The agricultural income of peasant cultivators is mainly derived from two sources, from the land and from cattle. Other agricultural income, such as is raised by the sale of fruit, vegetables, eggs and milk, is very low. As far as land and cattle are concerned, master farmers have more of both than other peasant cultivators. Moreover, master farmers have a larger and more efficient labour force than their neighbours, and for these reasons their agricultural output is greater. With more crops than they need to feed their families, master farmers can sell a significant portion of their harvests and so earn money which can either be re-invested in agriculture or used for other purposes.