Farmers hard to convince about herbicide weed resistance
Iowa farmers are not much different than those of northern Indiana in not recognizing the early warnings of a major weed disaster. He estimates that only about 20 percent of Iowa farmers are concerned enough about glyphosate weed resistance to change their weed control strategy next year or 2013, but it needs to be much higher.
Taking a group of ag retailers and farmers to a Respect the Rotation plot tour in east central Missouri really made an impression on Iowa attendees, waking them up to weed resistance being a bigger issue than they thought, Jackson said.
The goal is to break the continuous glyphosate use cycle so that the technology can be maintained for use where it is really needed and might even be useable every other year, especially in tank mixes. Using multiple modes of action herbicides in any one growing season; using a full rate of a pre-emergence herbicide when planting corn or soybeans; treating weeds post-emerge when they are small and won’t regrow to set seed heads; using alternative seed traits such as LibertyLink, which allows post-emergence spraying of Ignite herbicide; and even manual weed control and cultivating are basic concepts promoted in Respect the Rotation, explained Jackson.
For more information, Jackson can be contacted by e-mail at email@example.com.