INSECT, PLANT DISEASE, & WEED SCIENCE NEWS [No. 89-11] [June 6, 1989]

In This Issue: Postemergence Weed Control in Soybeans Do Not Use Pursuit on Corn Weed Tour Reminder Postemergence Weed Control in Soybeans Weeds in soybeans planted during the last ten days of May are reaching the stage when they should be controlled. Weeds between the rows can be controlled with a cultivator but weeds within the row are best controlled with herbicides. Success with postemergence herbicides hinges on timing of the application. Do Not Use Pursuit on Corn We are aware that some growers are considering using Pursuit postemergence for shattercane control 1n corn. Pursuit is registered for use in soybeans but is not approved for use in corn. The use of Pursuit in corn would result in illegal pesticide residues in the corn and subject the crop to condemnation. Grain not only from the treated crop but all grain stored with it would be subject to condemnation. The applicator would be subject to penalties for violating the pesticide label. Research conducted by Dr. Fred Roeth shows that treating corn with Pursuit postemergence results in a yield reduction of 30-50% even if no weeds are present. We and American Cyanamid strongly discourage the use of Pursuit or any other pesticide in a manner other than specified on the label. Weed Tour Reminder The Nebraska Weed Tour is scheduled for June 20 at Scottsbluff and North Platte. The tour continues at Clay Center and Lincoln on June 21 and concludes at Concord on June 22. Details on the itinerary were listed in our May 9th Newsletter