Here are some before and after photos of wheat and corn stubble and
straw residue control using a Martens harrow.
This was standing wheat that was never harvested in the 2007 season. The
weeds had been sprayed several weeks before. It was harrowed
mid-August on a 100 degree day with a Martens flex harrow.
Before

After
This was harvested wheat stubble. It
was harrowed mid-August on a 95
degree day with a 16 bar harrow.
Before

After
Before
This is corn stubble. It was lightly disced pulling a harrow behind the disc. It
was late October 2008 on a 70 degree day with a Martens flex harrow. The
harrow did the best job after the dew had lifted and the stalks dried a bit.

After

After