| Moreover, in rate of growth of oysters, the present cultch is superior to the rate on natural oyster shells. |
| That is why it is important to return old shell to the oyster beds to provide cultch for future oysters. |
| The process of becoming cemented to the cultch is termed setting or spatting, and the young oyster after setting is called seed or spat. |
| Oyster larvae will attach themselves to many types of cultch, but seem to prefer mollusc shells and materials which contain chalky substances. |
| Really, when you're managing oyster resources, there are two words: 'plant cultch,' he said. |
| The mesh bags are an easy way to move cultch to the right place and time for larval settlement. |
