Fund buying is signaling it is the market bottom for grains, because they say so. And beef has hit a market top because President Trump says it has. Of course, it is more complex than that but those are authoritative sources.  The corn market did not wait for such signals, instead rallying of late on fundamental supply and demand. Soybeans still have the hope that Mr. Trump does a deal with China that results in large buys to fill late year demands. Wheat has hit such bottoms that there seems no other direction to go but up. Meanwhile, beef prices have risen to such thin air that any whim or fancy can cause turbulence.  Still, in a fall harvest period that has been bearish for row crops, this week finally found at least some suppo...