Causes of Fruit Cracking in Litchi
There are many reasons for Litchi fruit cracking. The major reasons are as follows :
i. Prolonged drought or dry and hot winds
ii. Physiological reasons
iii. Lack of boron or calcium in the soil
iv. Attacks of insects or mites
Take the following management :
i. Apply an optimum dose of balanced fertilizers with organic and chemical fertilizers according to the age of the plant in 3 instalments per year, i.e. at the beginning of monsoon, at the end of monsoon and after the flowering.
ii. Litchi trees should be irrigated regularly every 10-15 days after fruit set in the dry season.
iii. If necessary then cover the base of the tree with water hyacinth or straw after irrigation.
iv. Calcium fertilizer (Dolochun – 50 gm) should be applied at the base of the plant every year.
v. During fruit growth, zinc sulphate should be mixed in 10 gm/liter of water and sprayed on the plant every 21 days.
vi. Planofix or Miraculan should be sprayed at the rate of 2 ml per 4.5 liters of water immediately after fruit set.
vii. Boric acid or Solubor boron mixed in 2 gm/liter of water should be sprayed on the plant 3 times at intervals of 10-12 days.
viii. Monitor the tree carefully and take necessary control measures if found any attacks of insects or mites.