From the Western IPM Center November 2019 newsletter... Kochia is a tumbling weed plaguing growers and ranchers from Central Canada to West Texas. It's salt tolerant, heat tolerant, cold tolerant, said Kent Davis, a crop consultant with Crop Quest in Colorado.
Many factors make weed management on federal public lands an interesting challenge. In September I was invited to join one of the Sierra National Forest Rangeland Management Specialists to explore a medusahead infestation in one of the grazing allotments she manages.
In late October we made our monthly trip to sample curlyleaf pondweed in the Sacramento-San Joaquin Delta. On an island in the lower San Joaquin river, we spotted goats eating waterhyacinth (Eichhornia crassipes) and waterprimrose (Ludwigia sp.) along the shoreline.
Its not too late to register for the San Joaquin Valley Spray Application Short Course (November 12-14). Here's a link to the webpage: https://ucanr.edu/sites/SJVSprayApplication/Home/ Here's a link to the full agenda: https://ucanr.