sustainability -
Berry, J., Delgado, J.A., Khosla, R. 2008. Precision Farming and Conservation Advances Agricultural Sustainability. World Wide Web. http://vector1media.com/article/feature/precision-farming-advances-agriculltural-sustainability/
New Advances and Practices for Precision Conservation. -
Delgado, J.A., Khosla, R., Berry, J. 2008. New Advances and Practices for Precision Conservation. Proc. of the Conference on Precision Agriculture in Denver, CO in 2008.
Nitrogen Trading Tool (NTT) -
Cross, C., Mckinney, S., Lal, H., Cover, H., Delgado, J.A., Shaffer, M. 2008. Nitrogen Trading Tool (NTT). Journal of Soil and Water Conservation 63: 44A-45A.
ADVANCES IN PRECISION CONSERVATION -
Delgado, J.A., Berry, J. 2008. Advances in precision conservation. Advances in Agronomy 98: 1-44.
Simulation processes for the nitrogen loss and environmental assessment package (NLEAP). -
Shaffer, M.J., Delgado, J.A., Cross, C., Follett, R.F. 2010. Simulation Processes for the processes for the nitrogen loss and environmental assessment package (NLEAP). Soil and Water Conservation Society. p. 361-372. In Delgado, J.A. and R.F. Follett (eds) Advances in Nitrogen Management for Water Quality, SWCS, Ankeny, IA.
Evaluation of best nitrogen management practices across regions of Argentina and Spain -
Lavado, R., De Paz, J., Delgado, J.A., Rimski-Korsakov, H. 2010. Evaluation of best nitrogen management practices across regions of Argentina and Spain. p. 313-342. Delgado, J.A. and R.F. Follett (eds). Advances in Nitrogen Management for Water Quality. SWCS, Ankeny, IA.
An index approach to assess nitrogen losses to the environment -
Delgado, J.A., Shaffer, M.J., Hu, C., Lavado, R., Wong, J.C., Joosse, P., Li, X., Rimski-Korasako, H., Follett, R.F., Del Grosso, S.J., Colon, W., Sotomayor, D. 2008. An index approach to assess nitrogen losses to the environment. Journal of Ecological Engineering 32: 108-120.
A New Weighing Method to Measure Shoot Water Interception -
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.
Nitrogen Management Modeling Techniques: Assessing Cropping Systems/Landscape Combinations. -
Delgado, J.A., Shaffer, M.J. Nitrogen Management Modeling Techniques: Assessing Cropping Systems/Landscape Combinations. Book Chapter In R.F. Follett and J.L. Hatfield (eds) Nitrogen in the Environment: Sousrces, Problems and Management. pp. 539-570. Elsevier Science, New York, USA.
A Decade of Advances in Cover Crops: Cover Crops with Limited Irrigation can Increased Yields, Crop Quality, Nutrient and Water Use Efficiencies While Protecting the Environment -
Delgado, J.A., Dillon, M., Sparks, R., Essah, S. 2007. A decade of advances in cover crops: cover crops with limited irrigation can increased yields, crop quality, nutrient and water use efficiencies while protecting the environment. Journal of Soil and Water Conservation. 62:110A-117A.
Assessment of Delta Nitrogen Losses (Delta NL) at the Field Level -
Delgado, J.A., Shaffer, M.J., Lal, H., Mckinney, S. 2007. Assessment of Delta Nitrogen Losses (Delta NL) at the Field Level. ASA, CSSA, SSSA Annual Meeting, New Orleans, LA Nov. 4-8-20076. CD-ROM. . ASA-CSSA-SSSA Annual Meeting Abstracts.
Managing Cover Crops in Conservation Tillage Systems -
Balkcom, K.S., Schomberg, H.H., Reeves, D.W., Clark, A., Baumhardt, R.L., Collins, H.P., Delgado, J.A., Kaspar, T.C., Mitchell, J., Duiker, S. 2007. Managing Cover Crops in Conservation Tillage Systems. In: Clark, A. Managing Cover Crops Profitability. 3rd edition. Handbook Series Book 9. Sustainable Agriculture Network. p. 44-61.
Testing of a Nitrogen Index to Assess N Management Practices With GIS To Identify High-Risk Cropping System/Landscape Combinations -
Delgado, J.A., Shaffer, M.J. 2007. Testing of a Nitrogen Index to Assess N Management Practices With GIS. Abstract. p. 111. Soil and Water Conservation Society Annual Meeting, Tampa, FL 07-21-25-2007. To Identify High-Risk Cropping System/Landscape Combinations. Soil and Water Conservation Society Proceedings.
Nitrogen Management for Maximizing Potato Yield, Tuber Quality, and Environmental Conservation -
Essah, S., Delgado, J.A. 2009. Nitrogen Management for Maximizing Potato Yield, Tuber Quality, and Environmental Conservation. p. 317-325. E.K. Yanful (ed) Appropriate Technologies for Environmental Protection in the Developing World. Springer, The Netherlands.
Assessment of mineral nitrogen dynamic and its concentration in the soil profile with the updated NLEAP V.2 model: A case study in South Central Bulgaria -
Anguelov, G., Delgado, J.A., Shaffer, M.J. 2007. Assessment of mineral nitrogen dynamic and its concentration in the soil profile with the updated NLEAP V.2 model: A case study in South Central Bulgaria. Soil and Water Conservation Society Proceedings. Abstract. Soil and Water Conservation Society Annual Meeting, Tampa, FL, July 21-25-2007. p. 64.
Nitrogen leaching on Fluvisols under vegetable cropping system: An assessment with the NLEAP model in Southern Bulgaria -
Anguelov, G., Kercheva, M., Koleva, V., Stoicheva, D., Delgado, J.A. 2007. Nitrogen leaching on Fluvisols under vegetable cropping system: An assessment with the NLEAP model in Southern Bulgaria. Soil and Water Conservation Society Proceedings. Annual Meeting Abstract. Tampa, FL July 21-25-2007. p. 71.
Testing of a Nitrogen Index to Assess N Management Practices With GIS To Identify High-Risk Cropping System/Landscape Combinations -
Delgado, J.A., Shaffer, M.J. 2007. Testing of a Nitrogen Index to Assess N Management Practices With GIS. Proc. of the Soil and Water Conservation. To Identify High-Risk Cropping System/Landscape Combinations . Soil and Water Conservation Society Proceedings.
Effect of Cover Crops on Soil Fungal Diversity and Biomass -
Manter, D.K., Delgado, J.A., Merlin, D., Samuel, E. 2007. Effect of Cover Crops on Soil Fungal Diversity and Biomass. Meeting Proceedings. pp. 21-22.
Using Green Manure to Enhance POtato Production: II, Other Bnenefits -Effects on Nutrient Cycling, Tuber Yield and Quality -
Delgado, J.A., Essah, S., Dillon, M., Ingahn, R., Manter, D.K., Stuebe, A., Sparks, R. 2007. Using Green Manure to Enhance POtato Production: II, Other Bnenefits -Effects on Nutrient Cycling, Tuber Yield and Quality. 24th Annual Potato/Grain Conference, Jan. 30 - Feb. 2, 2007, Colorado State University, Monte Vista, CO.
INCREASED NITROGEN USE EFFICIENCIES AS A KEY MITIGATION ALTERNATIVE TO REDUCE NITRATE LEACHING IN THE NORTHERN CHINA PLAIN -
Li, X., Hu, C., Zhang, Y., Delgado, J.A., Ouyand, Z. 2007. Increased nitrogen use efficiencies as a key mitigation alternative to reduce nitrate leaching in the northern china plain. Agricultural Water Management. 89:137-147.
NITROGEN FERTILIZER MANAGEMENT BASED ON SITE-SPECIFIC MANAGEMENT ZONES REDUCE POTENTIAL FOR NO3-N LEACHING -
Delgado, J.A., Khosla, R., Bausch, W.C., Westfll, D., Inman, D. 2006. Nitrogen fertilizer management based on site-specific management zones reduce potential for NO3-n leaching. Journal of Soil and Water Conservation Society. 60:402-410
USE OF 15N ISOTOPIC TECHNIQUES TO ASSESS THE POTENTIAL OF A MUSTARD COVER CROP TO CYCLE N TO POTATOES -
Collins, H.P., Delgado, J.A., Alva, A.K., Follett, R.F. 2007. Use of 15n isotopic techniques to estimate nitrogen cycling from a mustard cover crop to potatoes. Agronomy Journal. 99: 27-35, 2007.
PRECISION CONSERVATION -
Berry, J., Delgado, J.A. 2007. Precision conservation. In: Stand trimble (ed). Encyclopedia of Water Science. Marcel Decker, New York. DOI:.1081/E-EWS-12004829 - electronic version.
A Decade if Cgange in Nutrient Management: A New Nitrogen Index -
Delgado, J.A., Shaffer, M.J., Hu, C., Lavado, R., Wong, J.C., Joosse, P., Li, X., Rimski-Korsakov, H., Follett, R.F., Colon, W., Sotomayor, D. 2006. A decade if cgange in nutrient management: a new nitrogen index. Journal of Soil and Water Conservation. J. Soil and Water Conservation. 61:62!-71A.
CHEMICAL PROCESSES IN SOILS -
Delgado, J.A. 2006. Chemical processes in soils. Soil Science Society of America Special Publication Book Chapter. 70:709-710.
PRECISION CONSERVATION IN NORTH AMERICA. -
Delgado, J.A., Cox, C., Pierce, F.J., Dosskey, M. 2005. Precision conservation in North America. Journal of Soil and Water Conservation Society. 60:340-341.
IMPACT OF RESIDUAL SOIL NITRATE ON REMOTE SENSED PLANT N STATUS OF IRRIGATED CORN FOR MANAGING IN-SEASON NITROGEN APPLICATIONS -
Bausch, W.C., Delgado, J.A. 2005. Impact of residual soil nitrate on remote sensed plant n status of irrigated corn for managing in-season nitrogen applications. Precision Agriculture. Manuscript number PRAG276-04
NITROGEN MANAGEMENT TO PROTECT WATER RESOURCES -
Randall, G., Delgado, J.A., Schepers, J.S. 2008. Nitrogen management to protect water resources. p. 911-945. In Schepers and Raun (eds) Nitrogen in Agricultural Systems. SSSA Monograph. 49. Madison, WI.
Dry biomass and nitrogen content of cover crops grown in a high altitude arid system -
Delgado, J.A., Dillon, M., Ingham, R., Sparks, R., Manter, D.K. 2005. Dry biomass and nitrogen content of cover crops grown in a high altitude arid system. American Society of Agronomy Abstracts on CD ROM.
Assessment of Soil Microbial Communities Using a Combined Quantitative PCR and Length Heterogeneity Analysis Approach -
Manter, D.K., Broz, A.K., Delgado, J.A., Vivanco, J.M. 2006. Assessment of Soil Microbial Communities Using a Combined Quantitative PCR and Length Heterogeneity Analysis Approach. American Society of Agronomy Abstracts on CD ROM.
Potential Use of Precision Conservation Techniques to Reduce Nitrate Leaching in Irrigated Crops. -
Delgado, J.A., Bausch, W.C. 2006. Potential Use of Precision Conservation Techniques to Reduce Nitrate Leaching in Irrigated Crops. Journal of Soil and Water Conservation. 6-:379-387.
APPLYING SPATIAL ANALYSIS FOR PRECISION CONSERVATION ACROSS THE LANDSCAPE -
Berry, J., Delgado, J.A., Pierce, F., Khosla, R. 2006. Applying spatial analysis for precision conservation across the landscape. Journal of Soil and Water Conservation Society. 60:363-370.
Effects of Potato-Grain Rotations on Soil Erosion, Carbon Dynamics and Properties of Rangeland Sandy Soils. -
Alsheikh, A., Delgado, J.A., Barbarick, K., Sparks, R., Dillon, M., Qian, Y., Cardon, G. 2005. Effects of Potato-Grain Rotations on Soil Erosion, Carbon Dynamics and Properties of Rangeland Sandy Soils. J. Soil Tillage Research. 81:227-238.
TECHNOLOGIES AND CROP ROTATIONS TO MANAGE VARIABILITY AND CONSERVE SOIL AND WATER QUALITY -
Delgado, J.A., Stuebbe, A., Dillon, M., Sparks, R., Essah, S. 2005. Technologies and crop rotations to manage variability and conserve soil and water quality. Proc. San Luis Valley Potato Grain Conf. p. 55-65.
ASSESSMENT OF GROUNDWATER USE BY WHEAT (TRITICUM ACESTIVUM L.) IN THE LUANCHENG XIAN REGION AND POTENTIAL IMPLICATIONS FOR WATER CONSERVATION IN THE NORTHWESTERN NORTH CHINA PLAIN -
Chunsheng, H., Delgado, J.A., Xiying, Z., Ma, L. 2005. Assessment of groundwater use by wheat (triticum acestivum l.) in the luancheng xian region and potential implications for water conservation in the northwestern north china plain. Journal of Soil and Water Conservation. 60:80-88.
GIS, MODELING, AND OTHER INNOVATIVE NUTRIENT MANAGEMENT TOOLS THAT CAN BE USED TO ASSESS NITRORGEN FERTILIZER USE EFFICIENCY FROM AGRICULTURAL SYSTEMS. -
Delgado, J.A. 2004. Gis, modeling, and other innovative nutrient management tools that can be used to assess nitrorgen fertilizer use efficiency from agricultural systems. National Congress Mexican Society for Soil Science. CD-ROM.
QUANTIFICATION OF THE NITROGEN LOSSES IN AGRICULTURAL SYSTEMS INCLUDING THE POTENTIAL USE OF A NITROGEN LEACHING INDEX TOOL TO ASSESS POTENTIAL IMPACTS TO GROUNDWATER -
Delgado, J.A., Follett, R.F. 2004. Quantification of the nitrogen losses in agricultural systems including the potential use of a nitrogen leaching index tool to assess potential impacts to groundwater. National Congress Mexican Society for Soil Science. CD-ROM.
YIELD AND QUALITY OF TWO US RED POTATOES: INFLUENCE OF NITROGEN RATE AND PLANT POPULATION -
Essah, S., Holm, D., Delgado, J.A. 2004. Yield and quality of two US red potatoes: influence of nitrogen rate and plant population. Proceedings of the 4th International Crop Science Congress. Sept. 26-Oct. 1, 2004. Brisbane, Queensland, Australia. CD OM Publication.
POTENTIAL USES OF PRECISION AGRICULTURE AND PRECISION CONSERVATION FOR IMPROVEMENTS IN NUTRIENT USE EFFICIENCY AND ENVIRONMENTAL CONSERVATION -
Colon, W., Delgado, J.A. 2004. Potential uses of precision agriculture and precision conservation for improvements in nutrient use efficiency and environmental conservation. Proc. III Encuentro Cientifico International de Invierno.
USE OF BEST MANAGEMENT PRACTICES AND A NITROGEN LEACHING INDEX TO MAXIMIZE N RECOVERY AND PROTECT GROUND WATER FOR HIGH RISK CROPPING SYSTEMS - LANDSCAPE CONBINATIONS SYSTEMS. -
Delgado, J.A. 2004. Use of best management practices and a nitrogen leaching index to maximize n recovery and protect ground water for high risk cropping systems - landscape conbinations systems. Ontario Nitrogen Forum. CD-ROM.
NITROGEN LEACHING MANAGEMENT -
Meisinger, J.J., Delgado, J.A., Alva, A.K. 2006. Nitrogen leaching management. Encyclopedia of Soils in the Environment. 2: 1122-1124.
EFFECTS OF POTATO-GRAIN ROTATIONS ON SOIL EROSION, CARBON DYNAMICS AND PROPERTIES OF RANGELAND SNADY SOILS -
Al-Sheikh, Delgado, J.A., Barbarick, K., Sparks, R., Dillon, M., Qian, Y., Cardon, G. 2005. Effects of potato-grain rotations on soil erosion, carbon dynamics and properties of rangeland snady soils. J. Soil Tillage Research. 81:227-238.
TRACING THE FATE OF 15N IN A SMALL-GRAIN POTATO ROTATION TO IMPROVE ACCOUNTABILITY OF N BUDGETS. -
Delgado, J.A., Dillon, M., Sparks, R., Follett, R.F. 2004. Tracing the fate of 15n in a small-grain potato rotation to improve accountability of N budgets.. Journal of Soil and Water Conservation. 59:271-276.
NITRATE LEACHING INDEX -
Van Es, H.M., Delgado, J.A. 2004. Nitrate leaching index. Encyclopedia of Soil Science. p. 1-3.
WINTER COVER CROPS -
Delgado, J.A., Reeves, D.W., Follett, R.F. 2005. Winter cover crops. Encyclopedia of Soil Science. p. 1-3.
NUTRIENT MANAGEMENT -
Delgado, J.A., Lemunyon, J. 2006. Nutrient management. pp. 1157-1160. Rattan Lal, Editor. Marcel Decker, New York. Encyclopedia of Soil Science. p. 1924.
LOW GROUND COVER FILTERING TO IMPROVE RELIABILITY OF NRI CORN N STATUS CLASSIFICATION -
Schleicher, T.D., Bausch, W.C., Delgado, J.A. 2003. Low ground cover filtering to improve reliability of nri corn n status classification. Transactions of the ASAE.
NITROGEN AND IRRIGATION MANAGEMENT PRACTICES TO IMPROVE NITROGEN UPTAKE EFFICIENCY AND MINIMIZE LEACHING LOSSES IN SOILS UNDER CITRUS -
Alva, A.K., Paramasivam, S., Fares, A., Delgado, J.A., Mattos, Jr, D., Sajwan, K. 2004. Nitrogen and irrigation management practices to improve nitrogen uptake efficiency and minimize leaching losses in soils under citrus. Journal of Crop Improvement. 15:421-470.
NUMERICAL MODELING TO STUDY THE FATE OF NITROGEN IN CROPPING SYSTEMS AND BEST MANAGEMENT CASE STUDIES -
Delgado, J.A., Alva, A.K., Fares, A., Paramasivam, S., Mattos, Jr, D., Sajwan, K. 2004. Numerical modeling to study the fate of nitrogen in cropping systems and best management case studies. Journal of Crop Improvement. 15:369-420.
GROUND-BASED SENSING OF PLANT NITROGEN STATUS IN IRRIGATED CORN TO IMPROVE NITROGEN MANAGEMENT -
Bausch, W.C., Delgado, J.A. 2003. Ground-based sensing of plant nitrogen status in irrigated corn to improve nitrogen management. Crop Science Society Of America.
EVALUATION OF EFFECTIVENESS OF CONSERVATION PRACTICES -
Delgado, J.A., Lemunyon, J., Busscher, W.J., King, A. 2003. Evaluation of effectiveness of conservation practices. American Society of Agronomy Abstracts. 95 CD-ROM.
USE OF GEOSPACIAL INFORMATION FOR N MANAGEMENT AND PRODUCTION OF A HIGH QUALITY CROP -
Delgado, J.A. 2003. Use of geospacial information for n management and production of a high quality crop. American Society of Agronomy Abstracts. 95 CD-ROM.
MASS BALANCES AND RELATIONSHIPS BETWEEN CARBON, NITROGEN, AND PHOSPOROUS POOLS IN HIGH ALTITUDE COARSER SANDY SOIL -
Al-Sheikh, Delgado, J.A., Barbarick, K., Sparks, R., Bowman, R., Cardon, G., Qian, Y. 2003. Mass balances and relationships between carbon, nitrogen, and phosporous pools in high altitude coarser sandy soil. American Society of Agronomy Abstracts. 95. CD-ROM.
EVALUATION OF BEST MANAGEMENT PRACTICES ON N DYNAMICS FOR A NORTH CHINA PLAIN -
Hu, C., Delgado, J.A., Li, X. 2003. Evaluation of best management practices on n dynamics for a north china plain. American Society of Agronomy Abstracts. 95 CD-ROM.
PRECISION CONSERVATION FOR ENVIRONMENTAL SUSTAINABILITY -
Berry, J., Delgado, J.A., Khosla, R., Pierce, F. 2003. Precision conservation for environmental sustainability. 58:332-339.
CARBON AND NUTRIENT CYCLES -
DELGADO,J.A., FOLLETT,R.F., CARBON AND NUTRIENT CYCLES, JOURNAL OF SOIL AND WATER CONSERVATION, 2000. 57:455-464.
NITROGEN FATE AND TRANSPORT IN AGRICULTURAL SYSTEMS -
FOLLETT,R.F., DELGADO,J.A., NITROGEN FATE AND TRANSPORT IN AGRICULTURAL SYSTEMS, JOURNAL OF SOIL AND WATER CONSERVATION, 2002. 57:402-408.
PRINCIPLES FOR MANAGING NITROGEN LEACHING -
MEISINGER, J.J., DELGADO, J.A. PRINCIPLES FOR MANAGING NITROGEN LEACHING. JOURNAL OF SOIL AND WATER CONSERVATION. 2002.
USE OF INNOVATIVE TOOLS TO INCREASE NITROGEN USE EFFICIENCY AND PROTECT ENVIRONMENTAL QUALITY FOR TEMPERATE AND TROPICAL REGIONS -
Delgado, J.A., Bausch, W.C., Wright, D., Olivieri, L., Duke, H.R., Follett, R.F., Westfall, D., Dillon, M., Thompson-John, A. 2002. Use of innovative tools to increase nitrogen use efficiency and protect environmental quality for temperate and tropical regions. J. Stormwater. 3:48-56.
PRINCIPLES FOR MANAGING NUTRIENT LEACHING -
USE OF SIMULATIONS FOR EVALUATION OF BEST MANAGEMENT PRACTICES ON IRRIGATED CROPPING SYSTEMS. -
Delgado, J.A. 2001. Use of simulations for evaluation of best management practices on irrigated cropping systems. Book Chapter. In Modeling Carbon and Nitrogen Dynamics for Soil Management. p. 355-381. M.J. Shaffer, L. Ma, and S. hansen (eds). Lewis Publishers, Boca Raton, FL.
USE OF INNOVATIVE TOOLS TO INCREASE NITROGEN USE EFFICIENCY AND PROTECT ENVIRONMENTAL QUALITY IN CROP ROTATIONS. -
Delgado, J.A., Ristau, R.J., Dillon, M.A., Duke, H.R., Stuebe, A., Follett, R.F., Shaffer, M.J., Riggenbach, R.R., Sparks, R.T., Thompson, A. 2001. Use of innovative tools to increase nitrogen use efficiency and protect environmental quality in crop rotations. Communications in Soil Science and Plant Analysis. 32:1321-1354.
POTENTIAL USE OF PRECISION FARMING TO IMPROVE NUTRIENT MANAGEMENT ON AN IRRIGATED POTATO-BARLEY ROTATION -
Delgado, J.A., Duke, H.R. 2001. Potential use of precision farming to improve nutrient management on an irrigated potato-barley rotation. International Conference on Precision Agriculture Abstracts & Proceedings. CD-ROM.
CONTROL OF N TRANSFORMATIONS TO INCREASE NITROGEN USE EFFICIENCY AND PROTECT ENVRIONMENTAL QUALITY, FOR JOURNAL OF EROSION CONTROL. -
Delgado, J.A. 2000. Control of n transformations to increase nitrogen use efficiency and protect envrionmental quality. J. Erosion Control. 7:(5) 68-75.
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Last Modified: 5/2/2016
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