Why is buffer stock created by the government?

Due to the following reasons, buffer stock is created by the government
(i) A buffer stock of food grains is created by the government, so that it can be distributed in food deficit areas and among the poorer strata of society at a price much lower than the market price.
(ii) A buffer stock also helps to resolve the problem1’ of food shortage during adverse weather conditions, a disaster or a calamity.
(iii) Maintaining buffer stock is a step taken by the government in order to ensure food security.