1. Blossom end rot:
it is more serious, ground discoloration starts. In blossom end of the fruit. Black spot develops to encompass ½ to 2/3 rd portion of the fruit. Later the tissues shrink and skin becomes dark grey to black. It may lead to secondary infection by fungus and unfit for consumption. Causes: use of Ammonium sulphate, imbalance of Mg & K; deficiency of calcium Remedies: cultural practices that concern soil moisture and maintain uniform moisture supply. Transplanting in early April instead of early June. Foliar spray of 0.5% CaCl2. Apply Nitrogen in the form of Urea.