The price of corn has declined by more than 20% over the past month. Quotes closed the gap that was formed back in February at the level of 623 - 624. The RSI has entered the extreme oversold zone (below 10), so at least a small rebound is urgently needed.
Before falling to the current local lows, the price was kept by the support range of 655 - 660. The "bulls" are able to use this range as a target for a rebound upwards.