Unfortunately, my idea didn't play out as I expected. The price didn't go all the way down: Only to 441 (29th of March) and not all the way down to roughly 425/430.
The price is about to follow the second move, back up to the upper triangly line (resistance). The reasons are try weather conditions in the area of Kansas (from parts of Nebraska to the North of Texas and parts of Oklahoma) and bad crop conditions / progress.
But at the moment the 478 resistance is still in play.