Crop physiology is important to appreciate the structural economy or the efficiency of biological structures. The chloroplast and mitochondria are submicroscopic organelles, which bring about energy conversions so efficiently that man, made solar panels; hydroelectric and atomic power plants are far less efficient in terms of ratio of energy generated per unit space. Thus, Crop physiology offers an opportunity to view this intricate and finely interwoven fabric of interplay of functions- the gossamer of life.

Crop physiology has remained very fascinating on account of its extra and sometimes sole emphasis on understanding the basic principles like structure-function relationship, energy-function relationship, and physico-chemical explanations of functional manifestations and molecular basis of cellular regulation. It has always enriched the treasure of knowledge and elevated human minds with the joy of enlightenment. Hence, Crop physiology is the investigation of the plant processes driving growth, development, and economic production by crop plants.