by U.S. Dept. of the Interior, Bureau of Reclamation : for sale by the Supt. of Docs., U.S. Govt. Print. Off. in Washington .
Written in English
|Statement||by T. R. Bartley|
|Series||Research report - Bureau of Reclamation ; no. 27|
|Contributions||United States. Bureau of Reclamation|
|The Physical Object|
|Pagination||vii, 24 p. :|
|Number of Pages||24|
Copper Sulfate Crystal. After the rice field has been flooded to a depth of 6 to 8 inches, the Copper Sulfate Crystal should be uniformly applied at a rate of 10 to 15 pounds per acre at the first sign of infestation. Following these directions carefully should keep the concentration of copper sulfate File Size: 41KB. Book: 4th British Weed Control Conference pp.6 pp. 1 Abstract: Species susceptible and resistant to p.p.m. of copper sulfate copper sulfate Subject Category: Chemicals and Cited by: 2. Is 99% copper sulfate pentahydrate (% copper as metallic), a compound used for years as an algaecide. Effective against all forms of algae including: filamentous, planktonic, and branched algae. Crystal form is most effective on bottom mats while the fine . The amount of elemental copper applied to U.S. water bodies for aquatic weed and algae control is estimated at - metric tons (9 - 11 million pounds) as copper sulfate pentahydrate and metric tons (, pounds) as chelated copper varieties .
87 are applied each year solely for algae and weed control (RED-Cu, ). 88 In addition, Copper sulfate is listed on the National List of allowed synthetic substances for use in organic 89 livestock production (§ ) as a topical treatment, external parasiticide or local anesthetic. Copper. Copper is fantastic for algae but does very little for 95% of any variety of pond weed. On certain occasions we may recommend mixing copper with an aquatic herbicide to kill a weed like Eurasion watermilfoil, but for the most part copper is for algae control in ponds not weed control. Equipment: Used in this experiment was a dixie cup, Copper (II) sulfate, water, and a weed growing in an lightly travelled obscure area. Procedure: The first step is to mix a good amount of the Copper (II) sulfate in with a full cup of water. Pour at the base of the weed and observe changes over time. Copper sulfate is most efficient in water temperatures of 60°F or higher. However, we use discretion with this control method because high concentrations are toxic to fish and food organisms. Got fish? If there are fish in the pond and the algae and aquatic plants cover a pond suddenly, copper treatment is .
for copper is based on the taste of the water, not on protection of human health. The standard is µg/L, compared to 1 µg/L for mercury, 5 µg/L for cadmium, 10 µg/L for lead and 50 µg/L for chromium (Wright and Welbourn, ). Nevertheless, the high toxicity of copper to aquatic organisms and ecosystems warrants. Copper sulfate is water soluble, and dissolves fairly easily when mixed with water. Several companies market copper in liquid and crystal forms. Before you use any form of copper treatment, you need to measure the total alkalinity of your water (NOT HARDNESS OR pH), since the toxicity of copper to fish increases as the total alkalinity decreases. Copper sulfate specifically known as Copper sulfate pentahydrate is one of the most common and largely used chemicals for control of algal growth in aquatic system all over the world. Identifying and Managing Aquatic Vegetation Purdue extension APMW Purdue extension Preventive Control 11 Mechanical Control 11 Aquatic weed growth can provide the quiet water environ-ment that is ideal for mosquito larvae development.