ABSTRACT
We have now reached the point in our investigation of output per man-hour under different systems of land use where the problem of fodder supply for draught animals must be considered.
Rural communities subsisting by the long-fallow cultivation systems have no draught animals and the supply of animal food for human consumption usually comes from hunting and fishing or from smaller domestic animals and fowl, which find their feed mainly in forest or bush. The upper limit to the area under cultivation at one and the same time is here given by the need of fallowing for the sake of maintaining crop yields, rather than by the need to provide feed for domestic animals. With the transition to a system of short fallow in which draught animals are used a new situation is created. The limit to the area which can be cultivated in a given year is now determined by the necessity of setting aside large areas for grazing by draught animals which feed mainly or exclusively on natural vegetation.
