News Center
North America
Scientists confirm first case of waterhemp with six-way herbicide resistance

As if corn and soybean farmers didn’t have enough to worry about, there’s this: University of Missouri (MU) weed scientists have discovered a waterhemp population that resists six herbicide sites of action.

It all started when farmers in the north-central Missouri county of Randolph reported a population of waterhemp that appeared to resist 2,4-D. MU researchers then conducted field experiments that confirmed 2,4-D (herbicide site of action Group 4) resistance. But they also found the same waterhemp population resisted:

• Atrazine (Group 5)
• Chlorimuron (Group 2, Classic)
• Fomesafen (Group 14, Flexstar, Reflex)
• Glyphosate (Group 13, Roundup)
• Mesotrione (Group 27, Balance Flexx)

Of the eight herbicides applied, only dicamba (Group 4) and glufosinate (Liberty, Group 10) provided acceptable control, say the MU scientists.

The MU researchers say six-way resistant waterhemp requires a diversified management approach. Rather than relying on glyphosate, 2,4-D, or any other single herbicide, they recommend a variety of appropriate cultural, mechanical, and biological control tactics. For example, rouging weed escapes this summer and hauling them away from the field can help forestall future waterhemp infestations.

Prev: Dicamba injured crops and plants becoming more evident in US Next: Fall Armyworm keeps spreading and becomes more destructive

Home  |  Pesticide  | Adjuvant  | Sitemap  | News Center  |  Contact Us
Address: No.2,Lane 1123,Kangqiao Road, Pudong New Area, Shanghai 201315 ,China   Tel : 0086 21 38122007   Fax : 0086 21 38122006    Email:
Keywords:Organic Silicone Agricultural Additive, Polyether Modified Trisiloxane, Organic Silicone Surface Agent, Wetter, Spray Regulator, Pests, Rice, Rice Weevil,
Aggregate Sheath Spot Of Rice, Piricularia Leaf Spot Of Rice, Brown Spot, Bipolaris Oryzae, Panicle Mite, Cockspur Grass, Cyperus Difformis, Forb Steppe,
Banded Sclerotial Blight, Tea, Tea Mosquito Bug, Helopeltis Antonii, Empoasca Flavescens, Tea Green Leafhopper, Tea Tortrix-Caterpillar,
Homona Coffearia, Tea Flush Worm, Cydia Leucostoma, Scarlet Tea Mite, Brevipalpus Phoenicis, Soybean, Phytophthora, Rhizoctonia,
Soybean Aphids, Fusarium Wilt, Wheat, Wheat Aphids, Armyworms On Wheat, Greenbugs, Cereal Leaf Beetle,
Wheat Stripe And Stem Rust, Corn, Root-Knot Nematode, Gray Leaf Spot, Northern Corn Leaf Blight,
Sweet Corn Rust, Aspergillus Flavus, Aspergillus Ear Rot