Full TGIF Record # 43400
Item 1 of 1
Publication Type:
i
Refereed
Author(s):Johnson, B. Jack
Author Affiliation:Prof., Crop and Soil Sciences, University of Georgia, Georgia Agricultural Experiment Station, Griffin, GA 30223-1797
Title:Sequential applications of preemergence and postemergence herbicides for large crabgrass (Digitaria sanguinalis) control in tall fescue (Festuca arundinacea) turf
Section:Research
Other records with the "Research" Section
Source:Weed Technology. Vol. 11, No. 4, October-December 1997, p. 693-697.
Publishing Information:Champaign, IL: Weed Science Society of America.
# of Pages:5
Keywords:TIC Keywords: Preemergence herbicides; Postemergence herbicides; Digitaria sanguinalis; Crabgrass control; Festuca arundinacea; Herbicide evaluation; Application rates
Abstract/Contents:"Preemergence (PRE) and postemergence (POST) herbicides were sequentially applied to tall fescue over a 2-yr period to determine the lowest herbicide rates needed for acceptable large crabgrass control. Prodiamine was the only PRE herbicide that provided full-season large crabgrass control in tall fescue turf. The control was 85% in plots treated at one-third recommended rate (0.3 kg/ha) and 96% at the full rate (0.8 kg/ha). Sequential applications of oxadiazon at one-third recommended rate (1.1 kg/ha) in late February followed by fenoxaprop (0.2 kg/ha) in June controlled 85% large crabgrass in late August. Control was similar in mid-August when pendimethalin, dithiopyr, or oryzalin at one-third recommended rates was followed by fenoxaprop, but was not acceptable (≤74%) by late August. In most instances, large crabgrass control was higher when fenoxaprop followed the PRE herbicide application than with MSMA. Reduced herbicide rates may not provide full-season large crabgrass control in other areas with different soil and weather conditions. Tall fescue quality was not affected by prodiamine, dithiopyr, and oxadiazon. In 1996, pendimethalin at 3.3 kg/ha reduced turf quality 16% and oryzalin at 2.2 kg/ha reduced quality by 46%. In 1995, MSMA reduced the quality of tall fescue more (≤21%) than fenoxaprop (≤10%). When compared to the use of PRE and POST herbicides alone, sequential PRE plus POST herbicide programs did not affect turfgrass quality."
Language:English
References:15
Note:Tables
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Johnson, B. J. 1997. Sequential applications of preemergence and postemergence herbicides for large crabgrass (Digitaria sanguinalis) control in tall fescue (Festuca arundinacea) turf. Weed Technol. 11(4):p. 693-697.
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