The global horticultural trade in ornamental plants is well known to be a primary source of non-native invasive plant introductions worldwide. In the United States, non-native species make up as much as 80% of the ornamental nursery stock and account for most nursery revenue. Although only a small percentage of these species escape cultivation and become invasive, the large number and diversity cultivated, especially in California, results in ornamental plants contributing to more than half of the invasive weeds currently damaging California's wildlands and remnant natural areas in urban landscapes.
The majority of ornamental plants are purchased and grown by the public. Thus, educating consumers to make informed choices towards...
- Posted by: Gale Perez
Integrated Pest Management Specialist
- 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...
- Author: Thomas Getts
While typically associated with timber production and arborists, chainsaws are one of the tools available to those tasked with removing non-desirable woody vegetation. What a fun, powerful, and dangerous tool they are! Ranging from small light electric saws to two-stroke saws with 30 inch bars, there is a chainsaw manufactured to fit your needs. After working a saw all day, the old adage “less is more” may come to mind, as smaller saws are easier to handle over long hours.
Recently, I have been helping out with a document focused on non-chemical control methods for weeds. While contributing to the section on chainsaws, it made me reminiscent of work I conducted in graduate school. The project I worked on focused on...
- Posted by: Ann King Filmer
- Re-posted by: Gale Perez
Processing tomato growers are struggling to contain a potentially devastating parasitic weed that had not been seen since growers waged a successful eradication campaign four decades ago.
Branched broomrape is so...