Definition of crop and Plant  physiology

• Crop physiology refers to the “Science of how plants develop, grow, and respond to their environment at the cellular & biochemical level”.
• Plant physiology is the study of:

a) the functions and processes occurring in plants

b) the vital processes occurring in plants

c) how plants work

• In essence, plant physiology is a study of the plant’s way of life, which includes various aspects of the plant’s lifestyle and survival including metabolism, water relations, mineral nutrition, development, movement, irritability (response to the environment), organization, growth, and transport processes.
• Plant physiology is a subdiscipline of botany concerned with the functioning, or physiology, of plants.
• Julius von Sachs (October 2, 1832 – May 29, 1897) is considered the father of Plant Physiology.