Dr. Raymond Weil, Professor Email: Email Me! Office: 1103B H. J. Patterson Hall Phone: 301.405.1314 Fax: 301.314.9041 Homepage  |  AGNR Directory Page

Courses

• ENST105: Soil and Environment Quality (3 credits)
• ENST200: Fundamentals of Soil Science (4 credits)
• ENST411: Principles of Soil Fertility (3 credits)
• ENST441: Sustainable Agriculture (3 credits)
• ENST711: Advanced Plant-Soil Relationships (2 credits)

Research Projects

• Improvements in Ridge Tillage.
• Active Organic Matter Test to Help Farmers Profitably Improve Soil Quality.
• Do Current Regulations Protect Soil Ecosystems from Metal Toxicity?
• Environmental Impacts of Management Intensive Grazing Based Dairy Farms
• Multiple Benefits of Brassica Cover Crop Mixtures in Sustainable Cropping Systems

Education:

• B.S. in Crop Science from Michigan State University, East Lansing, MI, 1970.
• M.S. in Soil Science from Purdue University, West Lafayette, IN, 1973.
• Ph.D. in Soil Ecology from Virginia Tech, Blacksburg, VA, 1977.

Representative Publications:

Books

• Weil, R.R. 2005. Lab Manual for Introductory Soil Science. 7 ed.. Kendall Hunt, Dubuque, Iowa.
• Weil, Ray. 2004. Lecture Notes for Soil and Environmental Quality. NRSC 105. Maryland Book Exchange, College Park, MD.
• Weil, Ray. 2004. Principles of Soil Fertility: Lecture Notes for NRSC 441. Maryland Book Exchange, College Park, MD.
• Weil, Ray. 2004. Readings for NRSC 441: Issues in Sustainable Agriculture. Maryland Book Exchange, College Park, MD.
• Brady, N.C. and R.R. Weil. 2004. Elements of the Nature and Properties of Soils 2nd Edition. Prentice Hall, Upper Saddle River, NJ.
• Magdoff, F., and R.R. Weil, (eds.). 2004. Soil Organic Matter in Sustainable Agriculture. CRC Press, Upper Saddle River, NJ.
• Weil, Ray. 2002. Fundamentals of Soil Science: Lecture Notes for NRSC 200. Maryland Book Exchange, College Park, MD.
• Brady, N.C. and R.R. Weil. 2002. The Nature and Properties of Soils 13th Ed. Prentice Hall, Upper Saddle River, NJ.
• Weil, R.R. and W. Kroontje. 1984. The Nature and Properties of Soils: A Study Guide. MacMillan Pub. Co, New York, NY.

Chapters in Books

• Weil, Ray. 2001. Soil management for sustainable intensification: some guidelines. p. 145-154. In Keeney, D Sustainability of Agricultural Systems in Transition. Agronomy Society of America Special Publication 64, ASA, Madison, WI.
• Bottrell, D.G. and R.R. Weil. 1995. Protecting crops and the environment: striving for durability. p. 55-72. In A.S. Juo Bridging Food Production and Environmental Quality in Developing Countries. ASA Spec. Publ. 60, .
• Weil, R.R. and S.K. Mughogho. 1993. Nutrient Cycling By Acacia albida in Agroforestry Systems. p. 97-108. In Ragland Technologies for Sustainable Agriculture in the Tropics. Amer. Soc. of Agronomy Spec. Publ. 56, .

Selected Publications

• Weil, R., and A. Kremen. Thinking across and Beyond Discipines to Make Cover Crops Pay. Journal of the Science of Food and Agriculture 87:551-557.
• Waddell, J.T. and R.R. Weil. 2006. Effects of Fertilizer Placement on Solute Leaching under Ridge Tillage and No Till. Soil & Tillage Research. 90:194-204.
• Wienhold, B.J., and R.R. Weil. 2006. Preserving Soil and Crop Resources by Increasing Cropping Intensity and Decreasing Tillage. Renewable Agriculture and Food Systems. 21:1-2.
• Williams, S.M., and R.R. Weil. 2004. Crop Cover Root Channels May Alleviate Soil Compaction Effects on Soybean Crop (PowerPoint file of journal cover). Soil Sci Soc Am J 68:1403-1409.
• Gilker, R.E., R.R. Weil, and B. Mertz, (eds.). 2004. Making the Switch: Two Successful Dairy Graziers Tell Their Stories. Future Harvest - Chesapeake Alliance for Sustainable Agriculture:1-16.
• Weil, R.R., K.R. Islam, M.A. Stine, J.B. Gruver, and S.E. Samson- Liebig. 2003. Estimating Active Carbon for Soil Quality Assessment: A Simplified Method for Lab and Field Use. Amer. J. of Alternative Agric. 18:3-17.
• Weil, R.R., and R.E. Gilker. 2003. Management intensive grazing: Environmental impacts and economic benefits. Fact Sheet. University of Maryland, College Park, MD.:.
• Weil, R.R., and S.A. Williams. 2003. Brassica cover crops to alleviate soil compaction (available for download in MS Word format or Adobe Acrobat format. Fact Sheet. University of Maryland, College Park, MD.:.
• Weil, Ray R. 2003. Getting To Know a Catena: A Field Exercise for Introductory Soil Science. J. Nat. Resour. Life Sci. Educ. 32 :1-4.
• Weil, Ray R. 2002. Soil and Environmental Quality: A Course for Non-Majors. J. Nat. Resour. Life Sci. Educ. 31:117-122.
• Stine, M. A. and Weil, R. R. 2002. The relationship between soil quality and crop productivity across three tillage systems in south central Honduras. Amer. J. Alternative Agric. 17:2-8.
• Gilker R.E., Weil R.R., Krizek D.T. and Momen B. 2002. Eastern Gamagrass Root Penetration in Adverse Subsoil Conditions. Soil Science Society of America Journal 66:631-638.
• Weil, Ray. 2000. Soil and Plant Influences on Crop Response to Two African Phosphate Rocks. Agronomy Journal 92:1167-1175.
• Islam, K.R. and R.R. Weil. 2000. Soil quality indicator properties in the mid-Atlantic region as influenced by conservation management. Jour. Soil and Water Conserv. 55:69-78.
• Islam, K.R. and R.R. Weil. 2000. Land use effect on soil quality in tropical forest ecosystem of Bangladesh. Agric., Ecosystems, and Environ. 79:9-16.
• Weil, Ray R. and Spider K. Mughogho. 2000. Sulfur nutrition of maize in four regions of Malawi. Agronomy Journal 92:649-656.
• Islam, K.R. and R.R. Weil. 1998. Microwave irradiation of soil for routine measurement of microbial biomass. Biology and Fertility of Soils 27:408-416.
• Islam, K.R. and R.R. Weil. 1998. A rapid microwave digestion for colorimetric measurement of soil organic carbon. Commun. Soil Sci. and Plant Anal. 29:2269-2284.
• Cartron, J. and R. Weil. 1998. Seasonal trends in soil nitrogen from injected or surface-incorporated sewage sludge applied to corn. Commun. Soil Sci. and Plant Anal. 29:121-139.
• Weil, R.R., K.A. Lowell, and H.M. Shade. 1993. Effects of intensity of agronomic practices on a soil ecosystem. Amer J. Altern. Agric. 8:5-14.
• Weil, R.R. and M.E. McFadden. 1991. Fertility and weed stress effects on performance of maize/soybean intercrop. Agron J. 83:717-721.
• Weil, R. R. 1990. Defining and using the concept of sustainable agriculture. J. Agron. Educ. 19:126-130.
• Weil, R.R., R.A. Weismiller, and R.S. Turner. 1990. Nitrate contamination of groundwater under irrigated coastal plain soils. J. Environ. Qual. 19:441-448.
• Weil, R.R. 1982. Maize-weed competition and soil erosion in unweeded maize. Tropical Agriculture 59:207-213.
• Weil, R.R. and W. Kroontje. 1977. Grade inflation: causes and cures. J. Agron. Educ. 6:29-34.
• Weil, R.R., and W. Kroontje. 1976. Improving the quality of computer-scored tests in agronomic courses. J. Agron. Education. 5:78-86.

Counter started end of February 2007

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