@Sohail khan
See, optimum temperature required for C3 plants are 18-24 degree C and for C4 plants 32 – 55 degree C. but C3 plants starts to grow when the soil temp reach upto 4-7 degree C and C4 plants starts to grow when the soil temp. reach upto 16-21 degree C.
Posted by
Priyanka Kumari