- Author: Jeannette E. Warnert
Ashraf El-Kereamy named UCCE citrus specialist
Ashraf El-Kereamy was appointed UC Cooperative Extension citrus horticultural specialist in the Department of Botany and Plant Sciences at UC Riverside on Feb. 1, 2019. He is based at the UC Lindcove Research and Extension Center in Exeter.
El-Kereamy had been working as a UCCE area viticulture advisor serving Kern, Tulare and Kings counties since 2014.
Prior to joining UCCE, El-Kereamy was a post-doc research associate at University of Guelph in Ontario, Canada, studying plant drought and heat stress tolerance in plants from 2013 to 2014, and studying the genotypes variation in nitrogen use efficiency and plant heat stress tolerance from 2008 to 2012. From 2012 to 2013, he was assistant/associate professor in the Department of Horticulture, Ain Shams University, Egypt, where he taught undergraduate and postgraduate courses for horticultural science and served as the principal investigator for a U.S.-Egypt joint collaborative research project between University of Wyoming and Ain Shams. As a post-doctoral scientist at the University of Guelph, El-Kereamy studied the pathogenesis-related proteins during plum fruit ripening. As a University of Manitoba post-doc, he studied the physiological role of abscisic acid in plants.
El-Kereamy earned his doctorate degree in agriculture with an emphasis in grape physiology and molecular biology at Toulouse University, in France, and a master's degree in pomology and bachelor's degree in horticulture, both from Ain Shams University, in Cairo, Egypt.
Giuliano Galdi joins UCCE in Siskiyou County
Giuliano C. Galdi joined UCCE on Jan. 2, 2019, as a UC Cooperative Extension agronomy advisor in Siskiyou County.
Prior to joining UCCE, Galdi was a junior specialist at UC Davis, where he worked on a variety of field trials aimed at improving sustainable water use and hay quality. Tasks included irrigation scheduling, planting/harvesting trials, and data handling and analysis. As a master's student and student research assistant at Fresno State, Galdi evaluated salinity tolerance in different alfalfa varieties and presented research in the form of posters and talks. He speaks Portuguese fluently.
Galdi earned a master's degree in plant sciences from Fresno State and a bachelor's degree in agronomy engineering from University of Sao Paulo, Brazil.
Galdi is based in Yreka and can be reached at (530) 842-2711 and firstname.lastname@example.org.
Follow him on Instagram and Twitter at @uccesiskiyou.
Ian Grettenberger joins UCCE as field and vegetable crops specialist
Ian Grettenberger joined UCCE on Jan. 2, 2019, as a field and vegetable crops assistant specialist in the Department of Entomology and Nematology at UC Davis. Grettenberger is interested in advancing integrated pest management in field and vegetable crops, plant-insect interactions, and applied insect ecology.
Grettenberger earned a doctorate degree in entomology from Penn State University and a bachelor's degree in biology from Western Washington University.
Prior to joining UCCE, Grettenberger was a postdoctoral research scholar at UC Davis, working first with UCCE entomology specialist Larry Godfrey and then UCCE entomology specialist Frank Zalom.
Yu Meng joins UCCE in Imperial County
Yu Meng joined UC Cooperative Extension on Jan. 2, 2019, as the youth, families and communities advisor serving Imperial County, UC Desert Research and Extension Center and communities near the U.S.-Mexico border. Her responsibilities will focus on providing community development programs in the area of youth, families and communities, with major outreach to Latino youth and families.
Prior to joining UCCE, Meng worked for a USDA-funded project known as "the WAVE~Ripples for change" in collaboration with Oregon State University professionals, extension, community partners, high school soccer coaches, school districts and other volunteers. The program was designed to prevent unhealthy weight gain among 15- to 19-year-old soccer players. Most of the youth she worked with were Latinos and from low-income families. During this time, Meng helped develop and test the first sports nutrition, physical activity, family and consumer sciences curriculum for active youth. Her work resulted in positive developments in youth, reducing added sugar intake, maintaining fruit and vegetable intake over time, and improving the awareness of sports nutrition. Participating youth also applied additional skills they learned from gardening and cooking workshops at their homes, and shared the lessons and practical applications with their families.
Meng is fluent in Chinese and originally from China, where she worked for food industries and started to notice the nutrition issues with processed foods and their effects on children's health. With that in mind, she came to the U.S. and studied nutrition.
She completed a doctorate degree in nutrition science from Oregon State University, a master's degree in food science and nutrition from Utah State University, and a bachelor's degree in food science and engineering from Southern China University of Technology, China.
Meng is based in Holtville and can be reached at (442) 265-7700 and email@example.com.
Beatriz Nobua-Behrmann named UCCE advisor in urban forestry and natural resources
Beatriz Nobua-Behrman joined UC Cooperative Extension as an urban forestry and natural resources advisor serving Orange and Los Angeles counties on March 25, 2019.
As a UCCE staff research associate in Orange County since 2017, Nobua-Behrman provided management and direction to conduct a research and extension program focused on the impact of invasive insects on urban landscapes and wildlands surrounding urbanized environments. The main focus of the program was to conducting surveys of infestations in regional parks and open spaces in order to develop management strategies that are efficacious and economically feasible.
Nobua-Behrmann completed bachelor's and doctorate degrees in biology from the University of Buenos Aires in Argentina.
Nobua-Behrman is based at the UC South Coast Research and Extension Center in Irvine. She can be reached at (949) 301-9182, Ext. 1006, firstname.lastname@example.org.
Ryan Tompkins named forestry and natural resources advisor
Ryans Tompkins joined UC Cooperative Extension as a forestry and natural resources advisor on March 18, 2019, serving Plumas, Sierra and Lassen counties. Prior to joining UCCE, Tompkins held forester positions with the U.S. Forest Service, worked in the fire effects program with the National Park Service and served as associate faculty in the Environmental Studies Department at Feather River College, teaching forest ecology and management.
Most recently, Tompkins served as the forest silviculturist and vegetation program manager at the Plumas National Forest, where he designed, planned and implemented landscape-scale forest restoration projects.
Tompkins earned master's and bachelor's degrees in forestry from UC Berkeley.
Tompkins can be reached at (530) 83-6125, email@example.com.
Robert York joins UCCE as silviculture and forest specialist
Robert York joined UC ANR on Jan. 2, 2019, as a UC Cooperative Extension silviculture and applied forest ecology assistant specialist and adjunct associate professor of forestry in the Department of Environmental Science, Policy and Management at UC Berkeley. He directs research and management activity on the Berkeley Forests, a network of five research forests covering the western slopes of the Sierra Nevada mixed conifer forest from Shasta to Tulare counties.
York is a Registered Professional Forester in California. He earned a doctorate degree in forest ecology and silviculture, a master's degree in forest community ecology and a bachelor's degree in forest management, all from UC Berkeley.
Prior to joining UCCE, York has been the research station manager at Blodgett Forest Research Station with UC Berkeley.
York is based in Georgetown and can be reached at (530) 333-4475 and firstname.lastname@example.org.
Wine grape growers in the San Joaquin Valley who want to switch from hand pruning to mechanical pruning won't have to replant their vineyards to accommodate machinery, according to a new study published in HortTechnology by University of California Cooperative Extension researchers. Instead, growers can retrain the vines to make the transition, without losing fruit yield or quality.
Mechanical pruning reduced labor costs by 90%, resulted in increased grape yields and had no impact on the grape berry's anthocyanin content. That's welcome news for growers because the cost of re-establishing a vineyard in the region is roughly $15,600 per acre.
“We found that growers do not have to plant a new vineyard to mechanize their operations,” said Kaan Kurtural, UC Cooperative Extension specialist in the UC Davis Department of Viticulture and Enology. “We have proven beyond a doubt that an older vineyard can be converted to mechanization. There is no loss in yield during conversion and post-conversion yield is better and fruit quality is equivalent to or better than hand-managed vines. The economies of scale are evident in the savings per acre and per vine as depicted in the balance sheet provided with the newly published paper.”
The research was conducted in an 8-acre portion of a 53-acre, 20-year-old Merlot vineyard in Madera County. After completion of the research project, the grower converted the rest of the 53-acre vineyard to single high-wire sprawling system. Many other wine grape growers have followed suit.
The Wine Group, which manages 13,000 acres of vineyards across Central California, is establishing new vineyards and converting old vineyards for mechanical pruning and suckering, said vineyard manager Nick Davis. Davis, who works closely with Kurtural and the UCCE viticulture advisor in Fresno County, George Zhuang, said the company greatly values the UC Cooperative Extension research that is guiding the changes.
“I think extensionists are undervalued,” Davis said. “We lean on them for applied research, which has been wonderful. They offer us what we can't provide ourselves.”
More than half of all California wine grapes are grown in the San Joaquin Valley. Worker shortages, rising labor costs, low returns and occasional droughts are driving wine grape growers to seek innovative ways to sustain their businesses.
“To help growers maintain the profitability of their vineyards, we're studying the use of machines to reduce the number of people needed to perform tasks like pruning,” Zhuang said.
“Because the canopy architecture and yield characteristics of mechanically pruned vines are different from vines that are hand-pruned, the water and fertilizer requirements for the mechanically pruned vines can be quite different. So we are studying the yield and fruit quality of grapes produced on different rootstocks in mechanical pruning systems in the San Joaquin Valley,” Zhuang said.
The Madera field study was conducted for three consecutive seasons in the hot climate conditions typical of the San Joaquin Valley. In this area, traditional vineyards are head-trained to a 38-inch-tall trunk above the vineyard floor and two eight-node canes are laid on a catch wire in opposite directions and two eight-node canes are attached to a 66-inch high catch wire. Although this traditional training system can work for mechanical harvesting, it doesn't accommodate mechanical dormant pruning and shoot removal with limited success in other mechanical canopy management operations.
To accommodate mechanical pruning and shoot removal, the vines were converted to a bilateral cordon-trained, spur-pruned California sprawl training system, or to a bilateral cordon-trained, mechanically box-pruned single high-wire sprawling system.
The latter option proved to be the most successful system for mechanical pruning in the San Joaquin Valley.
California growers can download a new series of publications summarizing efficient nitrogen management practices from UC Agriculture and Natural Resources. The publications are designed to assist growers in complying with state regulations for tracking and reporting nitrogen fertilizer applied to crops, in an effort to prevent nitrogen from leaching into groundwater.
The science-based publications are associated with a series of trainings for growers and Certified Crop Advisers to develop efficient nitrogen management practices, an effort coordinated by UC ANR's California Institute for Water Resources.
“Our role is to provide farmers, agricultural consultants and policymakers the best science possible for making decisions on managing and protecting California groundwater,” said Doug Parker, director of the water institute.
The free publications, created from training materials, lessons learned from the training sessions and from additional UC research, can be downloaded at http://ucanr.edu/nmgmtpublications.
The following publications are now available for download:
· Principles of Nitrogen Cycling and Management
· Irrigation and Nitrogen Management
· Nitrogen Management for Nut Crops
· Nitrogen Management for Deciduous Fruit and Grapes
· Nitrogen Management for Citrus and Avocado
· Nitrogen Management for Cool-Season Vegetables
· Nitrogen Management for Strawberry Production
· Nitrogen Management for Processing Tomato
· Nitrogen Management for Corn on California Dairies
The publications were authored by Parker of California Institute for Water Resources; Patrick Brown, professor in the UC Davis Department of Plant Sciences; Allan Fulton, UC Cooperative Extension advisor, Tehama County; Tim Hartz, UC Cooperative Extension specialist emeritus, UC Davis Department of Plant Sciences; Dan Munk, UC Cooperative Extension advisor, Fresno County; Daniel Geisseler, UC Cooperative Extension specialist, UC Davis Department of Land, Air & Water Resources; Michael Cahn, UC Cooperative Extension advisor, Monterey, Santa Cruz and San Benito counties; Richard Smith, UC Cooperative Extension advisor, Monterey, Santa Cruz and San Benito counties; Marsha Campbell, UC Cooperative Extension advisor emeritus, Stanislaus County; Sat Darshan Khalsa, UC Davis project scientist; and Saiful Muhammad, UC Davis graduate student.
Developed in 2014, the training program has been offered at 11 different locations around the state, most recently in Fresno. More than 1,000 Certified Crop Advisers have taken the training.
The nitrogen management training curriculum was developed by a group of UC ANR faculty, specialists and advisors. The first day focuses on the nitrogen cycle in crop production systems, nitrogen sources, irrigation and nitrogen management, and nitrogen budgeting. The second morning covers annual and permanent crops and nitrogen planning practices.
For more information on the nitrogen management training materials, visit http://ciwr.ucanr.edu/NitrogenManagement.
The Nitrogen Management Training and Certification Program is a joint effort between the California Department of Food and Agriculture, UC Agriculture and Natural Resources, California Association of Pest Control Advisers' Certified Crop Adviser Program and the Regional Water Boards.
The first-ever cost study of primocane-bearing blackberries in California has been published by UC ANR's Agricultural Issues Center and UC Cooperative Extension. With primocane-bearing, growers can extend the blackberry production season.
“What differentiates primocane-bearing blackberry from the traditional floricane-bearing is that it bears fruit in the first year rather than the second,” explained co-author Mark Bolda, UC Cooperative Extension advisor.
“Which, of course, opens a world of opportunity for growers, since they are able to produce fruit in the first year rather than the second as has traditionally been the case,” Bolda said. “That's what makes this study so interesting to us.”
Primocanes are the green, vegetative stalks of the blackberry plant, generally the first-year cane. The second year, they become floricanes, flowering and fruiting.
The study presents sample costs to establish, produce and harvest primocane-bearing blackberries in the Central Coast Region of Santa Cruz, Monterey and San Benito counties.
The analysis is based on a hypothetical well-managed farming operation using practices common to the region. The costs, materials and practices shown in this study will not apply to all farms. Growers, UC ANR Cooperative Extension farm advisors and other agricultural associates provided input and reviewed the methods and findings of the study.
This study assumes a farm operation size of 30 contiguous acres of rented land, with primocane-bearing blackberries for fresh market planted on 15 acres. The crop is hand-harvested and packed into 4.5 pound trays. During the establishment year, there is a four-month harvest – July through August. Primocane blackberries can produce fruit on first-year growth. There is also a four-month harvest for each of the four production years.
The authors describe assumptions in detail and present a table of costs and returns based on those assumptions about production, input materials, prices and yields. A ranging analysis shows the impact on net returns of alternative yields and prices. Other tables show the monthly cash costs, the costs and returns per acre, hourly equipment costs, and the whole farm annual equipment, investment and business overhead costs.
The study also has an expanded section on labor, which includes information on California's new minimum wage and overtime laws.
“This work investigating the economics of a newer cultural system for our area came out of a close collaboration between UCCE academics and area growers,” said Bolda, who serves Santa Cruz, Monterey and San Benito counties, “so the level of detail and accuracy is outstanding.”
Free copies of this study and other sample cost of production studies for many commodities are available. To download the cost studies, visit the UC Davis Department of Agricultural and Resource Economics website at https://coststudies.ucdavis.edu
The cost and returns studies program is funded by the UC Agricultural Issues Center and UC Cooperative Extension, both of which are part of the UC Division of Agriculture and Natural Resources, and the UC Davis Department of Agricultural and Resource Economics.
For additional information or an explanation of the calculations used in the studies, contact the UC Agricultural Issues Center at (530) 752-4651 or UC Cooperative Extension advisors Mark Bolda (831) 763-8025 or Laura Tourte (831) 763-8005 in Santa Cruz County.
California water rights holders are required by state law to measure and report the water they divert from surface streams. For people who wish to take the water measurements themselves, the University of California Cooperative Extension is offering training to receive certification April 4 in Redding and Woodland.
At the workshop, participants will:
- Clarify reporting requirements for ranches.
- Understand which meters are appropriate for different situations.
- Learn how to determine measurement equipment accuracy.
- Develop an understanding of measurement weirs.
- Learn how to calculate and report volume from flow data.
UC Cooperative Extension is offering a limited number of trainings in 2019. The next trainings will be held at Shasta College Farm and Yolo County Fairgrounds:
- Shasta College Farm in Redding – Register by completing the form at http://ceshasta.ucanr.edu, emailing Larry Forero at email@example.com or Sara Jaimes at firstname.lastname@example.org, or by calling the UCCE office in Shasta County at (530) 224-4900. Training will begin at 8 a.m. and conclude at 11 a.m.
- Yolo County Fairgrounds in Woodland – Register at http://cecapitolcorridor.ucanr.edu or by emailing Morgan Doran at email@example.com or calling the UCCE office in Yolo County at (530) 666-8143. Training will begin at 2 p.m. and should conclude by 5 p.m.
Background on the water diversion law
Senate Bill 88 requires that all water right holders who have previously diverted or intend to divert more than 10 acre-feet per year (riparian and pre-1914 claims), or who are authorized to divert more than 10 acre-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 are available on the State Water Resources Control Board Reporting and Measurement Regulation webpage. For diversion or storage greater than or equal to 100-acre feet annually, the law requires approval of installation and certification of measurement methods by an engineer, contractor or other approved professional.
To make it easier for farmers and ranchers to comply with the law, the California Cattlemen's Association worked with Assemblyman Frank Bigelow on a bill that would allow people to get certified to take the measurements themselves. Assembly Bill 589 became law on Jan. 1, 2018. This bill, until Jan. 1, 2023, allows anyone who diverts water and has completed an instructional course on measurement devices and methods administered by UC Cooperative Extension, including passage of a proficiency test, to be considered qualified to install and maintain devices or implement methods of measurement. The bill requires UC Cooperative Extension and the water board to jointly develop the curriculum for the course and the proficiency test.