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| Web URL(s): | http://archive.lib.msu.edu/tic/tgtre/article/1999nov1a.pdf
Last checked: 01/09/2013
Requires: PDF Reader |
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| Publication Type:
| Professional |
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| Author(s): | Danneberger, Karl |
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| Author Affiliation: | Department of Horticulture and Crop Science, The Ohio State University, and Senior Science Editor, TurfGrass TRENDS |
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| Title: | Weeds: Shedding light on an old foe |
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| Section: | Weed control
Other records with the "Weed control" Section
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| Source: | TurfGrass TRENDS. Vol. 8, No. 11, November 1999, p. 1-3. |
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| Publishing Information: | Cleveland, OH: Advanstar Communications |
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| # of Pages: | 3 |
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| Keywords: | TIC Keywords: Weeds; Photosynthetic pathway; Photosynthesis; Weed identification; Weed control; Carbon dioxide; Dicotyledons; Monocotyledons
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| Abstract/Contents: | Discusses weed control based on grouping according to life cycle and morphological characteristics. Suggests that "recognizing other ways of grouping weeds can help turfgrass managers devise effective management control programs." Explains that "classification of weeds can also be based on their photosynthetic pathway." Details the process of photosynthesis, stating that "the first is the light-dependent reaction where radiant energy is converted into biologically usefull energy called ATP (adenosine triphosphate). The second, or dark (light independent), step is the storage of this energy into the chemical bonds of sugars and carbohydrates. Central to the light-independent reaction is the fixation of carbon dioxide (CO2), known as the Calvin cycle." Mentions that "in many tropical plants, CO2 is initially fixed to phosphoenolpyruvate (PEP) prior to entering the Calvin cycle. This additional step is known as the C4 Dicarboxlic Acid Pathway." Reports that "in 1969, [C. C.] Black proposed that plant-weed competition could be based on photosynthetic efficiency...Under increasing temperature and light intensity, the more efficient capture of CO2 (C4) would provide a competitive advantage over the less efficient C3 plants." States that "Kentucky bluegrass has a distinct disadvantage against C4 weeds like crabgrass, goosegrass and foxtail during the summertime." Suggests that "control measures can be adjusted to account in the different carbon fixing mechanisms of plants. Pre-emergent herbicide applications targeted at C4 weeds might be reduced or eliminated in shaded conditons where the existing cool season turfgrass is well established." Concludes that "in determining management programs for weeds, [turf managers should] consider the carbon-fixing pathway. Increased weed control and more efficient use of herbicides will be the outcome." |
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| Language: | English |
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| References: | 2 |
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| Note: | Distributed within Golfdom of same date/year.
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Danneberger, K. 1999. Weeds: Shedding light on an old foe. TurfGrass Trends. 8(11):p. 1-3. |
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| Web URL(s):
http://archive.lib.msu.edu/tic/tgtre/article/1999nov1a.pdf
Last checked: 01/09/2013
Requires: PDF Reader |
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MSU catalog number: SB 433 .T874 |
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