Major Manufacturing Centres in India:
In India, in around 1943-44, Sago production was started first in Salem (Tamilnadu) on a cottage scale basis by crushing & pulping the tapioca roots, filtering the milk-extract and after settling the milk, forming globules and roasting these globules. Till that time, cassava was used for direct food as cooked tubers. After 1945 only industry developed its indigenous machineries locally and start marketing its products all over India. Before that period, Sago was an imported item in India and consumption was in very limited quantity (only for sick persons or for infants as were prescribed by Doctors).
Currently, in Tamilnadu alone, cassava is being cultivated over an area of about 82000 hectares providing employment for thousands of workers over fields and in 800 processing units. In Salem District alone, 34000 hectares of land is under cassava cultivation and there are 650 units engaged in tapioca processing.
There is volatility in yearly production of Tapioca Sago-Starch in the region. In 2001-02 At The Sagoserve, there was Total Turnover of Sago-Starch of 24.41 lakh bags valued Rs. 20470.37 lakh, where as in 2012-13 the total Turnover of Sago-Starch was of only 12.92 lakh bags for total value of Rs. 35448.04.
(source: http://www.sagoserve.com/Growth.htm )
Samalkot (Andhra Pradesh):
In Andhra Pradesh, Sago manufacturing was started first in Samalkot, East Godavari region in 1966. Up to, 1980 sago manufacturers were completely dependant on Calcutta market, as till that time they brought their product for sale on commission basis through Calcutta Agents only. First Sago factory was started in 1949-50 and number of sago factories in the area went up to 53 in 80s. Gradually it has come down and currently in the year 2014, there are only 20 factories are running.After 1980, they started to follow Salem industry and started to sell their products in other states through agents.
Total Area (in Hectares) of Land under Cassava Cultivation was about 60000 acres in 2013-14 and about 70000 acres in current year i.e. 2014-15.
There is no any authentic data available for sago-starch manufactured in and marketed from Andhra Pradesh. Currently, in 2014, there are only 20 mills are running.