- Author: Stephanie Parreira
Invasive species are plants, animals, fungi or microbes that are not native to an area, but can quickly establish, multiply, and become pests. These species can hurt the environment, agricultural production, and even human health in some instances (e.g. the mosquito Aedes aegypti). According to the USDA, invasive species are responsible for $137 billion per year in economic losses in the United States.
In agricultural systems, invasive species may reduce yields, render crops unmarketable, or make rangeland unfavorable to livestock. In natural areas, they may squeeze out native species, change soil quality, and increase the frequency or intensity of...
- Author: Joseph DiTomaso
In 1997-1998, the big El Nino year in California, yellow starthistle (Centaurea solstitialis) (YST) infestations throughout the state were probably the largest that I have seen in my time in California. Not only were the infestations the densest, but the size of the plants often exceeded six feet tall. The reason for this is that water uptake by the roots of YST in the Sacramento Valley and surrounding foothills is highest between March and June in both shallow and deep soils. In contrast, water uptake by annual grasses is highest earlier in the season and only in shallow soils. During the El Nino year of 1997-1998, there was plenty of available soil water long after grasses had completed their life cycle and the extensive...
- Posted by: Gale Perez
Here's something from the Aquatic Plant Management Society blog :: posted Feb. 2017
(Original source: East County Today)
DBW Begins Herbicide Treatment in the Delta for Water Hyacinth and Egeria.../span>
- Author: Gale Perez
The latest edition of the Lassen Farm Advisor's Update newsletter is out. The Feb. 2017 issue contains the following articles:
- Posting of the 2016 Lassen County Weed Research Report
- Description of Other On-going Weed Research Trials
- Roundup Ready Alfalfa: Minimizing Injury While Maximizing Weed Control
The newsletter is written by Tom Getts, Weed Ecology and Cropping Systems Farm Advisor.
Here's the link to the newsletter: http://celassen.ucanr.edu/newsletters/Farm_Advisors_Update67897.pdf....
- Author: Stephen Flanagan
- posted by: Brad Hanson
I've reposted (with permission) Stephen Flanagan's article from The IR-4 Project. Check out the whole issue "Volume 48 No.1 Winter 2017" for several interesting articles from a program that is incredibly important to pest management in specialty crop agriculture./span>