Here are some pictures before and after planting corn into soybean stubble. The corn was planted may 18th using a 12 row Kinze with row cleaners set in the float position.  Keep in mind that this long term no-till on well drained soil.
 I kept track of the soil temperatures at the 2 inch depth in the cleared seed row plus under the undisturbed residue. Using the high and low temperatures then calculating the corn gdd`s i figured if the corn was planted in residue covered soil it would have emerged 2 days later than the corn planted in the cleared row.

(larkins se 4 12 2011 003.jpg)

(larkins se soybean stubble 5 22 2011 001.jpg)

(larkins se corn 6 2 2011 004.jpg)

(larkins se corn 6 2 2011 003.jpg)

(larkins se Bt corn 6 12 2011 002.jpg)

larkins se 4 12 2011 003.jpg (90KB - 38 downloads)

larkins se soybean stubble 5 22 2011 001.jpg (118KB - 38 downloads)

larkins se corn 6 2 2011 004.jpg (84KB - 36 downloads)

larkins se corn 6 2 2011 003.jpg (58KB - 39 downloads)

larkins se Bt corn 6 12 2011 002.jpg (66KB - 39 downloads)