These are the opportunity costs of family labour (money which the farmer could have earned otherwise by engaging in for example casual (ganyu) labour, small business instead of farming
Uwu ndi mwayi wogwiritsa ntchito antchito apabanja monga ndalama zomwe mlimi akanapeza akanagwira ganyu kumunda, kugulitsa zinthu zing'onizing'ono mmalo molima