Construction of fertilizing cribs in tilapia ponds in Malawi

Credit: Allan Katola (Malawi)

The photo shows the constructing a crib for manure in tilapia pond in Thyolo district Malawi. This system is commonly used in small scale fish farms where farmers rely on animal manure which have little nutritive content. In order to avoid the silting up the pond by the large quantities of animal manure, a crib is constructed and the manure is applied so that only the nutrients dissolve into the water keeping the undissolved bulk of  the manure within the crib.

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