Full TGIF Record # 226999
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Web URL(s):http://www.swss.ws/wp-content/uploads/docs/2012 Proceedings-SWSS.pdf#page=98
    Last checked: 08/07/2013
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Publication Type:
i
Report
Author(s):Henry, G. M.; Cooper, T.; Straw, C.; Beck, L. L.; Breeden, G.; Brosnan, J.
Author Affiliation:Henry, Cooper, Straw and Beck: Texas Tech University, Lubbock, TX; Breeden and Brosnan: University of Tennessee, Knoxville, TN
Title:Postemergence control of large and smooth crabgrass with SP25052
Section:Posters
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Meeting Info.:Charleston, South Carolina: January 23-25, 2012
Source:2012 Proceedings, Southern Weed Science Society. Vol. 65, 2012, p. 26.
# of Pages:1
Publishing Information:Champaign, Illinois: Southern Weed Science Society
Keywords:TIC Keywords: Comparisons; Crabgrass control; Digitaria ischaemum; Digitaria sanguinalis; Herbicide evaluation; Postemergence weed control
Trade Names:SP25052
Abstract/Contents:"Field trials were conducted at Texas Tech University in Lubbock, TX and the University of Tennessee in Knoxville, TN for the control of large crabgrass and smooth crabgrass, respectively, with SP25052. Studies were conducted on mature crabgrass infestations present in common bermudagrass roughs cut to a height of 3.8 cm. Plots measured 1.5 x 1.5 m and were arranged in a randomized complete block design with four replications. Treatments were applied using a CO2 backpack sprayer equipped with XR8002 or XR8004 nozzle tips and calibrated to deliver 281 L ha-1 at 124 kPa and 375 L ha-1 at 221 kPa, respectively. Treatments were initiated on June 6, 2011 in TN and consisted of SP25052 (127 g ai ha-1) + MSO (0.5% v/v) + AMS (2% w/v). Treatments were initiated on June 14, 2011 in TX and consisted of SP25052 (127 g ai ha-1), SP25052 (127 g ai ha-1) + MSO (0.5% v/v), SP25052 (127 g ai ha-1) + MSO (0.5% v/v) + AMS (2% w/v), SP25052 (127 g ai ha-1) + NIS (0.5% v/v) + AMS (2% w/v), and quinclorac (841 g ai ha-1) + MSO (0.58% v/v). An untreated control was added for comparison. Sequential applications of all treatments were made four weeks after initial treatment (WAIT). Visual estimates of percent large and smooth crabgrass control and bermudagrass phytotoxicity were recorded 1, 2, 4, 5, 6, 8, and 12 WAIT. Data were subjected to analysis of variance (ANOVA) and means were separated using Fisher's Protected LSD at the 0.05 significance level. In TX, bermudagrass phytotoxicity was greatest (4 to 6%) 1 WAIT of SP25052 + MSO + AMS and SP25052 + NIS. Bermudagrass phytotoxicity was greatest (5 to 11%) 1 week after sequential applications of SP25052 + MSO + AMS, SP25052 + NIS, and quinclorac + MSO. Large crabgrass control was greatest 4 WAIT with quinclorac + MSO (93%). The greatest large crabgrass control 4 WAIT with SP25052 treatments was exhibited by SP25052 + MSO + AMS (44%) and SP25052 + MSO (35%). Similar control was exhibited by SP25052 + MSO + AMS (45%) on smooth crabgrass in TN 4 WAIT. Excellent large crabgrass control (95%) was still evident in TX with quinclorac + MSO 8 WAIT. The greatest large crabgrass control 8 WAIT with SP25052 treatments was exhibited by SP25052 + MSO + AMS (58%) and SP25052 + NIS + AMS (47%). Smooth crabgrass control increased to 83% in response to SP25052 + MSO + AMS 8 WAIT in TN. Long-term large crabgrass control (12 WAIT) was greatest with quinclorac + MSO (96%). The greatest long-term control (12 WAIT) for SP25052 treatments was exhibited by SP25052 + MSO + AMS (44%). All other SP25052 treatments exhibited 13 to 19% large crabgrass control 12 WAIT. No SP25052 treatments exhibited long-term large crabgrass control similar to quinclorac + MSO. However, SP25052 + MSO + AMS treatments in TN maintained higher levels of smooth crabgrass control (73%) 12 WAIT."
Language:English
References:0
Note:This item is an abstract only!
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Henry, G. M., T. Cooper, C. Straw, L. L. Beck, G. Breeden, and J. Brosnan. 2012. Postemergence control of large and smooth crabgrass with SP25052. South. Weed Sci. Soc. Proc. 65:p. 26.
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http://www.swss.ws/wp-content/uploads/docs/2012 Proceedings-SWSS.pdf#page=98
    Last checked: 08/07/2013
    Requires: PDF Reader
    Notes: Item is within a single large file
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