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| Web URL(s): | http://www.newss.org/proceedings/proceedings_1981_vol35.pdf#page=342
Last checked: 07/29/2013
Requires: PDF Reader
Notes: Item is within a single large file |
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| Publication Type:
| Report |
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| Content Type: | Abstract or Summary only |
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| Author(s): | Sawyer, C. D.;
Lowe, B. A.;
Wakefield, R. C. |
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| Title: | Control of Aristida spp. in the renovation of roadside turfgrasses |
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| Source: | Proceedings of the Annual Meeting of the Northeastern Weed Science Society. Vol. 35, 1981, p. 342. |
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| Publishing Information: | Ithaca, N. Y. : Northeastern Weed Science Society |
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| Keywords: | TIC Keywords: Germination; Siduron; Renovation; Roadside turf; Aristida dichotoma; Aristida oligantha
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| Abstract/Contents: | Attempts to renovate deteriorating stands of roadside turfgrasses by overseeding and fertilization have been unseccessful in areas where prairie three-awn (Aristida oligantha Michx.) and churchmouse three-awn (Aristida dichotoma Michx.) have become the dominant species. Field trials and review of literature suggested that allelopathy as well as competition played a significant role in inhibiting germination and growth of newly-seeded perennial grasses such as red fescue. In a field experiment red fescue was seeded in rows by itself or adjacent to rows of A. oligantha or red fescue. Plots were irrigated and fertilized to minimize competition for water and nutrients. Germination and growth of red fescue growing next to the Aristida was significantly reduced. In bioassay experiments, aqueous extracts of A. oligantha shoot tissue inhibited germination and growth of red fescue as well as several other perennial grasses which are components of Rhode Island's highway seed mix. Aqueous extracts of root tissue were less inhibitory than shoot extracts. Germination of red fescue was inhibited when seeded in pots containing soil amended with ground Aristida shoot tissue. However, germination was not affected when red fescue was seeded in the pots one month after the ground tissue was incorporated into the soil, suggesting that the phytotoxin may be rapidly deactivated in the soil. Main plots on a highway median covered almost exclusively by A. dichotoma and occasional plants of A. oligantha were overseeded (Jacobsen disc seeder) in the fall and following spring with red fescue. Subplots were treated with siduron or bensulide in the spring, or left untreated. Siduron resulted in complete control of both species of Aristida. Bensulide was less effective, providing approximately 75 percent control. At the end of the first growing season, percent cover by red fescue plants was significantly greater in plots treated with siduron (42% cover) or bensulide (24%) than in control plots (6%). |
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| Language: | English |
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| Note: | This item is an abstract only! |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Sawyer, C. D., B. A. Lowe, and R. C. Wakefield. 1981. Control of Aristida spp. in the renovation of roadside turfgrasses. Proc. Annu. Meet. Northeast. Weed Sci. Soc. 35:p. 342. |
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| Web URL(s):
http://www.newss.org/proceedings/proceedings_1981_vol35.pdf#page=342
Last checked: 07/29/2013
Requires: PDF Reader
Notes: Item is within a single large file |
| 
MSU catalog number: SB 610 .N62 |
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