Some terminologies

a) Minimum temperature: It is the min. temperature range below which no crop growth occurs. For typical cool season crop, it ranges between 0 to 6°C whereas for hot season crop it range between 15 to 18°C.

b) Maximum temperature: It is the max. temperature range above which plants stop growth. For cool season crops, it ranges between 31 to 37°C & for that of the hot season crops it ranges between 44 to 50°C.

c) Optimum temperature: It is the temperature at which the most favorable condition (temperature) occurs for plant growth. For cool season crops it ranges between 15 to 31°C and for hot season crop it ranges from 31 to 37°c.