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| Web URL(s): | https://stri.lib.msu.edu/vol49-1973/pdf/sptri73049113.pdf#page=1
Last checked: 09/5/2006
Requires: PDF Reader
Notes: Available to TGIF and STRI users |
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| Access Restriction: | Certain MSU-hosted archive URLs may be restricted to legacy database members. |
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| Publication Type:
| Report |
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| Content Type: | Q & A |
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| Corporate Author(s): | Sports Turf Research Institute |
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| Title: | Knotweed control |
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| Section: | Enquiries and replies
Other records with the "Enquiries and replies" Section
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| Source: | Journal of the Sports Turf Research Institute. Vol. 49, 1973, p. 113. |
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| Publishing Information: | Bingley, West Yorkshire, UK: The Sports Turf Research Institute |
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| # of Pages: | 1 |
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| Question: | "Last year our pitch had a lot of knotweed which seemed to die out in the early winter leaving the turf thin. Our groundsman thinks we will have the same trouble in the coming year and we are anxious to do something about it. What treatments do you recommend, bearing in mind that much of the pitch will have to be re-seeded?" |
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| Answer/Response: | "Bearing in mind the problems associated with renovation we suggest as follows:- 1. If knotweed seedlings are present before renovation, spray with 2,4-D. (This has some effect on seedlings, but not on mature plants.) 2. If possible, wait about ten days before re-seeding (as 2,4-D has some slight persistance [persistence] on the soil surface). If delay is impossible, increase seed rate. 3. When ryegrass seedlings have 2-3 expanded leaves (approximately three weeks after germination is first visible, depending on conditions for growth), ioxynil can be used (e.g. in Actrilawn) at the rate recommended for young turf. Alternatively, half-normal rates of weedkillers containing MCPA with dicamba (e.g. Cambadex) could safely be used at the 2-3 leaf stage, provided growth is vigorous and there is no risk of drought. These herbicides, at the rates safe for the young grass are, by themselves, only likely to kill seedlings and very young plants of knotweed, but if established plants of knotweed have been weakened by earlier spraying and by re-seeding cultivations there may be some useful effect on them. 4. Later in the summer, when the ryegrass is well established (tillering, and having been cut several times) use can be made, except in periods of drought, of the full normal rate of weedkillers such as 2,4-D/mecoprop or the MCPA/dicamba type." |
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| Keywords: | TIC Keywords: Application rates; Herbicide recommendations; Herbicide timing; Polygonum; Weed control
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| Language: | English |
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| References: | 0 |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Sports Turf Research Institute. 1973. Knotweed control. J. Turfgrass Sports Surf. Sci. 49:p. 113. |
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| Web URL(s):
https://stri.lib.msu.edu/vol49-1973/pdf/sptri73049113.pdf#page=1
Last checked: 09/5/2006
Requires: PDF Reader
Notes: Available to TGIF and STRI users |
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MSU catalog number: SB 433 .A1 S63 |
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