* Along rivers, the cash basis for corn also was strong while soybean bids were flat.
* Bids for both commodities were unchanged at interior elevators.
* Corn bids were unchanged at ethanol plants.
* Farmers were booking some light sales of old-crop corn, a dealer in northern Ohio said.
* Cash prices in that area were approaching $5 per bushel.
* But the recent futures market strength and appreciation in basis levels has made other many other farmers bullish about prices going forward and shut off country movement.
* A dealer in Council Bluffs, Iowa, said that farmers were calling in to lift agreements they had made to sell when prices hit certain levels.
* Concerns about harvest size also has made farmers wary of booking contracts despite strong cash prices.