Studies in Rainfall and Crops at Pretoria

Abstract

Only by long-term work is it possible to eliminate variable climatic effects and so to secure reliable data on such topics as those dealt with in the present article. Some of the studies begun in Pretoria in 1929 have been continued ever since and provide a basis for practical means of conserving water, plant nutrients and soil; they also serve to emphasize the agronomic importance of grass, both as sown pasture and natural veld.