Just remember the 20ema that I use all the time is on the DAILY chart. As soon as you switch to intraday the 20ema or any other moving average is 20 'bars' of whatever that time frame. It is NOT the Daily 20ema. I have watched the 20ema on the Daily chart and when it gives the signal being the larger time frame I go to the 60 minute chart and watch the support and resistance levels to trade off of and remove the moving averages as I don't need them then. I've been making several trades lately on the triple bear SPX ETF:SPXU and doing great. Lots of price action and support and resistance levels to trade off of.
So with the Corn watch how price now up against the 20ema acts and see if it clears and holds above it which would be bullish or rolls over and sells off. Critical point now. But like I said I would have bailed out on the close with price bumping up against the 20ema and would wait to see what price does.