Farm water dugouts : a manual on the use of lime to provide good water quality / prepared by E.E. Prepas [and three others]. : En13-5/90-16E-PDF

"Dense algal blooms in farm dugouts cause taste and odour problems, clog filters, and at times kill livestock. The common copper sulfate treatment must be applied frequently, it leaves a residual taste, and it can be toxic to sheep. Lime treatment has been shown by earlier studies by the National Water Research Institute and the University of Alberta to effectively improve water quality. The application of calcium hydroxide to dugouts precipitated more than 99% of the algal biomass and the dugouts remained clear for two years. Farmers reported that the taste and odour of the water was greatly improved after the calcium hydroxide treatments and the effect continued into the next year"--Management Perspective.

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publications.gc.ca/pub?id=9.874034&sl=1

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