Sorghum is one of the five important cereal crops of the world and is used by millions in the semi-arid tropics and also as animal feed in many developed countries. The sorghum grain has excellent yields in the semi-arid tropics under several biotic and abiotic constraints. A good knowledge of sorghum plants and their mechanisms of adaptation in harsh environments will help in the formulation of efficient breeding programmes. This text should serve as a guide to students, extension workers and also researchers in sorghum crop productivity. The author has attempted to use sorghum crop as a basis for synthesis of the growth and development of other cereal crops. The work done on this crop could be used as a guide for the study of other cereal crops.