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Weed Identification and Control Workshop

Sponsored by: University of Idaho Cooperative Extension, Teton Soil Conservation District, and Friends of the Teton River. Featured weed identification, how to control weeds (chemical, biological and mechanical) and aquatic invasive species.

Presenters included: Ben Eborn, University of Idaho’s Teton County Extension Educator; Bryce Fowler, Fremont County Weed Specialist; and Jason Cook, Simplot Crop Specialist

Musk Thistle

Bryce Fowler from Fremont County presented the risks and prevention of the spread of aquatic invasive species.  In particular, he presented how the invasive species hydrilla and zebra mussels are a huge problem and that it is illegal if someone from another state brings in these species to Idaho. For example, Lake Mead in Nevada has a huge mussel problem. Due to the problem, there are sprayers at many lakes to clean your boat, as you cannot leave the state with the weeds. 140 degrees F is the only thing that kills the mussels, not chemicals or scrubbing, just really hot water. If an inspector finds any noxious weeds on your boat, it will need to be cleaned and quarantined for 30 days.

Ben Eborn with Idaho Extension spoke next. He discussed some of the most common noxious and “obnoxious” weeds in Teton County, how to identify them, and some integrated pest management strategies to control them. There are now 64 plants on the noxious weed list for Idaho, up from 57 in the last edition of Idaho’s Noxious Weeds.

Last, Jason Cook from Simplot presented on how to read chemical labels and calibrate sprayers. He discussed some of the most common herbicides to use in our area on larger farms in the Valley, instructions on how to safely apply them, and how to effectively apply them if you follow the instructions closely.


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