Oklahoma State University has released its list of winter wheat varieties they’ve found to be potentially allelopathic—or might cause reduced stand establishment or yield in canola. They include:

• CJ

• Bullet

• Doans

• Doublestop CL+

• LCS Mint

• OK Bullet

• OK Rising

• Pete

• WB Grainfield

The wheat varieties tested in field that do not seem to have allelopathic effect include:

• Armour

• Centerfield

• Deliver

• Duster

• Endurance

• Ruby Lee

• WB Redhawk

OSU stresses research is ongoing into this topic and more wheat varieties will be tested in the future and this list will continue to be updated. Additionally, just because a wheat variety is on this list, doesn’t make it a “bad” variety or one that shouldn’t be grown, explained Josh Lofton, OSU cropping systems specialist. Rather, farmers should use this list to improve their selection decisions depending on their own cropping rotations and field needs.

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