The optimum temperature for the attack of foot rot of papaya (Pythium aphanidermatum) is

A. 32°C

B. 28°C

C. 22°C

D. 36°C

Answer: Option D

Solution(By Examveda Team)

The optimum temperature for the attack of foot rot of papaya (Pythium aphanidermatum) is 36°C.
Stem rot caused by Pythium aphanidermatum is commonly noticed in 2 to 3 year old trees. This fungal disease usually appears during the rainy season and its severity increases with the intensity of rainfall. Optimum temperature of 36°C is favourble for disease development.