Page:Tree Crops; A Permanent Agriculture (1929).pdf/77

 In Tunis I have seen them in arid locations where the rainfall was about ten inches.

Unfortunately the carob is injured by winter temperatures of 20° F, or even a little above. This limits the crop to approximately those lands where the temperature is suitable for the orange. However, as the orange is a water-lover, it requires good irrigable land, while the carob is a drought-resister, and it therefore occupics the rocky land above. The climatic relationship of the carob and the orange is well illustrated in the Valencia district of Spain, which contains four-fifths of the Spanish orange acres and two-fifths of Spanish carob acres.

Nearly everywhere in the Mediterranean countries the carob is a supply crop. It is like corn on the American farm, something to be fed to the farm animals. A few localities export it. A few thousand tons are exported from Algeria, but it reaches its greatest commercial importance in Cyprus, where