Deficiency is common in high rain fall areas, high temperature, soil acidity and calcareous soils.  Fruits become brown in colour.  Flesh may become soft and watery which cracks down to the centre.

Application of 5-10 kg Borax / ha a foliar spray of 0.25% Borax at 10 days interval or solubor at 300 gm/ 100litres of water.