Date of this Version
Insect Science, Plant Disease, & Weed Science, University of Nebraska Cooperative Extension, Institute of Agriculture and Natural Resources 87(10) (May 22, 1987)
In This Issue:
- Postemergence Shattercane Control in Corn
- Leafy Spurge Reminder
- Weed Control on CRP Acres
- Has Your Herbicide Failed?
- Postemergence Weed Control in Onions
Postemergence Shattercane Control in Corn
Postemergence control of shattercane in corn is limited. Bladex 80W or 90DF used with vegetable oil or a surfactant can be used before corn exceeds the 4-leaf stage. The Bladex label does not claim shattercane control. Our observations are this treatment stunts small shattercane plants but may not kill them. Similar results may be obtained with 2 qt/A atrazine used with crop oil concentrate. While these treatments don't kill the shattercane they set it back allowing the corn to get ahead of the cane. This sets the stage for effective control with cultivation.
Leafy Spurge Reminder
Leafy spurge is very obvious now in grazing land and along roadsides. The plant is easily seen as the tops of the plants are bright yellow. Small patches should be treated before they spread. The ideal time to treat leafy spurge is from mid-May to early June.