Due to high inflation, SEBI have decided to ban on 7 Agri commodity. This move is aimed at stop speculation that take place in derivatives market, which might further drive up the prices.
However, there are studies done by RBI and SEBI which suggests that ban on Futures and Options trading segment has nothing to do with inflation, the ban seems to be much more of politically driven as the former government did back in 2008-2009, before the election.