Harvesting stage of walnut is

A. Turning stage

B. PTB Stage

C. Greeb bud stage

D. Bursting stage

Answer: Option B

Solution(By Examveda Team)

The harvesting stage of walnut is the PTB stage.
PTB here refers to packing tissue between and around the kernel halves just turning brown. And it is a phonological indicator of kernel ripening at harvest in walnuts. Higher mineral content, antioxidant, better fatty acid profile and antibacterial activity is observed in the PTB stage, hence it is considered good for harvesting.