Rationality is one of the basic underlying assumptions of economic behaviour of an individual, firm or industry. Economic theory rests on and takes as its starting point the assumption that each economic producer tries to maximize his individual gain, that profit motivation governs the behaviour of producers . This assumption is more true in explaining the behaviour of the non-agricultural sector of the economies than that of the agricultural sector. Contents: Introduction, Select Review of Literature and Methodology, Agricultural Economy, Regional Imbalances in Agricultural Growth, The Supply Behaviour of Food and Nonfood Crops, Regional Variations in Supply Behaviour of Major Crops, Summary of Findings.