liming of pond is necessary in fish culture
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The acidity of pond soils can be neutralized and the productivity of the pond improved by liming. “Liming” refers to the application of various acid-neutralizing compounds of calcium, or calcium and magnesium. Liming ponds has three important benefits. Liming may enhance the effect of fertilization.
The lime requirement of ponds is defined as the amount of liming material needed: to neutralize the acidity of the pond bottom soil; and. to increase the total alkalinity of the water above at least 25 mg/l CaC03.
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