Full TGIF Record # 643
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Web URL(s):http://www.newss.org/proceedings/proceedings_1980_vol34.pdf#page=380
    Last checked: 07/29/2013
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Publication Type:
i
Report
Content Type:Abstract or Summary only
Author(s):Sawyer, C. D.; Wakefield, R. C.
Title:Invasion of roadside turfgrasses by Aristida oligantha and other weedy annual grasses
Source:Proceedings of the Annual Meeting of the Northeastern Weed Science Society. Vol. 34, 1980, p. 380.
Publishing Information:Ithaca, NY: Northeastern Weed Science Society
Keywords:TIC Keywords: Digitaria; Aristida oligantha; Aristida dichotoma; Disodium methyl arsenate; Siduron; Danthonia spicata; Deicing salts
Abstract/Contents:Successful establishment and maintenance of stands of perennial grass or perennial grass-legume mixtures is essential in stabilizing soils along highways. Loss of vegetative cover may result in soil erosion and cause sedimentation and pollution in the immediate roadside environment. Successional patterns occurring along many Rhode Island highways are resulting in the displacement of seeded grass species by less desirable perennial grasses (e.g. Andropogon spp., Danthonia spicata), perennial broadleaf weeds (e.g. Hieracium spp., Plantago spp.) and annual grasses (e.g. Digitaria spp., Aristida spp. and Sporobolus spp.). Emphasis in this study is placed on Aristida oligantha and A. dichotoma as these species have formed relatively large monospecific stands in short periods of time. Studies of Aristida spp. indicate that, like crabgrasses, germination and growth coincide with dormancy of perennial grasses. The rapid spread of Aristida spp. indicates superior competitive abilities and studies have suggested that biochemical inhibition is involved. Other factors contributing to the deterioration of seeded species appear to be poor mowing practices, low soil fertility, and damage from deicing salts. Experiments are being conducted to investigate the effect of mowing height and fertility levels on deterioration of seeded turf, and herbicides effective in controlling aristida spp. Results of preliminary experiments indicate that inadequate management practices contributed to deterioration of desirable grass species and subsequent invasion by Aristida spp. Siduron preemergent and DSMA postemergent herbicides were effective in controlling A. oligantha; however, more than a single application would be necessary to adequately control A. dichotoma. The ecology of A. oligantha is being studied, with emphasis on the allelopathic effects of the species on seeded perennial grasses.
Language:English
Note:This item is an abstract only!
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Sawyer, C. D., and R. C. Wakefield. 1980. Invasion of roadside turfgrasses by Aristida oligantha and other weedy annual grasses. Proc. Annu. Meet. Northeast. Weed Sci. Soc. 34:p. 380.
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http://www.newss.org/proceedings/proceedings_1980_vol34.pdf#page=380
    Last checked: 07/29/2013
    Requires: PDF Reader
    Notes: Item is within a single large file
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MSU catalog number: SB 610 .N62
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