1. Promoting Wheat Crop Rotation and Soil Conservation Bill Jones, M.S.

2.  Developed using traditional breeding from rapeseed ◦ Spring Systems  Introduced to Southern Great Plains ◦ Rotation crop in wheat  Improves physical soil characteristics, allows for broader use of herbicides on weeds, and offers diversified income.

3.  OK: +24% ◦ 2014  666,900 ha (270,000 ac) ◦ 2013  506,350 ha (205,000 ac)  US: +21% ◦ 2014  4,200,000 ha (1.7 M ac) ◦ 2013  3,300,000 ha (1.4 M ac)

4.  Adopted mostly by no-till producers ◦ Help eradicate weed pressure  Different herbicide chemistries  No-till results can be problematic ◦ 40%-80% reduction in stand in high residue systems  Result of crown freezing but highly variable

5.  How can we manipulate the wheat stubble to create growing conditions conducive to winter survival of canola?  Light, shallow cultivation ◦ Harrow ◦ Great Plains Vertical Till (VT)  0°, 3°, and 6° ◦ Landoll VT  Fixed at 10°  Prescribed fire ◦ Burn stubble prior to canola planting

7. Questions? Bill Jones 277 Ag Hall bill.jones@okstate.edu