I don't know jack about the Grains. In fact I hate them with a passion as there are too many variables including international politics & weather related b.s. with them to even chart logically as far as I'm concerned. And the 'news' isn't the fundamentals as it's just what smart money tells the media what they want everyone else to believe. But here is a link to the seasonal trends of the Grains. Note with the exception of Wheat the trend is up in the 1st 1/2 of the year historically. Doesn't guarantee price will track each and every year but just like spring brings warm weather and more outside activity the fundamentals in most grains also bring higher prices 'as a rule' of thumb. This link is interactive so you can click on any of the Grains for a seasonal trend chart.

Wayne often puts up a chart of Beans so he'd be the one to ask about a decent chart of them and comments. In fact you could likely click 'search' and Wayne and you'd see all his posts. Likely find a lot of Grain charts there recently.