Effects of sheep grazing on a spotted knapweed-infested Idaho fescue community

Journal of Range Management

Volumn 50, Issue 4, 1997, Pages 386-390

  Olson, Bret E ^a   Wallander, Roseann T ^a   Lacey, John R ^a,b  

^a MONTANA STATE UNIVERSITY   (United States)

^b NONE   (United States)

Author keywords

Age class distribution; Centaurea maculosa; Festuca idahoensis; Seed bank; Sheep; Weeds

Indexed keywords

GRAZING; IDAHO FESCUE; SHEEP; SPOTTED KNAPWEED; WEED CONTROL;

ROCKY MOUNTAINS; USA;

ASTERACEAE; CENTAUREA; CENTAUREA MACULOSA; FESTUCA IDAHOENSIS; OVIS ARIES; POA; POA PRATENSIS; POACEAE;

EID: 0030746057     PISSN: 0022409X     EISSN: None     Source Type: Journal    
DOI: 10.2307/4003305     Document Type: Article

References (22)

1. AOSA. 1970. Tetrazolium testing handbook for agricultural seeds. Contribution No. 29. Assoc. of Official Seed Analysts.
2. Cox, J.W. 1989. Observations, experiments and suggestions for research on the sheep-spotted knapweed relationship, p. 79-82. In: P.K. Fay and J.R. Lacey (eds.), Proc. Knapweed Symposium. Montana State Univ., Bozeman, Mont.
3. Davis, E.S., P.K. Fay, T.K. Chicoine, and C.A. Lacey. 1993. Persistence of spotted knapweed (Centaurea maculosa) seed in soil. Weed Sci. 41:57-61.
4. Detling, J.K. and E.L Painter. 1983. Defoliation responses of western wheatgrass populations with diverse histories of prairie dog grazing. Occologia 57:65-71.
5. Gill, J.L. 1981. Evolution of statistical design and analysis of experiments. J. Dairy Sci. 64:1494-1519.
6. Jaindl, R.G., P. Drescher, R.F. Miller, and L.E. Eddleman. 1995. Persistence of Idaho fescue on degraded rangelands: Adaptation to defoliation or tolerance. J. Range Manage. 47:54-59.
7. Kelsey, R.G. and L.J. Locken. 1987. Phytotoxic properties of cnicin, a sesquiterpene lactone from Centaurea maculosa (spotted knapweed). J. Chem. Ecol. 13:19-33.
8. Kelsey, R.G. and R.D. Mihalovich. 1987. Nutrient composition of spotted knapweed (Centaurea maculosa). J. Range Manage. 40:277-281.
9. Kennett, G.A., J.R. Lacey, C.A. Butt, K.M. Olson-Rutz, and M.R. Haferkamp. 1992. Effects of defoliation, shading and competition on spotted knapweed and bluebunch wheatgrass. J. Range Manage. 45:363-369.
10. Lacey, C.A., J.R. Lacey, P.K. Fay, J.M. Story, and D.L. Zamora. 1992. Controlling knapweed on Montana rangeland. Mont State Univ. Ext. Ser. Circ. 311, Bozeman, Mont.
11. Lacey, J.R., K.M. Olson-Rutz, M.R. Haferkamp, and G.A. Kennett. 1994. Effects of defoliation and competition on total nonstructural carbohydrates of spotted knapweed. J. Range Manage. 47:481-484.
12. Leath, K.T. 1990. Crown and root rot complexes, p. 43-44. In: D.L. Stuteville and D.C. Erwin (eds.), Compendium of alfalfa diseases. Second Ed. The Amer. Phytopathological Soc..
13. Locken, L.J. and R.G. Kelsey. 1989. Cnicin concentrations in Centaurea maculosa, spotted knapweed. Biochem. Syst. Ecol. 15:313-320.
14. Mueggler, W.F. 1970. Influence of competition on the response of Idaho fescue to clipping. USDA For. Serv. Res. Pap INT-73.
15. Mueggler, W.F. 1975. Rate and pattern of vigor recovery in Idaho fescue and bluebunch wheatgrass. J. Range Manage. 28:198-204.
16. Olson, B.E. and R.T. Wallander. 1997. Biomass and carbohydrates of spotted knapweed and Idaho fescue after repeated grazing. J. Range Manage. 50:409-412.
17. Paige, K.N. and T.G. Whitham. 1987. Overcompensation in response to mammalian herbivory: The advantage of being eaten. Amer. Nat. 129:408-416.
18. Pechanac, J.F. 1936. Comments on the stem-count method of determining the percentage utilization on range. Ecology 17:329-331.
19. SAS. 1988. Statistical analysis system. SAS Institute Inc. Raleigh, N.C.
20. Tyser, R.W. and C.H. Key. 1988. Spotted knapweed in natural area fescue grasslands: An ecological assessment Northwest Sci. 62:981-987.
21. U.S.D.A. 1995. Natural Resources Conservation Service. Gallatin County Soil Survey. Bozeman, Mont.
22. Watson, A.K. and A.J. Renny. 1974. The biology of Canadian weeds. Centaurea diffusa and C. maculosa. Can. J. Plant Sci. 54:687-701.