Full TGIF Record # 121269
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Web URL(s):http://gsrpdf.lib.msu.edu/ticpdf.py?file=/1940s/1940/400260.pdf#page=3
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Publication Type:
Content Type:Q & A
Corporate Author(s):USGA Green Section
Title:Use of mercurials in the control of turf diseases
Source:Turf Culture [II]. Vol. 2, No. 1, February 1940, p. 62.
# of Pages:1
Publishing Information:Washington, DC: United States Golf Association, Green Section
Question:In connection with the use of bichloride of mercury and calomel for combating dollarspot and brownpatch, we would like to inquire whether it is possible ot use mercury without discoloration of the grass. We would like to have your advice also as to the amount of water to be used with the powdered mercury and calomel and whether or not these chemicals deteriorate when mixed with water and allowed to stand in open glass jars before using the material.
Source of Question:Michigan
Keywords:TIC Keywords: Bichloride of mercury + calomel; Discoloration; Disease control; Dollar spot; Fungicide recommendations
Answer/Response:It is possible to use these mercury compounds on turf without any discoloration. In hot humid weather, however, there is more apt to be injury than in cooler or dryer weather. Therefore, it is necessary to use much lower rates on such occasions. Ordinarily we recommend the application of 3 ounces of these materials alone or in combination, to 1,000 square feet. In especially hot humid weather, however, we advise that the rates be cut to 1 ounce and in some cases even to one-half ounce to 1,000 square feet. These chemicals do not deteriorate when standing in water. It is well to water the grass lightly after an application of mercury compounds. If you are applying them by the spray method the amount of water required will vary somewhat with the type of spray equipment you are usingā€“the size of the nozzles, etc. Ordinarily 10 or 15 gallons to 5,000 square feet will be sufficient to give a good coverage.
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
USGA Green Section. 1940. Use of mercurials in the control of turf diseases. Turf Culture [II]. 2(1):p. 62.
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    Last checked: 01/24/2017
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MSU catalog number: SB 433.25 .C66
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