To help the 660 attendees at the mid-January National No-Tillage Conference in St. Louis make critical decisions on controlling weeds and insects in no-tilled corn for 1999, technical representatives from American Cyanamid, Zeneca Ag Products and Monsanto outlined new compounds and label changes.

Along with No-Till Farmer and IMC-Agrico, these firms co-sponsored this seventh annual conference.

American Cyanamid.

“We are very exciting about Lightning as it has done an excellent weed control job in no-till,” says Dennis Belcher, a technical service representative with American Cyanamid from Columbia, Mo.

“While there are no crop or weed height restrictions and we can apply this post-emergence herbicide on up to 20-inch tall corn, we’d like to see growers target the herbicide application according to weed height and not corn height. If you apply it to taller corn, consider using drop nozzles.”

Both a grass and a broadleaf herbicide, Lightning offers residual as well as contact activity. “You spray it on the soil and target 3- to 6-inch tall weeds,” says Belcher. “You can spray early because it gives you residual control throughout the season.”

About 30 herbicides can be tankmixed with Lightning. Tough weeds—such as fall panicum, shattercane, wooly cup grass, wild prosso millet, cocklebur, velvetweed, nightshade, sunflower, morningglories,—can be readily controlled.

Zeneca Ag Products.

A few “face lift” label changes have been made with Touchdown and Gramoxone Extra, says Susan Curvey, a product service lead with Zeneca Ag Products in Champaign, Ill.

A member of the same chemical family as glyphosate, Touchdown…