Blossom end rot in tomato

Blossom end rot in tomato is caused by the deficiency of calcium.Symptom: The end of the fruits rot. It can also be caused due to over watering.: .. Treatment for blossom end rot : apply Lime at the rate 2 kg per cent land area ( 4x10 sq meter) and also spray calcium nitrate at the rate of 5 grams dissolved in 1 liter of water on the leaves. .