Acid lime is the most important fruit crop grown extensively in tropical areas of India. Among different fungal post-harvest rots, Sour rot caused by Geotrichum candidum is the most serious one causing up to 24.3% losses in acid lime. Symptoms of the disease appeared initially as soft, watery and slightly discoloured spots on the surface of the fruit rind. During the survey of the post-harvest rots, the incidence of sour rot was recorded up to 24.3%. The extent of post-harvest damage was high at the retailer level (30.3%) and it was maximum in January harvested fruits. At the wholesale and consumer level, the extent of loss is up to 13.9 and 22.1 respectively.