Hostname: page-component-586b7cd67f-2plfb Total loading time: 0 Render date: 2024-11-28T04:23:21.075Z Has data issue: false hasContentIssue false

Quantifying the impact of a weed in a perennial ryegrass–white clover pasture

Published online by Cambridge University Press:  20 January 2017

Jonathan M. C. Stephens
Affiliation:
Department of Biological Sciences, P.O. Box 3105, University of Waikato, Hamilton, New Zealand 2001
Michelle L. Verkaaik
Affiliation:
AgResearch, P.O. Box 60, Lincoln, New Zealand 8152
Anis Rahman
Affiliation:
AgResearch, P.O. Box 3123, Ruakura, Hamilton, New Zealand 2001

Abstract

Any plant not sown from seed is often labeled a weed in improved pastures of New Zealand. Most improved pastures are a mix of perennial ryegrass and white clover but generally are infested with broadleaf weeds. Changes in forage production due to individual weeds were determined using measurements of perennial ryegrass and white clover before and after dairy cattle, beef cattle, or sheep grazing under, near, and far from individual plants of six rosette-forming weed species throughout a growing season. The larger weeds, bull thistle and musk thistle, reduced the amount of forage utilized 42 and 72%, respectively, in beef cattle– and sheep-grazed hill-country pastures. Forage production under and near Canada thistle, hedge mustard, broadleaf plantain, and hairy buttercup in a dairy pasture was greater (136, 140, 178, and 450%, respectively) than in the control areas. Although the dairy pasture was grazed following recommended grazing procedures, our results indicate that this grazing system was not maximizing forage yield potentials of perennial ryegrass and white clover and that these weeds served as an indicator that the pasture was being overgrazed.

Type
Weed Management
Copyright
Copyright © Weed Science Society of America 

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

Literature Cited

Clement, C. R., Hopper, M. J., Jones, L. H. P., and Leafe, E. L. 1978. The uptake of nitrate by Lolium perenne from flowing nutrient solution: II. Effect of light, defoliation, and relationship to CO2 flux. J. Exp. Bot 29:11731183.CrossRefGoogle Scholar
Haggar, R. J., Oswald, A. K., and Richardson, W. G. 1986. A review of the impact and control of creeping thistle (Cirsium arvense L.) in grassland. Crop. Prot 5:7376.CrossRefGoogle Scholar
Hartley, M. J. 1983. Effects of Scotch thistles on sheep growth rates. Proc. 36th N. Z. Weed Pest Control Conf 36:8689.Google Scholar
Jarman, P. J. and Sinclair, A. R. E. 1979. Feeding strategy and the pattern of resource partitioning in ungulates. Pages 130163 in Sinclair, A.R.E. and Norton-Griffiths, M. eds. Serengeti Dynamics of an Ecosystem. Chicago: University of Chicago Press.Google Scholar
Kelly, D. and Popay, A. I. 1985. Pasture production lost to unsprayed thistles at two sites. Proc. 38th N. Z. Weed Pest Control Conf 38:115118.Google Scholar
Popay, A. I. and Medd, R. W. 1990. The biology of Australian weeds, 21, Carduus nutans L. ssp. nutans . Plant Prot. Q 5:313.Google Scholar
Radosevich, S., Holt, J., and Ghersa, C. 1997. Weed Ecology, Implications for Management. New York: J. Wiley. Pp. 164167.Google Scholar
Roy, B., Popay, I., Champion, P., James, T., and Rahman, A. 1998. An Illustrated Guide to Common Weeds of New Zealand. Canterbury, New: Zealand: New Zealand Plant Protection Society. Pp. 52, 59, 61, 105, 208, 228.Google Scholar
Smetham, M. L. 1990. Pasture management. Pages 197240 in Langer, R.H.M. ed. Pastures, Their Ecology and Management. Auckland, New Zealand: Oxford University Press.Google Scholar
Stephens, J. M. C. 2001. The Impact of Invasive Pasture Weeds in the Waikato Region. . University of Waikato, Hamilton, New Zealand. 129 p.Google Scholar
Thompson, A., Saunders, A. E., and Martin, P. 1987. The effect of nodding thistle (Carduus nutans) on pasture production. Proc. 40th N. Z. Weed Pest Control Conf 40:22225.Google Scholar
Tilman, D., Reich, P. B., Knops, J. M. H., Wedin, D., Mielke, T., and Lehman, C. 2001. Diversity and productivity in a long-term grassland experiment. Science 294:843845.CrossRefGoogle Scholar
Wardle, D. A., Nicholson, K. S., Ahmed, M., and Rahman, A. 1994. In terference effects of the invasive plant Carduus nutans L. against the nitrogen fixation ability of Trifolium repens L. Plant Soil 163:287297.CrossRefGoogle Scholar
Wardle, D. A., Nicholson, K. S., and Rahman, A. 1993a. Influence of plant age on the allelopathic potential of nodding thistle (Carduus nutans L.) against pasture grasses and legumes. Weed Res 33:6978.CrossRefGoogle Scholar
Wardle, D. A., Nicholson, K. S., and Rahman, A. 1993b. Aspects of interactions between nodding thistle (Carduus nutans L.) and pasture grasses and legumes. Pages 355356 in Baker, M. J., Crush, J. R., and Humphreys, L. R. eds. Proceedings of the 17th International Grasslands Congress. Palmerston North, New Zealand.Google Scholar
Wardle, D. A., Nicholson, K. S., and Rahman, A. 1995. Ecological effects of the invasive weed species Senecio jacobaea L. (ragwort) in a New Zealand pasture. Agric. Ecosyst. Environ 56:1928.CrossRefGoogle Scholar