Full TGIF Record # 120396
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Publication Type:
i
Professional
Content Type:Q & A
Corporate Author(s):USGA Green Section
Title:Arsenic acid in weed control
Section:Our letter box
Other records with the "Our letter box" Section
Source:Turf Culture [II]. Vol. 1, No. 1, January 1939, p. 92.
# of Pages:1
Publishing Information:Washington, DC: United States Golf Association, Green Section
Question:We have been applying arsenic acid (75 per cent) with the power sprayer at the rate of ½ pint in 50 gallons of water to cover 1,000 square feet of turf to control chickweed. It has burned the clover out and injured dandelions and broadleaf plantain. There has been considerable burning of the turf however. Has our rate of application been too heavy?
Source of Question:Massachusetts
Keywords:TIC Keywords: Application rates; Arsenic acid; Herbicide recommendations; Weed control
Answer/Response:Arsenic acid is a heavy liquied therefore 1 pint of it weighs almost 2 pounds. You can roughly figure it on a 2-pound basis. Therefore, you were applying the material at the rate of 1 pound to 1,000 square feet. This is a very heavy application as a spray and would be expected to cause some injury to the grass. It has been our experience that the best results are obtained when arsenic acid is applied in the form of a spray at the rate of ¼ to ½ pound to 1,000 square feet. The ¼-pound rate is usually ample to give fairly good control and does not cause a great deal of damage to grass. In the case of the bent grasses, the rates have been reduced to 1 or 2 ounces to 1,000 square feet. However, when these light rates are used, it is necessary to repeat the treatment at least two or three times to get a reasonably good control of the weeds. Even though you have considerable burning of the grass, you no doubt will find that most of it will recover. The amount of water which you used is much more than we ordinarily find necessary for complete coverage.
Language:English
References:0
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
USGA Green Section. 1939. Arsenic acid in weed control. Turf Culture [II]. 1(1):p. 92.
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http://gsrpdf.lib.msu.edu/ticpdf.py?file=/1930s/1939/390190.pdf#page=3
    Last checked: 01/24/2017
    Requires: PDF Reader
    Notes: Item is within a single large file
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MSU catalog number: SB 433.25 .C66
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