- Author: Brad Hanson
Two posts today to share news about the 66th annual meeting of the Western Society of Weed Science (WSWS) last week in San Diego. This first post will have links to WSWS news and information:
WSWS webpage: http://www.wsweedscience.org/
WSWS-sponsored publications: http://www.wsweedscience.org/Products/Products.asp?cat=1
- Includes the hot-off-the-presses reprinting of the classic "Weeds of the West" which is one of the best-selling weed ID books for the last ~20 years since it was first published.
- Also includes the...
- Posted by: Gale Perez
- Author: Joseph DiTomaso
Dr. Tom Lanini was made a Fellow of the Western Society of Weed Science (WSWS) in March 2013 at the annual meeting in San Diego. Tom is a Cooperative Extension Weed Ecologist in the Department of Plant Sciences at the University of California, Davis. He spent the first three years of his career at Penn State University and the subsequent 27 years UC Davis. Tom has provided significant service to the WSWS by serving on numerous committees. He has been very active in WSWS for more than 24 years. He has influenced weed management strategies in forest plantations, aquatics, roadsides, rangeland, wildlands, agronomic crops, orchards, and vegetable crops. He is considered an expert on dodder management and over the years has...
- Posted by: Gale Perez
- Author: Jeannette E. Warnert
Sahara mustard, a resilient weed native to North Africa and the Mediterranean, is invading desert landscapes in the American Southwest, squeezing out beautiful wildflower displays that attract tourists and maintain the local ecology, reported the San Diego Union Tribune.
UC Cooperative Extension is testing methods of removing Sahara mustard, including hand weeding, hoes and herbicide. But these are only stopgap measures meant to keep the plant at bay in select spots.
“I don’t think we’re ever going to spray the herbicide across the entire Southwest,” said
- Author: Guy B Kyser
This is part of a talk I gave last week in Marin County. These three annual thistles turn up everywhere in northern California, so it's nice to know them by name. They're mostly on disturbed sites, roadsides, and waste ground, but they can also establish on rangeland, pasture, and natural areas.They germinate and grow into rosettes during winter, then in spring they bolt and produce purple flowers.
Like a lot of our weeds, these species originated in southern Europe, southwestern Asia, and the Middle East. They 'learned' how to survive alongside human agriculture early on. |
Italian...
- Author: Lynn M. Sosnoskie
- Author: Brad Hanson
Herbicides are defined as a chemical substance that is used to eliminate unwanted plants. This is a very general description and it is important to remember that herbicides differ with respect to when they are used (for example, pre-emergence or post-emergence), their activity (for example, contact or systemic), their selectivity (for example, grasses or broadleaves), and their mechanism of action (also known as: mode of action, site of action). (See this blog post about basic herbicide terminology:http://ucanr.org/blogs/blogcore/postdetail.cfm?postnum=5973)
What is a mechanism of action? The...