Abstract:

Liming has long been a common practice in the management of aquaculture ponds. This practice aims at sanitising the pond bottom between crops and improving the pond’s buffering capacity for water quality stabilisation. Liming can also improve bottom soil pH and enrich pond water with calcium and magnesium. Methods for estimating a pond’s lime requirement (LR) are of crucial importance because they provide pond managers with appropriate lime rates to maintain or improve the buffering capacity of aquaculture ponds. Regardless of the recent, rapid development of the aquaculture sector, LR methods for ponds have not yet been well-developed. Qualitative methods (e.g. using a single or multiple parameters of water and soil properties) have still been used in rural areas where access to laboratories is difficult. Quantitative methods (e.g. buffer methods) have not yet been widely used due to their inherent restrictions. Each of the LR methods can be used under specific targets for liming or pond conditions. The titration-based K-bicarbonate method has yielded the highest pond LR and seems superior to the other methods regarding accuracy, simplicity, cost, and environmental safety. It is a promising method for use in aquaculture ponds globally and deserves further investigation.

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Date 2025/12/31

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