SOME COMMENTS ON THE NECESSITY of keeping proper farm records have been made in several places in this manual. Without such records you cannot be sure whether your management is successful or not. In addition, you cannot forecast what future resource requirements or income may be, or estimate what the effect of changes in management or market opportunities could be.
The details of economics and business management are beyond the scope of this manual. However, information on this topic, in relation to freshwater prawn culture, can be found in Rhodes (2000). In addition, an FAO manual on simple economics and farm bookkeeping is available (FAO 1992a).