- Author: Elise S Gornish
This deadline to submit an abstract for the California Invasive Plant Council (CAL-IPC) Symposium is June 15, a week from Monday! Land managers who have great on-the-ground projects but don't normally think about presenting at conferences and researchers are especially encouraged to submit an abstract for a talk or a poster.
Abstract instructions and the submission form are available at http://www.cal-ipc.org/symposia/presenters.php
- Author: Oleg Daugovish
- Posted by: Gale Perez
From the Topics in Subtropics blog :: July 5, 2013
It is not always easy to kill weeds with herbicides for several reasons, but if you apply the right material at the right time to susceptible weeds you expect control. But you should never assume it, because resistant weeds rely on this assumption.
Repeated use of herbicides with the same mode of action (usually the same target site within plant) selects for naturally occurring resistance traits in weed population. The few resistant weeds proliferate since there is no longer competition from susceptible types and if other control measures are not...
- Author: Kurt J. Hembree
- Posted by: Gale Perez
While both horseweed and hairy fleabane have been here since farming began in the region, it's only since about 2003 that they have become such an obvious problem, particularly in tree and vine systems and non-crop areas.
In the past, the traditional use of combinations of pre- and postemergence herbicides and/or cultivation was adequate to manage them. However, recent changes in environmental regulations, economics, herbicide use patterns (toward more postemergence-only programs), treatment timing, and glyphosate-resistant biotypes have all contributed to the problem. Other factors contributing to their spread include, high seed production, wind dissemination, lack of seed dormancy requirement, preference for undisturbed areas...
- Author: Lynn M. Sosnoskie
You just KNOW that some plants are considered weeds. Their common names give them away. They sound awful. Giant hogweed (Heracleum mantegazzianum). Ripgut brome (Bromus diandrus). Devil's claw (Proboscidea lutea). Smellmelon (Cucumis melo). Itchgrass (Rottboellia cochinchinensis). Dog-strangling vine (Cyanthum rossicum).
Others...well, others seem more benign. Even sweet. For Valentine's day I present to you nine weedy plants with lovely names. Enjoy...
1. Tree-of-Heaven (Ailanthus altissima). How celestial (Sigh...). How divine (Sigh...). How invasive (sigh...wait, what?). Tree-of-heaven is a deciduous tree, native...
Here's more on Mark Lundy...
A new year and a new farm advisor in Colusa‐Sutter‐Yuba
Hello, I’m Mark Lundy, a new Agronomy Advisor in Colusa‐Sutter‐Yuba, based out of the Colusa office. With 2014 underway, I wanted to send out a brief note to introduce myself and give a brief sketch of some of the work I’ve initiated since I began in July of 2013.
Where are you from?
I’m from Arizona originally, but I’m starting my 9th year living here in California. For most of that time I’ve lived in or around Davis where I was a graduate student for 6 years and earned an MS in International Agricultural Development and a PhD in Horticulture and Agronomy. Prior to graduate...