How flowering and fruiting occurs in Plum crop?

Flowering in plum cultivars usually take place in the second half of February in the north India plains. Plum flower profusely hence there are sufficient number of hermaphrodite flowers to set fruit. Usually there is very heavy fruit set in plums. However, it is cultivar dependent. For example, Kala Amritsar is heavy bearer but Alu Bokhara is shy bearer.

Plum follows a double sigmoid curve of fruit growth. Immature fruits are very acidic. As the fruit mature the acidity start decreasing and TSS goes on increasing. Simultaneously the skin colour specific of cultivar start developing.