Process of curing in cut surface of potato

➢ Deposition of suberin in cut surface

➢ Cell below the itagawa layer becomes meristematic and give rise to protective

layer of cell i.e. periderm

➢ Dense network of periderm is called phellem

➢ Cultural practices of curing

➢ bending of neck of onion

➢ Dehaulming of potato

➢ Check irrigation before harvesting

Factor affecting curing

a) Temperature:

❖slightly higher than growing temp

❖For hilly areas root crops: 15-25°C

❖For plain areas root crops: 26-34°C

b) Relative Humidity:

❖Favorable RH: 80-95%

❖High temperature and high RH favors curing

c) Gases:

❖Wound healing doesn’t occurs if CO2 is higher than 10% and oxygen is less than

5%