- Author: Luis Espino
- Posted by: Gale Perez
From the UC Rice Blog :: 4/25/2016
Author: Luis Espino
In addition to the well-known rice weeds we deal with every year, there are a couple of weeds I want to bring to your attention this year. One is an invasive and the other has been with us for a while.
The winged primrose willow was identified in 2011 in several rice fields near Richvale in Butte County. Since then it has spread to several other fields, up to 3.5 miles south of Richvale. Winged primrose willow was recently given an “A” pest rating by CDFA. What this...
- Author: Lindsay M. Jordan
Capitalizing on a wet winter, many cover crops established very well in San Joaquin Valley vineyards this year– it has not been uncommon to see stands of barley, mustard, and other species grow taller than 3 feet in vineyard interrows. A robust cover crop planting can offer many benefits to your vineyard site. Winter cereals can break up compaction with their fibrous root systems and legumes can fix nitrogen and contribute to vine nutrition. All cover crop plant species can be used to protect the soil surface from erosion and crusting, improve water infiltration, and provide structure-building organic matter to the soil when mowed or cultivated.
However, it has not only been intentionally seeded cover crops that took...
- Author: Cheryl A. Wilen
On April 1, 2015 Governor Brown mandated a 25% water reduction in urban water use. While you may have seen the news articles about some private citizens or even some public areas being irrigated like water is an unlimited resource, my observation is that most homes and public areas are in fact reducing their outdoor water use.
However, there were some problems that are coming along with that. I first noticed it when I was walking to the UC Riverside campus on April 14. The landscapers had cut off the water to the medians so all the turf was dead but now some drought tolerant weeds were growing. I think the campus had cut off irrigation to “non-essential” areas so that they could maintain adequate...
- 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...