Survey for the prevalence of post harvest stem-end rot and anthracnose diseases of mango caused by B. theobromae and C. gloeosporioides, respectively were conducted in the market storage depots known as arots at wholesaler and retailer category under 5 major mango growing and marketing districts of Bangladesh viz. Mymensingh, Dhaka, Rajshahi, Chapainawabganj and Dinajpur. In the year 2002, the inspection of fruits continued for 7 days beginning from their first display after unpacking the transported fruits carried from their production areas. An intensive survey was conducted at 14 arots of 2 spots (Nutan bazar and Shadeshi bazar) of Mymensingh town during May-August, 2002. Survey in Dhaka was conducted at 54 arots of 6 spots (Farm gate, Kawran bazar, New market, Mirpur, Santinagar and Badarntali) during June-August, 2002. In Rajshahi 28 arots of 6 spots viz. Shaheb bazar, Bagha, Charghat, lalpur, Ahmedpur and Banasshar bazar were surveyed during July-August, 2002. In Chapainawabgonj, 28 arots of 5 spots viz. Kanshat Shibgonj', Volarhat, Nawabgonj, Gomostapur and Rahmpur, were surveyed during July-August, 2002. In Dinajpur, 15 arots of 5 spots (Bahadur bazar, Dasli mile, Ranir bondar, Chirir bondar and Fulbari bazar) were surveyed dining May-August, 2002. In the study, 12 mango varieties viz. Fazli, Aswina, Langra, Himsagar, Chosa, Mohanbhog, koapahari, Lakkhanbhog, Gopalbliog, Goetee, Kisanbhog and Khirsapat, were inspected for the prevalence of stem-end rot and anthracnose diseases. In the arots, symptoms on all the varieties were studied under natural environmental conditions whereas development of diseases and symptom expression was observed under laboratory conditions in inoculated mango fruits. Baskets of fruits available in the market on the day of observation were checked for disease incidence and severity. In the market fruit baskets, on the basis of visual observation anthracnose and stem-end rot diseased fruits of mango were individually identified Diseased portion of an individual fruit was recorded from 10 randomly selected fruits considering the total portion of an individual fruit as 100% and the average value gave the percent disease severity. For the assessment of fruit loss, the disease incidence and severity was assessed on the varieties available in the markets as per cent fruit infected and surface area diseased. For pathogenecity test, matured and healthy mangoes of variety Fazli collected from Mymensingh arots were inoculated by placing mycelial blocks (6 mm diameter) of Botryodiplodia theobromae and Colletotrichum gloeosporioides from 7 days old culture. Observations were made for initiation of infection and disease development. After placing the mycelial block on the wounded place, the inoculated block was covered with sterilized water soaked cotton for conserving moisture. After 3 days of inoculation, the lesion size, length of diseased area (LDA), percent fruit infection, percent fruit area diseased (FAD) and percent fruit diseased index (PDI) were recorded to evaluate the varietal susceptibility to these 2 pathogens. For each variety 3 fruits were inoculated by C. gloeosporioides and 3 fruits were inoculated by B. theobromae. Data were collected upto 7 days after inoculation.