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Estimating Grazing Index Values for Plants from Arid Regions

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Estimating Grazing Index Values for Plants from Arid Regions Published bimonthly—January, March, May, July, 537 Tiller recruitment patterns and biennial tiller production in prairie sandreed by September, November J.R. Hendrickson, L.E. Moser, and P.E. Reece Copyright 2000 by the Society for Range 544 Seed biology of rush skeletonweed in sagebrush steppe by Julia D. Liao, Stephen Management B. Monsen, Val Jo Anderson, and Nancy L. Shaw INDIVIDUALSUBSCRIPTION is by membership in the Society for Range Management. 550 Seed production in sideoats grama populations with different grazing histories by Steven E. Smith, Rebecca Mosher, and Debra Fendenheim LIBRARY or other INSTITUTIONAL SUBSCRIP- TIONS on a calendar year basis are $105.00 for the United States postpaid and $123.00 for other 556 Hoary cress reproduction in a sagebrush ecosystem by Larry Larson, Gary countries, postpaid. Payment from outside the Kiemnec, and Teresa Smergut United States should be remitted in US dollars by international money order or draft on a New York bank. Book Review 560 Old Fences, New Neighbors, by Peter R. Decker BUSINESS CORRESPONDENCE, concerning subscriptions, advertising, reprints, back issues, and related matters, should be addressed to the Managing Editor, 445 Union Blvd., Suite 230, Lakewood, Colorado 80228. E D I TO R I A L CORRESPONDENCE, concerning manuscripts or other editorial matters, should be addressed to the Editor, Gary Frasier, 7820 Stag Hollow Road, Loveland, Colorado 80538. Page proofs should be returned to the Production Editor, 445 Union Blvd., Lakewood, Colorado 80228. INSTRUCTIONS FOR AUTHORS appear on the inside back cover of most issues. THE JOURNAL OF RANGE MANAGEMENT (ISSN 0022-409X) is published bimonthly for $56.00 per year by the Society for Range Management, 445 Union Blvd., Ste 230, Lakewood, Colorado 80228. 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Minnesota St. Pullman, Washington 99164-6410 JOE E. BRUMMER Carson City, Nevada 89703 e-mail address: Mt. Meadows Res. Ctr. [email protected] P.O. Box 598 MICHAEL H. RALPHS Gunnison, Colorado 81230 Electronic JRM Editor USDA-ARS M.KEITH OWENS Poisonous Plant Lab Texas A&M University DAVIDGANSKOPP USDA-ARS 1150 E 1400 N Research Center Logan, Utah 84341-2881 1619 Garner Field Road HC-71 4.51 HWY 205 Ulvade, Texas Burns, Oregon 97720 e-mail address: [email protected] THE SOCIETY FOR RANGE MANAGEMENT, founded in 1948 as the American Society of Range Management, is a nonprofit association incorporated under the laws of the State of Wyoming. It is recognized exempt from Federal income tax, as a scientific and educa- tional organization, under the provisions of Section 501(c)(3) of the Internal Revenue Code, and also is classed as a public foundation as described in Section 509(a)(2) of the Code. The name of the Society was changed in 1971 by amendment of the Articles of Incorporation. The objectives for which the corporation is established are: —to properly take care of the basic rangeland resources of soil, plants, and water; President JOHN L. McLAIN —to develop an understanding of range ecosystems and of the principles applicable to the 340 N. Minnesota St. management of range resources; Carson City, Nevada 89703-4152 —to assist all who work with range resources to keep abreast of new findings and 1st Vice-President techniques in the science and art of range management; JAMES T. O’ROURKE 61 Country Club Road —to improve the effectiveness of range management to obtain from range resources the Chadron, Nebraska 69337 products and values necessary for man’s welfare; 2nd Vice-President Rodney K. Heitschmidt —to create a public appreciation of the economic and social benefits to be obtained from USDA-ARS the range environment; Ft. Keogh LARRL Rt 1, Box 2021 —to promote professional development of its members. Miles City, Montana 59301-9801 Membership in the Society for Range Management is open to anyone engaged in or interested in Executive Vice-President any aspect of the study, management, or use of rangelands. Please contact the Executive Vice- J. CRAIG WHITTEKIEND President for details. 445 Union Blvd., Ste. 230 Lakewood, Colorado 80228 (303) 986-3309 Fax: (303) 986-3892 e-mail address: [email protected] The Journal of Range Management is a publication of the Society for Range Directors Management. It serves as a forum for the presentation and discussion of facts, ideas, and philosophies 1998-2000 pertaining to the study, management, and use of rangelands and their several resources. Accordingly, all PATRICK L. SHAVER material published herein is signed and reflects the individual views of the authors and is not necessari- 2510 Meadow Lane ly an official position of the Society. Manuscripts from anyone—nonmembers as well as members—are Woodburn, Oregon 97071-3727 welcome and will be given every consideration by the editors. Editorial comments by an individual are CAROLYNHULL SIEG also welcome and, subject to acceptance by the editor, will be published as a “Viewpoint.” Forest &Range Experiment Station 501 E. Saint Joseph Street In Cooperation With: Some of the articles appearing in The Journal of Range Management (JRM) School of Mines Campus are presented in cooperation with The American Forage and Grassland Council (AFGC). This coopera- Rapid City, South Dakota 57701-3901 tion consists of JRM acceptance of professional papers in forage grazing management and related sub- 1999-2001 ject areas from AFGC members and the appointment of two AFGC affiliated associate editors JAMES LINEBAUGH to JRM’s Editorial Staff. The American Forage and Grassland Council Offices: P.O. Box 94, 3 Yhvona Dr. Georgetown, Texas 78627; Larry Jeffries, President; Dana Tucker, Executive Secretary. Carson City, NV89706-7717 GLENSECRIST Idaho Dept. of Agriculture 3818 S. Varian Ave. Boise, Idaho 83709-4703 2000-2002 RICHARDH. Hart Contribution Policy: The Society for Range Management may accept donations of real USDA-ARS and/or personal property subject to limitations set forth by State and Federal law. All donations shall be High Plains Grasslands Station 8408 Hildreth Rd. subject to management by the Executive Vice President as directed by the Board of Directors and their Cheyenne, Wyoming 82009-8809 discretion in establishing and maintaining trusts, memorials, scholarships, or other types of funds. Individual endowments for designated purposes can be established according to Society policies. Gifts, DONKIRBY bequests, legacies, devises, or donations not intended for establishing designated endowments will be North Dakota State University deposited into the SRM Endowment Fund. Donations or requests for further information on Society poli- Animal &Range Science cies can be directed to the Society for Range Management, Executive Vice-President, 445 Union Blvd., Fargo, North Dakota 58105 Lakewood, Colorado 80228. We recommend that donors consult Tax Advisors in regard to any tax con- The term of office of all elected officers and sideration that may result from any donation. directors begins in February of each year during the Society’s annual meeting. J. Range Manage. 53: 466–470 September 2000 Grazing impacts on selected soil parameters under short- term forage sequences E. MAPFUMO, D.S. CHANASYK, V.S. BARON, AND M.A. NAETH Post-doctoral fellow and professor with the Department of Renewable Resources, University of Alberta, Alberta, Canada T6G 2H1, and research scientist with Lacombe Research Centre, Agriculture and Agri-Food Canada, 6000 C&E Trail, Lacombe, Alberta, Canada T4L 1W1, and professor, Dept. Renewable Resources University of Alberta, Alberta, Canada T6G 2H1. Corresponding author, Chanasyk, (Email address: [email protected]; Fax no (780) 492-4323. Abstract Resumen Long-term cultivation is known to change soil physical and Se sabe que el cultivar los terrenos por un largo tiempo cambia chemical properties, but little is known about whether short- la propiedades físicas y químicas del suelo, sin embargo pero term agricultural practices, such as rotational grazing, can initi- poco se sabe acerca de que si la practicas agrícolas de corto ate such changes. This study investigated the impacts of 3 graz- plazo, tales como el apacentamiento rotacional, puede iniciar ing intensities (heavy, medium, and light) and 4 forages on select- dichos cambios.
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