- Author: Angela Calderaro
- Author: David Bubenheim
- Posted by: Guy B Kyser
Through a partnership with National Aeronautics and Space Administration (NASA), as a part of the U.S. Department of Agriculture – Agricultural Research Service (USDA-ARS) Delta Regional Areawide Aquatic Weed Project (DRAAWP), NASA has developed Floating Aquatic Vegetation (FAV) mapping tools intended for operational use by DBW. An initial tool based on the Landsat Satellite provided Division of Boating and Waterways (DBW) with map imagery from satellite data that depicted live water hyacinth and water primrose acreage of areas with 30-meter pixels at approximately 14-day intervals. The FAV Mapping Tool is being modified to utilize a new satellite, Sentinel-2, with increased spatial and spectral resolution as well as...
From the Topics in Subtropics blog
The following article is from the UC ANR Integrated Pest Management website, authored by Cheryl Wilen.
Puncturevine (Tribulus terrestris) is an aptly named summer annual found widely in California. Native...
- Author: Guy B Kyser
Saw a nice article about a gall fly soon to be released for control of Cape ivy. Our old friend Baldo from CDFA started work on this in 2001, so it's been a while coming. Cape ivy is our version of kudzu, at least along the coast.
- Author: Carl E. Bell
- Posted by: Gale Perez
Some tips on grazing for invasive plant control
Using livestock for controlling invasive plants has a lot of appeal; the animals seem like a natural, green method; they're cute; and at times they can be a very inexpensive way to do some weed control. But there are also various difficulties and issues with using livestock that should be understood before you jump into a grazing program, I've discussed some below.
Livestock have different eating preferences and needs; Cattle (photo of cattle courtesy of Jack Kelly Clark, UCANR) like grass, sheep like grass and forbs, goats like browse (foliage on stems of woody shrubs, young stems and bark, like photo), and horses like grass.
- Reposted by: Gale Perez
- Author: Carl E. Bell
Onionweed (Asphodelus fistulosus) is an attractive but very difficult to control weed that is relatively common along highways, some irrigation right of ways and other areas in Southern California. It likely came to our area as an ornamental plant, maybe as part of a seed mix or used (I was told) in reclamation projects in the north county area of San Diego. Once you learn to recognize it, it is easy to spot in spring and summer, especially along interstate 5 from La Jolla and on north at least as far as San Luis Obispo County. Photo 2 is from a restoration site in San Diego...