UC Weed Science (weed control, management, ecology, and minutia)

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.

Exotic water primroses (Ludwigia spp.) are aggressive invaders in both aquatic and riparian ecosystems. The plants form dense mats over the water surface. These mats constrain navigation and interfere with recreational activities, irrigation, drainage, and agricultural production.

Reposted from the UCANR Sacramento Valley Field Crops blog Summary Note Mechanical cultivation is a useful tool in controlling herbicide-resistant Italian ryegrass individuals in a rainfed wheat system but is only about half as effective as Axial in reducing overall pressure from Italian ryegrass (e...

A new species of gigantic tumbleweed once predicted to go extinct is not only here to stay -- it's likely to expand its territory. The species, Salsola ryanii, is significantly larger than either of its parent plants, which can grow up to 6 feet tall.