Late-emerging volunteer wheat
Finally, newly emerged volunteer will be an ideal landing site for early waves of greenbugs and bird cherry oat aphids blowing in during September from southern areas. If these aphids find fields of volunteer wheat to land on, they will likely become established and multiply. They can then move on to infest planted wheat after it emerges in October. Greenbugs and bird cherry oat aphids can be vectors of barley yellow dwarf virus – an increasing problem in much of Kansas. By controlling any new stands of volunteer now, producers can help prevent these insect pests from becoming established in the immediate areas of those fields of volunteer. This will not guarantee that planted wheat will not become infected with barley yellow dwarf from aphids coming in from other locations, or at other times of the year, but it will help.