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Primary Examiner: Hollrah, Glennon H.
Assistant Examiner:
Attorney: Curtis, Morris & Safford

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Title: Method for controlling the growth of aquatic plants

Abstract: The growth of aquatic plants, and particularly undesirable aquatic plants such as weeds and algae, is controlled by adding a dye to the water in the vicinity of the undesired plant growth. The dye is of a color such that it absorbs a substantial portion of the light at wavelengths normally used by the plants in photosynthesis, so that growth of the plants is stopped or arrested. The color of the dye preferably ranges from blue to green, and preferably is predominantly blue so that the water has a pleasing appearance to the eye. Preferably, the dye is applied prior to germination of the plants and at such further times as necessary.

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Inventors: Wilson, Charles G. (Milwaukee, WI, US)

Application Number: 217952
Filing Date: 1972-01-14
Publication_date: 1977-08-16
Assignee: Aquashade, Inc. (Dobbs Ferry, NY)
Primary Class(es): 504/160 534/784, 534/883
Other Classes:
US Patent Ref:
Other Refs: Other References: dolge Co., "New Dolge Lake & Pond Dye" (1970) Data Sheet, pp. 1-2, Sept. 1970.
Dolge - Fairway to Clubhouse, (1970), Golfdom - Jan. 1970.