Full TGIF Record # 8637
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Web URL(s):https://stri.lib.msu.edu/vol62-1986/pdf/sptri86062215.pdf
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Publication Type:
i
Report
Content Type:Abstract or Summary only
Author(s):Parr, T. W.
Author Affiliation:Institute of Terrestrial Ecology, Monks Wood Experimental Station, Abbots Ripton, Huntingdon, PE17 2LS, UK
Title:Competition in Turfgrass Mixtures - A Predictive Model
Source:Journal of the Sports Turf Research Institute. Vol. 62, June 1986, p. 215.
Publishing Information:Bingley, England: The Sports Turf Research Institute
Keywords:TIC Keywords: Mixtures; Competition; Lolium perenne; Phleum pratense; Festuca rubra subsp. rubra; Agrostis castellana; Poa pratensis; Growth
Abstract/Contents:"A model, which can be used to predict the species composition of established turf from the initial seed density of each species, is being developed. The model predicts the density and mean plant weight of each species throughout the first year of establishment. It required data on percentage germination, initial seedling size, initial growth rates, final turf biomass and mortality rates for each species in monoculture. Competition in mixtures is then modelled on the assumption that species are equivalent in their resource requirements and that, during establishment, the outcome of competition is determined by the relative rates at which species occupy the limited available space (or the resources which that space contains). Data collected from field experiments on five grass species (Lolium perenne, Phleum pratense, Festuca rubra, Agrostis castellana and Poa pratensis) were used to test the model. The model predictions of the percentage of each species in mixtures were accurate, usually to within 10% of the field data. The model can also be used to investigate the effects of varying seed rates, species proportions and nitrogen fertilizer on turf dynamics and weed invasion. It demonstrates that recommended seed rates of over 25 g m-2 are extravagantly high. If the model is developed to cover a wider range of environments and management regimes then it could form the basis for a more rational choice of seed mixtures and seed rates."
Language:English
References:0
Note:Abstract of a paper presented at the 5th Discussion Meeting on Amenity Grass Research held at the University of Reading, December 18-20, 1985.
This item is an abstract only!
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Parr, T. W. 1986. Competition in Turfgrass Mixtures - A Predictive Model. J. Sports Turf Res. Inst. 62:p. 215.
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https://stri.lib.msu.edu/vol62-1986/pdf/sptri86062215.pdf
    Last checked: 05/05/2017
    Requires: PDF Reader
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MSU catalog number: SB 433 .A1 S63
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