Projects

SUSTAINABLE FORAGE PRODUCTION FOR LOW-INPUT FARMING SYSTEMS Appropriated (D)   Accession Number: 412838

Integrated Forage Systems for Food and Energy Production in the Southern Great Plains Appropriated (D)   Accession Number: 424179

FORAGE PRODUCTION FOR LIMITED RESOURCE PRODUCERS Nonfunded Cooperative Agreement (N)   Accession Number: 423330

SYNTHESIZING FORAGE, LIVESTOCK, CLIMATE, AND ECONOMIC INFORMATION INTO A DECISION SUPPORT FRAMEWORK Specific Cooperative Agreement (S)   Accession Number: 422150

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

Radish (Raphanus sativus) seed size affects germination response to coumarin - (Peer Reviewed Journal)

Williams, R.D., Bartholomew, P.W. 2012. Radish (Raphanus sativus) seed size affects germination response to coumarin. Allelopathy Journal. 30(2):271-280.

Leaf damage in cool-season grasses subjected to simulated hoof pressures - (Peer Reviewed Journal)

Bartholomew, P.W., Williams, R.D. 2012. Leaf damage in cool-season grasses subjected to simulated hoof pressures. Forage and Grazinglands. Available: http://www.plantmanagementnetwork.org/fg/.

Pasture residue amount and sowing method effects on establishment of overseeded cool-season grasses and on total annual production of herbage - (Peer Reviewed Journal)

Bartholomew, P.W., Schneider, J.M., Williams, R.D. 2011. Pasture residue amount and sowing method effects on establishment of overseeded cool-season grasses and on total annual production of herbage. Grass and Forage Science. 66(4):560–568.

Endophyte status of tall fescue (festuca arundinacea) affects seed predation - (Abstract Only)

Bartholomew, P.W., Williams, R.D. 2011. Endophyte status of tall fescue (festuca arundinacea) affects seed predation. Weed Science Society of America Meeting Abstracts. 4(83) [Abstract].

Preferential predation of cool season grass seed by the common cricket (Acheta domesticus) - (Abstract Only)

Williams, R.D., Bartholomew, P.W. 2011. Preferential predation of cool season grass seed by the common cricket (Acheta domesticus). Weed Science Society of America Meeting Abstracts. 4(79) [Abstract].

Hairy vetch (Vicia villosa) seed size affects germination response to coumarin - (Peer Reviewed Journal)

Williams, R.D., Bartholomew, P.W. 2011. Hairy vetch (Vicia villosa) seed size affects germination response to coumarin. Allelopathy Journal. 27(2):237-244.

Variation of hairy vetch seed weight alters germination and seedling growth response to an allelochemical - (Abstract Only)

Williams, R.D., Bartholomew, P.W. 2011. Variation of hairy vetch seed weight alters germination and seedling growth response to an allelochemical. Proceedings of Southern Weed Science Society. 64:134.

Predation of warm-and cool-season grass seed by the common cricket (Acheta domesticus L.) - (Abstract Only)

Williams, R.D., Bartholomew, P.W. 2010. Predation of warm-and cool-season grass seed by the common cricket (Acheta domesticus L.) [abstract]. Weed Science Society of America Meeting Abstracts, February 7-11, 2010, Denver, CO. Abstract No. O-301. Available On-line: https/srm.conference-services.net/reports/template/onetexabstract.xml?xsl+template/onetextabstract.xsl&conferenceID=1756&abstractID=342681

Does leaf manipulation affect leaf appearance in italian ryegrass (Lolium multiflorum Lam.) - (Peer Reviewed Journal)

Williams, R.D., Bartholomew, P.W. 2010. Does leaf manipulation affect leaf appearance in italian ryegrass (Lolium multiflorum Lam.). Proceedings of Southern Weed Science Society. 63:57-69.

OVERSEEDING UNIMPROVED WARM-SEASON PASTURE WITH COOL- AND WARM-SEASON LEGUMES TO ENHANCE FORAGE PRODUCTIVITY - (Peer Reviewed Journal)

Bartholomew, P.W., Williams, R.D. 2010. Overseeding unimproved warm-season pasture with cool- and warm-season legumes to enhance forage productivity. Journal of Sustainable Agriculture. 34:125-140.

Self-Reseeding Potential and Herbage Production of Italian Ryegrass (Lolium Multiflorum Lam.) Affected by Date and Intensity of Initial Harvest - (Peer Reviewed Journal)

Bartholomew, P.W., Williams, R.D. 2009. Establishment of Italian ryegrass (Lolium multiflorum Lam.) by self-seeding as affected by cutting date and degree of herbage removal in spring in pastures of the southern Great Plains of the United States. Grass and Forage Science. 64(2):177-186.

Annual (Italian) ryegrass. A cool-season forage for small farms - (Other)

Bartholomew, P.W. 2009. Annual (Italian) ryegrass. A cool-season forage for small farms [abstract]. Grazinglands Research Laboratory Miscellaneous Publication. 1 p.

Differential predation of forage seed - (Abstract Only)

Williams, R.D., Bartholomew, P.W. 2008. Differential predation of forage seed [abstract]. American Society of Agronomy Abstracts, October 5-9, 2010, Houston, TX. CD-ROM.

Increase in forage production on small and resource-limited farms by introduction of cool-season grasses - (Abstract Only)

Bartholomew, P.W., Williams, R.D. 2008. Increase in forage production on small and resource-limited farms by introduction of cool-season grasses [abstract]. In: Proceedings of the Soil and Water Conservation Society, Farming with Grass: Achieving Sustainable Mixed Agricultural Landscapes in Grasslands Environments, October 20-22, 2008, Oklahoma City, OK. Available on-line:http://www.swcs.org/en/publications/farming_with_grass/.

Reduced-input overseeding of cool-season grasses - (Abstract Only)

Bartholomew, P.W., Williams, R.D. 2008. Reduced-input overseeding of cool-season grasses [abstract]. ASA-CSSA-SSSA Annual Meeting Abstracts, October 5-9, 2008, Houston, TX. 2008 CD-ROM.

Dispersal and post-dispersal predation of Italian ryegrass seed in unimproved pasture. - (Abstract Only)

Williams, R.D., Bartholomew, P.W. 2008. Dispersal and post-dispersal predation of Italian ryegrass seed in unimproved pasture. International Weed Science Congress. 297-298.

Effects of accelerated aging and p-coumaric on crimson clover (Trifolium incarnatium L.) seed germination. - (Peer Reviewed Journal)

Williams, R.D., Bartholomew, P.W. 2009. Effects of accelerated aging and p-coumaric on crimson clover (Trifolium incarnatium L.) seed germination.Allelopathy Journal. 23(1):269-276.

Predation of italian ryegrass (Lolium multiflorum) seed - (Abstract Only)

Williams, R.D., Bartholomew, P.W. 2008. Predation of italian ryegrass (Lolium multiflorum) seed [abstract]. Weed Science Society of America Meeting Abstracts, February 4-7, 2010, Chicago, IL. Abstract No. 72. Available on-line: http://wssa.net/meetings/wssaabstracts/abstractsearch.php

Effects of accelerated aging on italian ryegrass (Lolium multiflorum) seed germination - (Abstract Only)

Williams, R.D., Bartholomew, P.W. 2008. Effects of accelerated aging on italian ryegrass (Lolium multiflorum) seed germination [abstract]. Proceedings of Southern Weed Science Society, January 28-30, 2008, Jacksonville, FL. 61:190.

SEEDING COOL-SEASON GRASSES INTO UNIMPROVED WARM-SEASON PASTURE - (Peer Reviewed Journal)

Bartholomew, P.W., Williams, R.D. 2008. Seeding cool-season grasses into unimproved warm-season pasture. Grass and Forage Science. 63:94-106.

Soil bulk density and strength effects on seedling growth in annual ryegrass - (Abstract Only)

Bartholomew, P.W., Williams, R.D. 2007. Soil bulk density and strength effects on seedling growth in annual ryegrass [abstract]. Agronomy Society of America, Crop Science Society of America, Soil Science Society of America Meeting. 2007 Industrial Annual Meetings November 4-8,2007,New Orleans, Los Angeles.

Insect seed predation as a factor in Italian ryegrass persistence - (Abstract Only)

Williams, R.D., Bartholomew, P.W. 2007. Insect seed predation as a factor in Italian ryegrass persistence[abstract]. American Society of Agronomy Abstracts. 271-19.

Effect of cowpea and pea inocula on cool-season grasses. - (Peer Reviewed Journal)

Williams, R.D., Bartholomew, P.W. 2008. Effect of cowpea and pea inocula on cool-season grasses. Allelopathy Journal. 21(2):381-388.

Sod-seeding cool-season grasses on unimproved warm-season pastures - (Abstract Only)

Bartholomew, P.W. 2006. Sod-seeding cool-season grasses on unimproved warm-season pastures [abstract]. Proceedings of the National Conference on Grazing Lands, December 10-13, 2006, St. Louis, MO. 2006 CD-ROM.

Interaction of accelerated aging and p-coumaric acid on crimson clover seed germination - (Other)

Williams, R.D., Bartholomew, P.W. 2007. Interaction of accelerated aging and p-coumaric acid on crimson clover seed germination [abstract]. Weed Science Society of America Meeting Abstracts.

Sowing method and crop residue effects on overseeded annual ryegrass - (Abstract Only)

Bartholomew, P.W., Williams, R.D. 2006. Sowing method and crop residue effects on overseeded annual ryegrass [abstract]. Agronomy Society of America, Crop Science Society of America, Soil Science Society of America Meeting, November 12-16, 2006, Indianapolis, IN. 2006 CD-ROM.

INTERACTION OF ACCELERATED AGING AND P-COUMARIC ACID ON CRIMSON CLOVER SEED GERMINATION. - (Abstract Only)

Williams, R.D., Bartholomew, P.W. 2006. Interaction of accelerated aging and p-coumaric acid on crimson clover seed germination.. Agronomy Society of America, Crop Science Society of America, Soil Science Society of America Meeting.

EFFECTS OF EXPOSURE TO BELOW-FREEZING TEMPERATURES, SOIL MOISTURE CONTENT AND NITROGEN APPLICATION ON PHYLLOCHRON IN COOL-SEASON GRASSES - (Peer Reviewed Journal)

Bartholomew, P.W., Williams, R.D. 2006. Effects of exposure to below-freezing temperatures, soil moisture content and nitrogen application on phyllochron in cool-season grasses. Grass and Forage Science. 61:146-153.

OVERSEEDING COOL-SEASON FORAGES INTO UNIMPROVED WARM-SEASON PASTURE - (Abstract Only)

Bartholomew, P.W. 2005. Overseeding cool-season forages into unimproved warm-season pasture. Langston University Grassland Center of Excellence Factsheet. 2 pp.

FORAGE RESIDUE EFFECTS ON SOIL TEMPERATURES AND ON PHYLLOCHRON IN OVERSEEDED ITALIAN RYEGRASS - (Abstract Only)

Bartholomew, P.W., Williams, R.D. 2005. Forage residue effects on soil temperatures and on phyllochron in overseeded Italian ryegrass [abstract]. Agronomy Society of America, Crop Science Society of America, Soil Science Society of America Meeting. Paper No. 4295.

COMPARISON OF CONVENTIONAL AND MINIMAL TILLAGE FOR LOW-INPUT PASTURE IMPROVEMENT - (Peer Reviewed Journal)

Bartholomew, P.W. 2005. Comparison of Conventional and Minimal Tillage for Low-Input Pasture Improvement. Online. Forage and Grazinglands doi:10.1094/FG-2005-0913-01-RV. Available: http://www.plantmanagementnetwork.org/pub/fg/review/2005/minimal

IRRIGATED FORAGE PRODUCTION IN THE CENTRAL CLAY PLAINS OF SUDAN - (Peer Reviewed Journal)

Bartholomew, P.W., Mohammed, O.M., Hamid, M.T., Mahir, M. 2003. Irrigated forage production in the central clay plains of Sudan. Journal of Tropical Agriculture. 80(3):135-145.

THE EFFECT OF HARVEST MANAGEMENT ON FORAGE PRODUCTION AND SELF-RESEEDING POTENTIAL OF ITALIAN RYEGRASS (LOLIUM MULTIFLORUM L.) - (Proceedings)

Bartholomew, P.W., Williams, R.D. 2005. The effect of harvest management on forage production and self-reseeding potential of Italian ryegrass (Lolium multiflorum L.)[abstract]. In: Milne, J.A., editor. Pastural Systems in Marginal Environments. Wageningen Academic Publishers, The Netherlands. p. 116.

COOL-SEASON GRASS DEVELOPMENT RESPONSE TO ACCUMULATED TEMPERATURE UNDER A RANGE OF TEMPERATURE REGIMES - (Peer Reviewed Journal)

Bartholomew, P.W., Williams, R.D. 2005. Cool-season grass development response to accumulated temperature under a range of temperature regimes. Crop Science. 45:529-534.

FACTORS AFFECTING ITALIAN RYEGRASS (LOLIUM MULTIFLORUM L.) SEED DISTRIBUTION - (Abstract Only)

Williams, R.D., Bartholomew, P.W. 2005. Factors affecting Italian ryegrass (Lolium multiflorum L.) seed distribution [abstract]. In: Murphy, J.J., editor. Utilization of Grazed Grass in Temperate Animal Systems. Wageningen Academic Publishers, The Netherlands. p. 248.

SEED HYDRATION-DEHYDRATION IN AN ALLELOCHEMICAL (COUMARIN) ALTERS GERMINATION AND SEEDLING GROWTH - (Peer Reviewed Journal)

Williams, R.D., Peal, L.K., Bartholomew, P.W. 2005. Seed hydration-dehydration in an allelochemical (coumarin) alters germination and seedling growth. Allelopathy Journal. 15(2):183-196.

RE-ESTABLISHMENT AND REGROWTH OF SELF-SEEDED ITALIAN RYEGRASS - (Abstract Only)

Bartholomew, P.W., Williams, R.D. 2004. Re-establishment and regrowth of self-seeded Italian ryegrass [abstract]. Agronomy Society of America, Crop Science Society of America, Soil Science Society of America Meeting. Paper No. 5636.

EFFECTS OF WETTING/DRYING CYCLES AND ALLELOCHEMICALS ON GERMINATION AND EARLY GROWTH OF ITALIAN RYEGRASS - (Abstract Only)

Majors, C.S., Holland, D.D., Bartholomew, P.W., Williams, R.D. 2004. Effects of wetting/drying cycles and allelochemicals on germination and early growth of Italian ryegrass [abstract]. Research Day Abstracts: Regional Universities Research Day. Paper No. S-201. p. 50.

ANALYSIS OF HISTORICAL WINTER WHEAT YIELDS IN OKLAHOMA - (Abstract Only)

Williams, R.D., Bartholomew, P.W., Williams, C. 2004. Analysis of historical winter wheat yields in Oklahoma [abstract]. Agronomy Society of America, Crop Science Society of America, Soil Science Society of America Meeting. Paper No. 6269.

EFFECTS OF WETTING/DRYING CYCLES, MOISTURE POTENTIAL ON GERMINATION AND EARLY SEEDLING GROWTH - (Abstract Only)

Holland, D.D., Majors, C.S., Williams, R.D., Bartholomew, P.W. 2004. Effects of wetting/drying cycles, moisture potential on germination and early seedling growth [abstract]. Research Day Abstracts: Regional Universities Research Day. Paper No. S-201. p. 50.

DOES AN ARIDITY INDEX EXPLAIN THE HISTORICAL TRENDS IN WINTER WHEAT YIELDS? - (Abstract Only)

Williams, R.D., Bartholomew, P.W., Williams, C. 2004. Does an aridity index explain the historical trends in winter wheat yields [abstract]? Southern Section of the American Society of Agronomy Branch Meeting. Paper No. s-williams324918-poster. 2004 CDROM.

SOIL MOISTURE POTENTIAL AFFECTS PHYLLOCHRON IN COOL-SEASON GRASSES - (Abstract Only)

Bartholomew, P.W., Williams, R.D. 2004. Soil moisture potential affects phyllochron in cool-season grasses [abstract]. Southern Section of the American Society of Agronomy Branch Meeting. Paper No. s-bartholomew204960-poster. 2004 CDROM.

SEED DEPOSITION OF ITALIAN RYEGRASS AFFECTED BY FORAGE HARVEST MANAGEMENT - (Abstract Only)

Bartholomew, P.W., Williams, R.D. 2003. Seed deposition of Italian ryegrass affected by forage harvest management [abstract]. Agronomy Society of America, Crop Science Society of America, Soil Science Society of America Meeting. Abstract No. c06-bartholomew863018-poster.

MOISTURE POTENTIAL AFFECTS RATE OF LEAF APPEARANCE IN ITALIAN RYEGRASS AND TALL WHEATGRASS - (Abstract Only)

Terrell, N.C., Bartholomew, P.W., Williams, R.D. 2003. Moisture potential affects rate of leaf appearance in Italian ryegrass and tall wheatgrass [abstract]. Research Day Abstracts: Regional Universities Research Day. Paper No. S-354. p. 109.

POTENTIAL WIND DISTRIBUTION OF ITALIAN RYEGRASS SEED - (Abstract Only)

Williams, R.D., Bartholomew, P.W. 2003. Potential wind distribution of Italian ryegrass seed [abstract]. Agronomy Society of America, Crop Science Society of America, Soil Science Society of America Meeting. Paper No. c06-williams203285-poster. 2003 CDROM.

SEED HYDRATION-DEHYDRATION IN AN ALLELOCHEMICAL AFFECTS SEED GERMINATION AND SEEDLING GROWTH - (Abstract Only)

Peal, L.K., Williams, R.D., Bartholomew, P.W. 2003. Seed hydration-dehydration in an allelochemical affects seed germination and seedling growth. Proceedings of Southern Weed Science Society. v. 56. Abstract p. 335.

COMPARISON OF HISTORICAL WEATHER RECORDS TO DETERMINE PROBABILITIES IN RAINFALL EVENTS AND AMOUNTS - (Abstract Only)

KING, K.E., WILLIAMS, R.D., BARTHOLOMEW, P.W. COMPARISON OF HISTORICAL WEATHER RECORDS TO DETERMINE PROBABILITIES IN RAINFALL EVENTS AND AMOUNTS. SOUTHERN BRANCH OF AMERICAN SOCIETY OF AGRONOMY ABSTRACTS. 2003. Abstract p. 66.

AGRO-INDUSTRIAL BY-PRODUCTS, COWPEA RESIDUES AND UREA-TREATMENT OF HAY FOR SUPPLEMENTARY DRY SEASON FEEDING OF MATURE ZEBU OXEN IN MALI - (Peer Reviewed Journal)

BARTHOLOMEW, P.W., LY, R., DOUMBIA, M., KHIBE, T., KONE, N., TRAORE, B., BA, S. AGRO-INDUSTRIAL BY-PRODUCTS, COWPEA RESIDUES AND UREA-TREATMENT OF HAY FOR SUPPLEMENTARY DRY SEASON FEEDING OF MATURE ZEBU OXEN IN MALI. Tropical Animal Health and Production. 15(2). http://www.cipav.org.co/lrrd/lrrd15/2/bart152.htm. 2003.

PRELIMINARY STUDIES OF SELF-SEEDING WARM-SEASON LEGUMES FOR LOW-INPUT FORAGE PRODUCTION - (Abstract Only)

BARTHOLOMEW, P.W., WILLIAMS, R.D. PRELIMINARY STUDIES OF SELF-SEEDING WARM-SEASON LEGUMES FOR LOW-INPUT FORAGE PRODUCTION. AMERICAN SOCIETY OF AGRONOMY MEETINGS. 2003. p. 67.

TEMPORAL AND SPATIAL ANALYSIS OF SOIL WATER RESOURCES AS A DECISION AID IN SELECTING SPRING AND FALL PLANTING DATES FOR FORAGES. - (Abstract Only)

WILLIAMS, R.D., BARTHOLOMEW, P.W. TEMPORAL AND SPATIAL ANALYSIS OF SOIL WATER RESOURCES AS A DECISION AID IN SELECTING SPRING AND FALL PLANTING DATES FOR FORAGES. CD-ROM. Agronomy Society of America, Crop Science Society of America, Soil Science Society of America Meeting. 2003. Abstract No. A03-williams103721-Poster.

DOES SEED SIZE AFFECT THE RATE OF GERMINATION AND EARLY SEEDLING GROWTH IN HAIRY VETCH? - (Abstract Only)

EKPO, J.I., BARTHOLOMEW, P.W., WILLIAMS, R.D. DOES SEED SIZE AFFECT THE RATE OF GERMINATION AND EARLY SEEDLING GROWTH IN HAIRY VETCH?. RESEARCH DAY ABSTRACTS: REGIONAL UNIVERSITIES RESEARCH DAY. 2002. P. 74.

COOL-SEASON GRASS DEVELOPMENT RESPONSE TO ACCUMULATED TEMPERATURE FOLLOWING VARIABLE EXPOSURE TO BELOW-FREEZING TEMPERATURES - (Abstract Only)

BARTHOLOMEW, P.W., WILLIAMS, R.D. COOL-SEASON GRASS DEVELOPMENT RESPONSE TO ACCUMULATED TEMPERATURE FOLLOWING VARIABLE EXPOSURE TO BELOW-FREEZING TEMPERATURES. CD-ROM. AGRONOMY SOCIETY OF AMERICA, CROP SCIENCE SOCIETY OF AMERICA, SOIL SCIENCE SOCIETY OF AMERICA MEETING. 2002. (A03-bartholomew101028-Poster)

THE EFFECT OF ACCUMULATED TEMPERATURE ON SEEDLING GROWTH AND DEVELOPMENT IN COOL-SEASON FORAGES. - (Abstract Only)

BARTHOLOMEW, P.W., WILLIAMS, R.D. THE EFFECT OF ACCUMULATED TEMPERATURE ON SEEDLING GROWTH AND DEVELOPMENT IN COOL-SEASON FORAGES. AMERICAN SOCIETY OF AGRONOMY MEETINGS. 2001. Abstract No. a03-bartholomew133701-o. CD-ROM.

SIMPLE PRECIPITATION MODELS AS DECISION AIDS FOR OUTREACH SPECIALISTS. - (Abstract Only)

WILLIAMS, R.D., BARTHOLOMEW, P.W. SIMPLE PRECIPITATION MODELS AS DECISION AIDS FOR OUTREACH SPECIALISTS.. AGRONOMY ABSTRACTS. 2001. Abstract No. a03-williams150220-p. CD-ROM.

WEEDS IN PASTURES - (Popular Publication)

BARTHOLOMEW, P.W. WEEDS IN PASTURES. LANGSTON UNIVERSITY FACT SHEET. 2001. Fact Sheet NO. 4. p. 1.