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| Web URL(s): | http://www.newss.org/proceedings/proceedings_2000_vol54.pdf#page=67
Last checked: 07/24/2013
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): | Mitra, S.;
Vrabel, T. E. |
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| Author Affiliation: | Mitra: University of Massachusetts, Department of Plant and Soil Sciences, Amherst, MA; Vrabel: Eco Soil Systems,Inc., San Diego, CA |
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| Title: | Biologically based weed control strategies for Poa annua management using Xanthomonas campestris pv. poannua |
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| Section: | Biologically-based weed control
Other records with the "Biologically-based weed control" Section
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| Meeting Info.: | Baltimore, MD: January 3-6, 2000 |
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| Source: | Proceedings of the 54th Annual Meeting of the Northeastern Weed Science Society. Vol. 54, 2000, p. 67. |
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| Publishing Information: | College Park, MD: Northeastern Weed Science Society |
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| # of Pages: | 1 |
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| Keywords: | TIC Keywords: Biological control; Weed control; Poa annua control; Xanthomonas campestris; Golf courses; Mowing height; Golf greens; Golf fairways; Biogation; Agrostis stolonifera; Agrostis canina; Poa annua var. annua; Poa annua var. reptans
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| Abstract/Contents: | "Annual bluegrass (Poa annua L.) is a widespread serious weed species of golf turf. Its competitive nature when managed at close mowing heights on golf course greens and fairways allows annual bluegrass to outcompete desired specied such as creeping bentgrass (Agrostis palustris Huds.) and take over as the dominant species. The susceptibility of annual bluegrass to environmental stresses and diseases as well as its undesirable characteristic of prolific seed head production in early summer make it a major turf management problem for the golf course superintendent. Eco Soil Systems, Inc. initiated in 1998 an EUP to evaluate for commercializing a strain of Xanthomonas campestris pv. poannua that is formulated as a liquid containing live active bacteria in high concentrations. This product has the flexibility of being marketed as a packaged material delivered directly to the end user or, in the near future, increased at the application site in conjunction with the BioJectā¢ on site fermentation system. This report is a summary of the findings from the applications made in 1999. The objective of the application program is to cause significant levels of infection in annual bluegrass plants which would weaken them and make them more susceptible to mortality caused by cold stress over the winter, and by heat and drought stress in the early summer. Applications in 1999 began when mid day air temperatures reached 18 degrees C. Infection rates were similar to those seen in 1998 with leaf tissue analysis of Poa annua plants sampled from treated golf courses shows [showing] an 80% or better infection success rate. Initial infection symptoms are seen as an etiolation of seed stalks and stems that is followed by subsequent chlorosis and epinasty of affected plants. Infection and symptoms occurred in both the annual (P. annua ssp. annua) and perennial (P. annua ssp. reptans) annual bluegrass subspecies. Annual bluegrass infection and mortality levels were greater when applications were made at temperatures between 24 and 31 degrees C and turf was maintained at lower irrigation levels following treatment. Applications of growth regulators such as paclobutrazol prior to Xanthomonas application weakened the Poa annua and increased effectiveness. Desirable species such as creeping bentgrass (Agrostis palustris Huds.) and velvet bentgrass (Agrostis canina L.) are not affected by Xanthomonas campestris pv. Poannua regardless of growth stage." |
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| Language: | English |
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| References: | 0 |
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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):
Mitra, S., and T. E. Vrabel. 2000. Biologically based weed control strategies for Poa annua management using Xanthomonas campestris pv. poannua. Proc. Annu. Meet. Northeast. Weed Sci. Soc. 54:p. 67. |
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| Web URL(s):
http://www.newss.org/proceedings/proceedings_2000_vol54.pdf#page=67
Last checked: 07/24/2013
Requires: PDF Reader
Notes: Item is within a single large file |
| 
MSU catalog number: SB 610 .N62 v. 54 |
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