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| Web URL(s): | http://www.newss.org/proceedings/proceedings_1990_vol44.pdf#page=135
Last checked: 07/25/2013
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): | Mahoney, M. J.;
Dernoeden, P. H. |
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| Author Affiliation: | University of Maryland |
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| Title: | Crabgrass control and bentgrass tolerance with multiple low-rate applications of fenoxaprop |
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| Meeting Info.: | Held: January 3,4,5, 1990; Boston MA |
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| Source: | Proceedings of the 44th Annual Meeting of the Northeastern Weed Science Society. Vol. 44, 1990, p. 135. |
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| Publishing Information: | Ithaca, NY: Northeastern Weed Science Society |
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| # of Pages: | 1 |
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| Keywords: | TIC Keywords: Digitaria ischaemum; Agrostis stolonifera; Lolium perenne; Fenoxaprop-ethyl
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| Geographic Terms: | Tank-mixed herbicides |
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| Abstract/Contents: | "Multiple fenoxaprop treatments were applied to creeping bentgrass (Agrostis palustris Huds. 'Penncross') mowed at putting green height at Easton, MD and at Silver Spring, MD beginning on April 26 and May 8, 1989, respectively. Concurrent fenoxaprop applications were made to perennial ryegrass (Lolium perenne L.) infested with smooth crabgrass (Digitaria ischaemum (Schreb) Muhl.) at both sites. Crabgrass was in the 1-2 leaf stage during the initial applications. All experiments were arranged in a randomized complete block with 4 replications per treatment. Treatments were applied with 8003 nozzles in 40 gallons/acre at Easton, and with 8004 nozzles in 50 gallons/acre at Silver Spring. Visual quality bentgrass data were collected weekly during the studies and crabgrass control data expressed as percent cover compared with untreated plots were collected 2 weeks and 1 week following the last fenoxaprop application at Easton and Silver Spring, respectively. Efficacy data indicates that fenoxaprop rates of 0.032 and 0.04 lb/A applied at 2 or 3 week intervals provided excellent season-long crabgrass control, as presented in Table 1. Fenoxaprop applied at 0.024 lb/A on 2 and 3 week intervals provided fair-good crabgrass control. Four week application intervals however, provided crabgrass control that was generally inferior to the 2 or 3 week interval at all rates. Table 2 shows bentgrass quality data from selected dates. Bentgrass quality varied throughout the study period and between study locations. Fenoxaprop applied at 0.024 lb/A resulted in acceptable quality at all intervals. Fenoxaprop applications at 0.032 lb/A applied at 2 or 3 week intervals resulted in bentgrass quality that varied from acceptable to unacceptable throughout the course of the studies. With a 4 week interval, 0.032 lb/A fenoxaprop reduced quality, but the level of injury would be considered marginally acceptable for putting greens. The 0.04 ln/A fenoxaprop treatments generally reduced quality to unacceptable levels at all intervals at both locations. At Easton, however, bentgrass treated on a 4 week interval had recovered to an acceptable level by 10 WAT. Further research is necessary to define bentgrass variety tolerance, how bentgrass cutting height affects tolerance, and if tank mixing other pesticides with fenoxaprop alters bentgrass tolerance." |
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| Language: | English |
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| References: | 0 |
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| Note: | Tables
This item is an abstract only! |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Mahoney, M. J., and P. H. Dernoeden. 1990. Crabgrass control and bentgrass tolerance with multiple low-rate applications of fenoxaprop. Proc. Annu. Meet. Northeast. Weed Sci. Soc. 44:p. 135. |
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| Web URL(s):
http://www.newss.org/proceedings/proceedings_1990_vol44.pdf#page=135
Last checked: 07/25/2013
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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