As can be seen from the adjacent chart, MCX mentha oil was trading in a medium-term downward sloping channel. Recently it crossed the upper end of the channel and retested it. Along with the channel line key daily moving averages acted as crucial supports for the agri commodity. At these supports the oil formed a bullish outside bar on the daily chart. As a follow through mentha oil has started a fresh move on the upside. It is forming higher tops higher bottoms on the daily chart, which is a bullish sign. The daily momentum indicator is in line with the price action. The key level on the upside will be Rs.746. On the other hand, Rs.708 and Rs703 will act as a key support zone.