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Weed Resistance

As weed resistance continues to grow, it’s important to arm yourself with the latest in what weeds are resistant, new methods of control and what you can do to keep from having a resistance problem in your fields.
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Recent Items for Weed Resistance
  • waterhemp
    Jun. 18, 2013
    Article

    Screen Waterhemp for Herbicide Resistance

    The weed science program at the University of Illinois is offering free screenings for herbicide resistance in waterhemp to Illinois farmers during the 2013 growing season. Aaron Hager, associate professor of weed sciences at U of I, says with continued financial support from the Illinois Soybean Association, over 1,000 plant samples have been screened through the collaborative effort between the U of I and the ISA....More
  • Jun. 12, 2013
    Article

    5 Tips for Early-Season Post-Emergence Weed Control

    After starting the season with clean fields at planting, now is the time to focus on early-season weed control to maintain maximum yield potential. For corn, weeds can reduce yield as soon as the V2 stage or when corn is roughly 6-8 in. tall....More
  • marestail, horseweed
    Jun. 6, 2013
    Article

    Horseweed (Marestail) Control After Corn, Soybean Emergence

    Over the past several days, growers have increasingly been looking for options to control marestail after corn and soybean emergence, says University of Illinois Associate Professor of Weed Sciences Aaron Hager. “Many have reported poor marestail control from herbicides applied prior to planting (primarily no-till soybean), especially when these burndown applications contained only glyphosate or glyphosate and 2,4-D."...More
  • Jun. 5, 2013
    Article

    Soil Residual Herbicide Options After Soybean, Corn Emergence

    With very tight windows of opportunity to plant this year, pre-emergence herbicides may not have been applied as planned. Application of a residual herbicide prior to planting or emergence of the crop, in both corn and soybean, is a great weed management strategy overall and also a key tool in managing against herbicide resistance. What are some options if soybeans emerged before a pre-emergence herbicide application was made?...More
  • waterhemp growing in field.
    May 20, 2013
    Article

    Control Emerged Waterhemp Before Planting Soybeans

    The increasing prevalence of waterhemp plants and populations that demonstrate resistance to herbicides from more than one site-of-action family increases the importance of controlling any emerged waterhemp plants before planting....More
  • May 14, 2013
    Article

    6 Tips for Postemergence Application of Pre-Emergence Corn Herbicides

    One of the problems with a wet start to the season when planting gets compressed into short periods is the lack of time to apply preemergence herbicides and 28% before corn emerges. Most pre-emergence corn herbicides can be applied to emerged corn, and some of them have enough foliar activity to control small, emerged weeds without the need to add postemergence (post) herbicides....More
  • May 2, 2013
    Article

    Control Weeds Before Planting Corn, Soybeans

    Wet soil conditions have caused delays in planting and in efforts to control existing weed vegetation. Much of the existing weed growth is comprised of winter annual species, such as common chickweed, henbit, purple deadnettle, etc., but emergence of several summer annual species also has begun....More
  • May 2, 2013
    Article

    Control Weeds Before Planting Corn, Soybeans

    Wet soil conditions have caused delays in planting and in efforts to control existing weed vegetation. Much of the existing weed growth is comprised of winter annual species, such as common chickweed, henbit, purple deadnettle, etc., but emergence of several summer annual species also has begun....More
More
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