- Author: Ben Faber
Water Measurement and Reporting Course
This training will be held on
Friday June 7th, 2019
from 1:00 p.m. – 4:30 p.m.
At the Santa Ynez Community Services District,
1070 Faraday St., Santa Ynez, CA 93460
Senate Bill 88 requires that all surface water right holders who have previously diverted or intend to divert more than 10acre-feet per year (riparian and pre1914 claims),or who are authorized to divert more than 10acre-feet per year under a permit, license, or registration, to measure and report the water they divert. Detailed information on the regulatory requirements for measurement and reporting is available on the State Water Resources Control Board “Reporting and Measurement Regulation” webpage. The legislation as written requires that for diversion (or storage) greater than or equal to 100 acre-feet annually that installation and certification of measurement methods be approved by an Engineer/Contractor/Professional. Diverters across CA were concerned about this requirement.
California Cattlemen's Association heard from their membership and worked with Assemblyman Bigelow on a bill that would result in a self-certification option. Assembly Bill 589 was passed and became law on January 1, 2018. This bill, until January 1, 2023, allows any diverter, as defined, who has completed this instructional course on measurement devices and methods administered by the University of California Cooperative Extension, including passage of a proficiency test, to be considered a qualified individual when installing and maintaining devices or implementing methods of measurement. The bill requires the University of California Cooperative Extension and the Board to jointly develop the curriculum for the course and theproficiency test.
At the workshop you will:
- Clarify reporting requirements for farms andranches.
- Understand what meters are appropriate for differentsituations.
- Learn how to determine measurement equipmentaccuracy.
- Develop an understanding of measurementweirs.
- Learn how to calculate and report volume from flowdata.
Registration is required; there is a fee of $25.
Registration link here.
(https://ucanr.edu/survey/survey.cfm?surveynumber=27389)
For questions, please contact Matthew Shapero at (805) 645-1475 or mwkshapero@ucanr.edu. For other helpful resources regarding water measuring, reporting, and AB 589, please visit: https://ucanr.edu/sites/AB589/
/span>/h1>/h1>/h1>/h1>/h1>- Author: Ben Faber
World Bee Day
https://www.un.org/en/events/beeday/
And more things to learn in this slide set
https://www.slideshare.net/sdroege/25-facts-about-wild-bees-in-north-america
- Author: Ben Faber
Impacts of the invasive shot hole borer (Euwallacea kuroshio) are linked to sewage pollution in southern California: the Enriched Tree Hypothesis
By: John M. Bolandand Deborah L. Woodward
https://peerj.com/articles/6812.pdf
The Kuroshio Shot Hole Borer (KSHB, Euwallacea kuroshio) and the Polyphagous Shot Hole Borer (E. whitfordiodendrus; Coleoptera: Curculionidae: Scolytinae) have recently invaded southern California and are attacking live trees in commercial agriculture groves, urban parks and native riparian forests. Among native forests the worst impacts observed to date have been in the Tijuana River Valley in south San Diego County, where approximately 30% of the native willows (Salix spp.), or120,000 trees, have died as a result of a KSHB infestation. This paper examines wood densities, wood moisture contents, KSHB infestation rates, and KSHB-induced mortality rates in two willow species (Salix lasiolepis and S. gooddingii) at sites near and far from sewage input. Comparisons were made on two spatial scales: broadly among sites within San Diego County; and locally among sites within the Tijuana River Valley. The results showed that, on average, willow trees growing closest to sewage pollution had significantly lower wood density, higher wood moisture content, higher KSHB infestation rates, and higher KSHB-induced willow mortality rates than those growing farther away. We present the Enriched Tree Hypothesis to explain the link between sewage pollution and KSHB impacts; it is as follows: (A) Riparian trees subject to nutrient enrichment from frequent sewage pollution grow quickly, and their fast growth results in wood of low density and high moisture content. If attacked by the KSHB, the trunks and branches of these nutrient-enriched trees provide an environment conducive to the fast growth of the symbiotic fungi upon which the KSHB feeds. With an abundant food supply, the KSHB population increases rapidly and the trees are heavily damaged by thousands of KSHB galleries in their trunks and branches. (B) Riparian trees not subject to frequent sewage pollution grow more slowly and have denser, drier wood. Conditions in their trunks and branches are not conducive to the fast growth of the KSHB's symbiotic fungi. The KSHB generally ignores, or has low abundances in, these slow-growing trees. This new hypothesis explains current patterns of KSHB impact in San Diego County and focuses attention on the important roles of the environment and preexisting conditions of trees in determining the extent of KSHB impact .It highlights the Tijuana River Valley as an unusual site due to high sewage inputs and predicts that the high KSHB-induced willow mortality seen there should not occur in other natural riparian habitats in southern California. Most importantly, by identifying sewage pollution (or nutrient enrichment) as a major risk factor for KSHB impacts, the hypothesis ratchets down the KSHB-threat level for most riparian sites in southern California and directs attention to other nutrient-enriched sites as those most at risk.
The complete article can be found at:
https://peerj.com/articles/6812.pdf
Two newly published scientific journal articles that address SHB species delineation are:
- Gomez et al. Species Delineation Within the Euwallacea fornicatus. in Insect Systematics and Diversity, (2018) 2(6): 2; 1–11. (Attached) Richard Stouthamer and Paul Rugman-Jones, both with UC Riverside, are two of the co-authors
- Hulcr, J & Landers, J. January 7, 2019. So Many Shot Hole Borers: New research charts four nearly identical species. in Entomology Today. https://entomologytoday.org/2019/01/07/so-many-shot-hole-borers-new-research-charts-four-nearly-identical-species/
Examples of ambrosia beetle impact on willows. (A top) KSHB excavate galleries within a trunk and push the sawdust tailings out of their entrance holes. (B lower) Trees can be undermined by many galleries and snap in high winds. [These pictures show the extremes – infested trunks do not always look like A, and infested trunks do not always break, like B. Images: John Boland]
- Author: Ben Faber
WESTMINSTER, Colorado - An article in the most recent edition of the journal Weed Science shows that cover crops can play an important role in slowing the development of herbicide resistant weeds.
Researchers conducted field experiments in Pennsylvania to explore how cover cropping tactics influenced the management of horseweed in no-till grain crops. Seven cover-cropping treatments were used over two subsequent growing seasons.
There were several significant findings. In comparison to fallow control plots, cover crop treatments reduced horseweed density at the time of a pre-plant, burndown herbicide application by 52% in the first year and 86% in the next. This reduced the herbicide "workload" and lowered the selection pressure for resistant weeds. Cereal rye alone or in combination with forage radish was found to provide the most consistent horseweed suppression.
Importantly, winter hardy cover crops also reduced horseweed size inequality - meaning fewer large horseweed plants were found at the time of herbicide application. Researchers say this reduces the chance of a size-dependent fitness advantage for horseweed biotypes that develop herbicide resistance.
"Our hope is that understanding the complementary relationship between cover crops and herbicides can lead to new weed control strategies that slow the development of herbicide resistance," says John M. Wallace, Ph.D., of Pennsylvania State University.
Full text of the article "Cover crop effects on horseweed (Erigeron canadensis) density and size inequality at the time of herbicide exposure" is now available in Weed Science Volume 67, Issue 3.
- Author: Ben Faber
Snails and Slugs (May 22, 2019 from 3-4pm)
Presenters: (!) Dr. Cheryl Wilen (UC IPM), (2) Dr. Rory Mc Donnell and (3) Dr. Dee Denver (Oregon State University), (4) Dr. Adler Dillman and (5) Dr. Irma De Ley (UC Riverside). The webinar will cover an overview of snail and slug biology, damage and management with emphasis on brown snail and Italian white snail, and current research on slug biocontrol using nematodes. One DPR CE unit (other) and one CCA CE unit (IPM) are approved.
And What Else Are the
UC Ag Experts
Talking About?
Event Name | Date |
---|---|
UC Ag Experts Talk: Snails and slugs | 5/22/2019 |
Uc Ag Experts Talk: Management of Weeds in Citrus Orchards | 6/19/2019 |
UC Ag Experts Talk: Citrus Dry Root Rot | 7/24/2019 |
What is involved in the webinars?
A series of 1 hour webinars, designed for growers and Pest Control Advisors, will highlight various pest management and horticultural topics for citrus and avocados. During each session, a UC Expert on the subject will make a presentation and entertain write-in questions via chat during and/or after the presentation. As we develop this program, we may expand to other crops.
Topics: pests and diseases of citrus, avocado and other crops
And Next up is:
Management of Weeds in Citrus Orchards (June 19, 2019 from 3-4pm)
Dr. Travis Bean, assistant weed science specialist in UCCE, will discuss the importance of weed management in citrus, tree age and variety considerations, scouting and weed identification, cultural and mechanical practices, and pre- and post-emergence herbicides. One DPR CE unit (other) and one CCA CE unit (IPM) are pending.
Register in advance for the webinars by clicking on the event links above.
Are there Continuing Education units?
When the subject discusses pest or disease management, continuing education units will be requested from DPR (1 unit per session). Participants will pre-register, participate in the webinar and be awarded the unit. The sessions will be recorded and hosted on this web site for future study. However, continuing education units will be awarded only to the participants who attend the live version of the webinar.
Who is involved?
This webinar series is brought to you by Ben Faber (UC ANR Ventura Advisor) and Dr. Beth Grafton-Cardwell (Depart of Entomology UC Riverside Extension Specialist) with the technical support of Petr Kosina (UC IPM Contect Development Supervisor) and Cheryl Reynolds (UC IPM Interactive Learning Developer).