- Author: Emily Dooley
- Posted by: Gale Perez
Hanson and team battle invasive species
At first glance, Orobanche ramosa looks like an interesting blossoming plant, one that could add a unique flair to flower arrangements. But it's a parasitic weed that attaches to roots, sucks out nutrients and is threatening California's $1.5 billion processing tomato industry.
The weed's tiny seeds — smaller than finely ground pepper — can survive in soil for many decades and be carried by wind, water, soil transfers and even footwear. If found attached to crop plants and reported to the state, farmers are required to destroy the field before harvest, taking large losses not covered by...
/h2>- Author: Konrad Mathesius
Summary Review
Results from this year's Italian ryegrass (IR) herbicide trials helped quantify differences in herbicide resistance among IR populations within the southern Sacramento Valley. The trial took place in Bird's Landing, CA (near Rio Vista), and was replicated farther north in Esparto, CA.
- Trials from this year suggest that Osprey-resistant IR populations often associated with the area around Dixon, CA could extend at least as far south as Bird's Landing with only 26% control of IR by Osprey in the trial site.
- The Osprey-resistant population appears to also be moderately resistant to Simplicity, another herbicide in the same chemical...
- Author: Pershang Hosseini
- Author: Alison Colwell
- Author: Bradley Hanson
- Posted by: Gale Perez
The Orobanchaceae family comprises 270 holoparasitic species that cannot photosynthesize. Instead, they rely entirely on the host plant roots for nutrition, and can produce great numbers of minute, dust-like seeds that last for years in the soil. This family contains some of the most serious agricultural parasites in the genera of Phelipanche and Orobanche some of which are present in California. The different species can be distinguished by the degree of branching of their stems and presence/absence of bracteoles at the base of the flower Orobanche species have unbranched stems and no bracteoles, while Phelipanche species feature branched stems with bracteoles. In this paper, we discuss three...
- Author: Trina Kleist
- Posted by: Gale Perez
Auto emissions 'fertilize' fuel
Joshua trees burning in the Mojave Desert are the victims of changing patterns of wildfire, fueled by the spread of grasses that are not native to the region, restoration ecologist Justin Valliere told media in recent interviews.
In late July, Valliere was still settling into his new job at the Department of Plant Sciences when the York Fire erupted in the Mojave National Preserve in southern California. The area includes the western range of the Joshua tree, a unique type of yucca that has...
- Posted by: Gale Perez
Anil Shrestha (Weed Science Professor, with the Department of Plant Science at CA State University, Fresno) will be speaking at the Association of Applied IPM Ecologist (AAIE) Annual Conference in Visalia, CA. His talk on "Managing weeds in an IPM program. Ecology plays a big part." is scheduled for Nov. 7, 2023.
Visit the AAIE website for information on the conference: https://www.aaie.net/events2.
AAIE conference agenda attached.