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Program Review Dossier John A. Roncoroni University of California Cooperative Extension Weed Science Farm Advisor Merit Full Title Advisor II to III Napa County

TABLE OF CONTENTS

1 PROGRAM SUMMARY NARRATIVE INTRODUCTION 1 THEME 1:WEED CONTROL IN PERENNIAL CROPS 1

A. HERBICIDE RESISTANT WEEDS 1 B. CONVENTION HERBICIDE TESTING AND EDUCATION TRIALS 2 C. SUSTAINABLE AND ORGANIC WEED CONTROL IN VINEYARDS 2 THEME 2: CALIBRATION AND NOZZLE EDUCATION 3 THEME 3: URBAN EDUCATION AND MASTER GARDENERS 4 OTHER PROJECTS: RANGELAND AND INVASIVE WEEDS 4 UCIPM 5 UNIVERSITY SERVICE 5 PUBLIC SERVICE 5 PROFESSIONAL COMPETENCE 5 AFFIRMATIVE ACTION 6 DOCUMENTING LISTS PROFESSIONAL COMPETENCE 7 UNIVERSITY SERVICE 9 PUBLIC SERVICE 9 BIBLIOGRAPHY 10 PROJECT SUMMARY: TABLE EXTENSION ACTIVITY: TABLE SECTION C:GOALS FOR COMING YEAR

Program Summary Narrative

Program Review Dossier John A. Roncoroni University of California Cooperative Extension Weed Science Farm Advisor Merit Full Title Advisor II to III Napa County 1

Introduction This program review covers the three-year period from October 1, 2014 through September 30,

2017 and is documentation for my merit advance from Full Title Advisor II to Full Title Advisor III. I have been the Weed Science and Vegetation Management in Perennial Crops Farm Advisor in Napa County since March 2007. My primary responsibility is as Advisor and as Affiliate Area Weed Science UCIPM Advisor was to work with Farm Advisors, growers and pest control advisors (PCAs) in Napa and adjoining counties with weed management issues. My primary clientele are the grape growers, vineyard managers and others who assist in pest management decisions in California’s North Coast, primarily Napa, Sonoma, Lake and Mendocino Counties. California is home to the most high-profile vineyards and highly valued grapes produced in the country. California is the largest winegrape state with nearly 500,000 acres, much larger than the state in second, Washington, with 55,000 acres. I have established myself as a valuable resource for the growers, managers and PCAs and as a recognized expert in vineyard weed control issues throughout California and the western states.

I deliver hands-on, practical answers for my clientele and have broadened the scope of my program to include the development of long-term projects to help answer larger more complex questions.

During this review period I served as president of the California Weed Science Society and was appointed by the California Director of Pesticide Regulations to the Pest Management Advisory Committee (PMAC). I was selected to serve on the pest management technical advisory group for the California Sustainable Winegrower Association.

I have worked closely with the Napa County Agricultural Commissioner to bring UC and other experts to our area to help grape growers and urban landscape managers better understand the science behind glyphosate use. Because of the lack of UCCE advisors trained in weed science and my broad-based weed science experience in my university career, I am often asked to teach weed science to UC Master Gardeners and a wide array of urban audiences

As I bring my 35 plus year University career to a conclusion, I have spent more time mentoring several of new UCCE advisors. As UCCE loses more senior advisors it is incumbent on us to educate this ‘new generation’ of advisors on the important role that UC Cooperative Extension has played and continues to play in California.

Theme 1: Weed Control in Perennial Crops While my extension program encompasses several aspects, my research program is comprised entirely of weed control in perennial crops. I have broken this theme into three categories but my outputs and impacts will be summarized into one. While each of these categories is treated separately the information generated is disseminated in a fashion that the growers can evaluate to determine the best management practices for their specific situation. A. Herbicide resistant weeds The vast majority of grapegrowers now practice ‘no till’ or reduced tillage in their vineyards. Their reasons range from economic to environmental factors. Many grower groups, such as Napa’s Fish Friendly Farming, discourage the use of cultivation within vineyards to reduce soil erosion. Other factors include the disruption of grape roots near the soil surface and the cost and skill needed to operate a cultivator in the vineyard. These factors have contributed to a greater reliance on herbicides for weed control. Many growers rely heavily on postemergence herbicides which has led to an increase in the occurrence of herbicide resistant weeds. My interaction and outreach to growers lead to the discovery of multiple sites of herbicide resistance in the North Coast. Consultation with Drs. Brad Hanson and Marie Jasieniuk at UC Davis led to a USDA-NIFA-AFRI grant of $425,000 for “Evolutionary Changes In Ryegrass Populations Since Detection Of Glyphosate Resistance And Communication Of Resistance Management Strategies.” The majority of the funds for this project were used for genetic mapping and mechanisms, and has led to new resistance management strategies for growers.



Implementation of these management strategies led to a collaboration with Dr. Hanson on a multi-treatment test of herbicide combinations to control herbicide resistant annual ryegrass and other problem weeds. I collaborated on an additional project with Dr. Hanson and UCCE Advisors Steve Wright and Kurt Hembree to investigate the invasion potential of glyphosate-resistant junglerice, and other summer grass weeds. We found that there is potential for these weeds to move north from the San Joaquin Valley and are working with UCCE Advisor Mariano Galla in Butte county where these weeds are now established. B. Convention Herbicide Testing and Education Trials Each year new weed management products or registrations become available to growers. As part of my weed control program I have strived to educate the growers on the use and suitability of these new products, either alone or in combination, to their situation and weed control needs. Because my program has taken on statewide importance in vineyard weed control I have expanded my experiments to be applicable to more regions of California. In an effort to continue this testing and to educate the growers I have conducted four trials during this review period. After many years of conducting these trials in Napa County I expanded into Sonoma, Yolo and Sacramento Counties and UC Davis. Each of these trials is designed to provide information for field days and extension presentations that answer specific weed problems and are applicable, in most cases, to immediate grower use. C. Sustainable and Organic Weed Control in Vineyards Many growers have shown an interest in utilizing ‘sustainable’ and organic methods of weed control in their management program. In previous years I have tested organic herbicides and conducted a preliminary trial that compared weed control methods. In the fall of 2015 I started a trial comparing several weed control methods at the Hopland Research and Extension center vineyard. In this long-term study I am testing several weed control methods in one vineyard. In this replicated study the treatments are as follows: 1. A conventional contact (burn down) herbicide; 2. A popular systemic herbicide; 3. The combination of the systemic herbicide with a commonly used preemergence herbicide; 4. Cultivation; 5. The combination of cultivation and postemergence herbicides; 6. A promising organically registered herbicide plus mowing in spring; and 6. The combination of cultivation and the organic herbicide. Evaluations will be made for each treatment on efficacy of weed control and cost analysis. Another trial started in spring of 2017 looks at ‘sustainability’ in another way. The ‘explosion’ of summer grass weeds has forced many growers to make an additional spray pass through the vineyard to control weeds that have germinated with the addition of drip irrigation water. This ‘extra pass’ can add costs and greatly increase inputs in vineyards. An acre of grapes in the average California vineyard represents approximately 1.1 miles of vine row. To add some perspective, Napa and Sonoma counties together have approximately 105,000 acres of vineyards. This equates to 120,000 miles of vine row which is equivalent to a vineyard 40 rows wide that stretches from San Francisco to New York City. So keeping the number of passes through the vineyard to a minimum save both environmental and economic resources. The addition of a preemergence herbicide to the drip irrigation water would greatly reduce the need for this ‘extra pass.’ I am working with the manufacturer on application techniques and timing with the goal of reducing the PHI (pre harvest interval) to make the application more effective for growers. If successful, this could dramatically reduce the amount of herbicide used and the inputs for the growers. Outputs for Weed Control in Perennial Crops During this review period I made 27 presentations primarily on weed control in vineyards that were given in every major winegrape growing region in California, from Ukiah to Paso Robles and the Santa Cruz mountains to Lodi and the Sierra Foothills. I was primary or co-organizer of 7 meetings on



the same subject. I authored or co-authored 4 technical bulletins, one article in a grower publication, and numerous interviews for popular press articles. I am the discipline leader and lead author in an important compilation of all this work presented in the Weed Management section UCIPM Pest Management guidelines for Grapes. Data from UCIPM analytics form October of 2016 until 2017shows that we had 127,238 internet pageviews and 71,181 California-user pageviews. Impacts for Weed Control in Perennial Crops During this review period I spoke to over 2,000 attendees at extension events throughout the state. The majority of the attendees are vineyard pest management decision makers. These PCAs (pest control advisors), vineyard managers and owners use the information presented to make their weed control decisions. Every vineyard is different and the conditions in each of the regions dictates the weed control method chosen. Total amount of herbicide used or acres cultivated cannot be used to determine the impact of my program. The major impact of my program, along with my UC weed science colleagues, is that we raised the overall knowledge level of the tree and vineyard community of herbicide resistance, weed biology for timely control and alternative weed control methods for a more IPM based method of weed control. Theme 2: Calibration and Nozzle Education While teaching my clientele about effective weed control methods I found that there was an overall lack of knowledge of calibration and the proper selection of application nozzles in orchard and vineyard weed sprayers. I have expanded my program to include this very vital part of weed management. In order to continue to increase my knowledge in this subject and to extend it to the growers I have collaborated with UCCE Farm Advisors Franz Niederholzer, Lynn Wunderlich, and Professor D. Ken Giles from the UC Davis Dept. of Biological and Agricultural Engineering. Near the end of this review period principle investigators Lynn Wunderlich and Franz Niederholzer were awarded a DPR Pest Management Alliance Grant in the amount of $218,896 for their proposal ‘Training California’s pesticide applicators to reduce drift near schools.’ This projects brings together several collaborators in application technology for pesticide applications through air-blast sprayers (insecticides and fungicides) and orchard/vineyard floor weed sprayers (herbicides). I am adding my expertise on weed sprayers to this project as a collaborator. Most growers have at least a basic knowledge of proper calibration and my educational presentations helps them better understand the underlying concepts and techniques to make more accurate applications. I was invited by UCCE Advisor Margaret Lloyd to teach calibration to her Mein (Hmong) strawberry growers. With the assistance of translators, I was able to convey to them the importance of basic proper backpack sprayer calibration to ensure not only their safety but that of their commodity. Outputs for Calibration and Nozzle Education During this review period I made 17 extension presentations to varied audiences and collaborated with Lynn Wunderlich and Franz Niederholzer on a field day designed to educate UCCE advisors and other university personnel on proper nozzle selection and proper calibration. I collaborated with Dr. Bob Wolf, one of the leading application technologist in the country at the UC Davis Weed School. I also authored a feature article in the grower magazine, ‘West Coast Nut’ on proper spray nozzle selection. Impacts for Calibration and Nozzle Education The importance of proper calibration and nozzle selection cannot be overstated for proper herbicide applications. Using the wrong nozzle can lead to pesticide drift. Proper calibration reduces the chance of over, or under application of herbicides. Over application can lead to illegal residues, crop damage and environmental damage due to runoff or leaching. Under application can lead to reduced control and the need for repeated applications and can increase the rate of herbicide resistance.



The project described above- ‘Training California’s pesticide applicators to reduce drift near schools’ is important, not only because it will help reduce possible pesticide drift onto schools, but will collect information on the increase in knowledge of applicators and will use county reporting statistics to track the effect on drift incidence, providing clear impact numbers of proper calibration and nozzle selection. Theme 3: Urban Education and Master Gardener The UC Master Gardener Program Mission Statement is “To extend research-based knowledge and information on home horticulture, pest management, and sustainable landscape practices to the residents of California and be guided by our core values and strategic initiatives." It is my opinion that it is incumbent on UCCE Advisors to teach the UC Master Gardeners to properly adhere to their mission. Unfortunately, this is not an opinion shared by all of my colleagues. A vast majority of Californians live in urban or suburban communities and feel little or no connection to California’s agriculture. Well trained UC Master Gardeners will provide research-based information, either in person or through their local websites that can mitigate misleading or in some cases, illegal recommendations that are found on the internet and other sources. I have dedicated a substantial amount of time to teaching weed science principles to the UC Master Gardeners. The UC Master Gardener program is an important component of the University of California’s overall outreach mission. I conducted trainings for new Master Gardeners on weed identification, biology and management. I also have been asked to make presentations to urban audiences comprised of city staff and horticultural maintenance workers and applicators. Outputs for Urban Education and Master Gardener During this review period I conducted 22 new Master Gardener trainings in weed science. In these 3-4 hour long trainings I taught 700 new Master Gardeners about weed identification, biology and control. In addition to these trainings I taught 3 Advanced Master Gardener trainings for ‘experienced’ master gardeners to go back to their counties to teach others. I made six presentations to urban audiences. I revised the UCIPM Pest Note Dandelion (UCANR Pub. 7469) which is written for an urban audience. Impacts for Urban Education and Master Gardener The impacts of training UC Master Gardeners are multiplied by the amount of the public outreach they do. The weed science training that Master Gardeners share with their clientele can reduce the overuse of pesticides by using proper identification and biology of weeds for proper pesticide timing and by implementing alternative weed control methods. Many methods of weed control have become controversial and training applicators in urban areas in IPM techniques can favorably impact their acceptance by the public. Other Projects: Rangeland and invasive weeds During this review period I worked with the Napa County Ag Commissioners office to assist them in a strategy to control the CDFA A- listed noxious weed, rush skeletonweed (Chondrilla juncea L.) The strategy included ID, biology, chemical control and drift reduction methods to reduce off-site movement of herbicides in sensitive ecological and high valued vineyard areas. I also collaborated with UCCE Advisor David Lewis and UCCE Weed Specialist Joe DiTomaso and UC Davis Specialist in Plant Science Guy Kyser on a Calibration Field day to ranchers in Marin and Southern Sonoma County. I again collaborated with this team on a Rustici Foundation funded project titled “Development of Grazing, Integrated, and Organic Management Strategies for Noxious Thistles in Northern California Coastal Regions.” Many of the ranchers in this area produce organic cheese and finding organic methods to control this destructive invasive weed can benefit this local industry greatly. My role was to determine the most effective organic herbicide to use as part of an integrated weed control



program. The results of this project were published in the Invasive Plant Science and Management Journal. UCIPM Shortly after starting as UC Farm Advisor in Napa I became an affiliate of the UCIPM program. I have taken on several duties with UCIPM during this review period. I served for a short time as the Interim Associate Director for Agriculture for UCIPM. I serve on the Pest Management guidelines advisory committee. I coordinated the writing of a combined weed management section of the Almond, Walnut and Pistachio Pest Management guidelines (PMG) to reduce the duplication of work and streamline the review process. I also served on the selection committee for the UCIPM Communication Director. University Service University service is an important part of a well-rounded program. During this review period I served as UC Weed Workgroup Chair in 2014- 2015. I served on the successful selection committee for the Marin-Napa-Sonoma County 4-H youth advisor position. I was a member of an ad-hoc evaluation committee for advisor promotion. I served on a subcommittee for training for the upcoming UCANR Statewide conference. I served as acting County Director in Napa during the CD’s absence. The above service is necessary for the success of UCANR.

University service also can be fun. I was a ‘Weed Doctor’ representing UCCE and the UC Weed Group during UC Davis Picnic Day. I assisted, then UCANR Vice President Barbara Allen-Diaz, in hosting a tour of Napa for the Board on Agriculture Assembly Policy Board of Directors (BAAPD), 2015 Spring Meeting. I made a presentation to a Swedish delegation on my work with Spanish speaking workers. I met with a delegation of Chinese Scientists to discuss weed science. I delivered a short presentation, along with other UC Cooperative Extension Academics, to UC Davis Graduate Students relating our experiences as UCANR Advisors and Specialist. Public Service It is often difficult to determine what is considered part of my program and what can be categorized as public service. I work very closely with the Napa County Agricultural Commissioner’s office as part of my extension program. But as a service to the public I worked with the Ag Comm. office to organize and serve as moderator for a workshop on glyphosate presented to an urban audience. Herbicide use in public areas, especially schools and parks, has become controversial in Napa. I made a presentation and again in collaboration with the Ag Commissioner led a discussion for Napa County Department heads about alternatives to conventional herbicides. I twice judged the plant science competition at the Yolo County 4-H Spring Show. Professional Competence I am an active member of both the Weed and Spray Technology workgroups and Pest Management program team. I served as California Weed Science Society’s Vice-president and Program Chair of the society’s annual conference. This conference annually attracts 500 participants coming from all aspects of the ‘Weed Science’ community. CWSS membership includes University and private sector researchers, PCAs and farmers. In 2015-2016 I served as CWSS President. I am a member of the Weed Science Society of America (WSSA), Western Society of Weed Scientists (WSWS) and Aquatic Plant Management Society (APMS). I serve, along with alternate member UCCE Advisor Brenna Aegerter, on the California Director of Pesticide Regulations Pest Management Advisory Committee (PMAC). Together we represent UCCE Advisors on this board that advises the Director on funding the Pest Management Alliance and research grants. I am also a member of the California Sustainable Winegrower Association (CSWA) Pest Management Technical Advisory Group. The TAG is charged with developing a list of pesticides that the CSWA can use as part of a ‘Sustainable Certification.’ I also have guest



lectured in two college courses. I lectured in UC Davis Plant Sciences 105 class ‘Concepts in Pest Management’ relating my experience as a UCCE Farm Advisor and opportunities for the students in UCCE. I also lectured to an Organic Viticulture class at Santa Rosa Junior College on “Sustainable Weed Management in Vineyards.” Affirmative Action I am committed to assuring equal opportunity and access to my educational activities and programs. I feel that I have been successful in conducting a program in a manner that provides equitable service to all ethnic and gender groups comprising my potential clientele. My collaborations with the Napa County Agricultural Commissioner’s office have given me the opportunity to interact with and extend knowledge to a significant number of Hispanic growers. Both field trainings I conducted with UCCE Advisors Niederholzer and Wunderlich, and the ‘hands on’ portion of the ‘Spray safe’ presentation in Yuba City had a separate section with translators for Spanish speakers. As described above I had the opportunity to work with Mein (Hmong) growers twice during this review period and once with Chinese vegetable growers.

During each of our staff meetings the advisors and staff in our office discussed affirmative action issues and policies, described our recent affirmative action activities and planned for upcoming events. In addition, I abide by the university non-discrimination policy. I do not discriminate in the dissemination of materials or in any other way. The meetings that I organized were held in buildings that were accessible to handicapped individuals. I strive to ensure that accommodations are made for handicapped individuals at field days and ensure that chairs and shade are available for those who need them.

Program Review Dossier John A. Roncoroni University of California Cooperative Extension Weed Science Farm Advisor Accelerated Merit Full Title Advisor II to III Napa County 7

Professional Competence A. Professional Development and Training Professional Society Meetings Attended 2017 Organization Location Western Society of Weed Science/Western Aquatic

Plant Management Soc. Ann. Meet. Coeur d’Alene ID

California Weed Science Society Annual Meeting Monterey, CA 2016 Western Aquatic Plant Management Soc. Ann. Meet. San Diego, CA California Weed Science Society Annual Meeting Sacramento, CA 2015 Western Society of Weed Science Ann. Meeting Portland , OR California Weed Science Society Annual Meeting Santa Barbara, CA Invasive Plant Council Annual Meeting San Diego, CA

Presentations at Professional Society Meetings 2017 Presentation Organization Jan 17 ‘Sharp-point Fluvellin-The Creeping Menace’ CWSS Invited Speaker 2016 January 21 Colorado Vinicultural Association Organic Weed

Control Grand Junction, Co

January 22 Colorado Vinicultural Association Herbicides for Vineyard Weed Control

Grand Junction, Co

Professional Improvement 2015-2017 Attend UC Davis Weed Day UC Davis 2015-2016 Attend UCANR OPIC Policy on

Pesticides Meeting UC Davis

Online Trainings 2017 and 2015 UC Cyber Security Awareness Training 2016 UC Sexual Violence and Sexual Harassment Prevention

Training for Supervisors and Faculty 2015 ANR PI Award Administration and Compliance Essential

Training

Program Review Dossier John A. Roncoroni University of California Cooperative Extension Weed Science Farm Advisor Accelerated Merit Full Title Advisor II to III Napa County 8

Professional Society Memberships • Western Society of Weed Scientists 2007-present • Weed Science Society of America 2008-present • California Association of Pest Control Advisors 1998-present • Aquatic Plant Management Society 2011-Present

Certifications California Department of Pesticide Regulations: Qualified Applicator Certificate #106321. This certification is required by state law for anyone making applications of restricted or experimental chemicals. California Department of Pesticide Regulation: Pest Control Advisors License #075211. This license is required by state law for anyone making pest control recommendations. B. Evidence of Professional Competence Professional Society Appointments 2016-17 Calif. Weed Science Society Prof

Society Past President-Chair Nominations

2015-16 Calif. Weed Science Society

Prof Society

President

2014-15 Calif. Weed Science Society

Prof Society

Vice President-Program Chair

Industry/State Advisory Boards Appointments

2017 California Sustainable Winegrape growers Technical Advisory Group

2017 California Department of Pesticide Regulation Pest Management Advisory Committee Other

• Guest Instructor UC Davis IPM Class, 2015, 2016, 2017 • Guest Instructor Santa Rosa JC Class 2016, 2017

University and Public Service

Program Review Dossier John A. Roncoroni University of California Cooperative Extension Weed Science Farm Advisor Merit Full Title Advisor II to III Napa County

9

University Service Date Activity Organizational Level My Role Level of

Significance 2017 2017-present UCANR Statewide Conf. training workshops Division Member State March 22 Ad-Hoc committee Division Member State 2016 October 27 Met with visiting Chinese Scientist Division Speaker International May 26 Represented UCCE Advisors to Graduate Students Division Speaker State April 16 ‘Weed Doctor’ UC Davis Picnic Day UC Davis Demonstration State October 2014 -February 2016

Weed Science Workgroup Chair. Division Chair State

2015 April28 Selection Committee for Youth Advisor Division Member Multi-County/State April 18 ‘Weed Doctor’ UC Davis Picnic Day UC Davis Demonstration State April 1 Host tour for BAAPD and UCANR VP Local Host National February 9 Met with visiting Swedish Scientist Division Speaker International Public Service Date Activity Organizational Level My Role Level of

Significance 2017 May 31 Workshop on ‘Roundup’ with Napa Ag

Commissioner for Urban audience County Co-organizer County

May 5 Yolo County 4-H- Plant Science County Judge County 2016 March 1 Met with Napa County dept. heads to discuss weed

control alternatives County Co-organizer County

2015 May 6 Contra Costa Co. IPM Advisory Board County Speaker County April 28 Yolo County 4-H- Plant Science County Judge County

Program Review Dossier University of California Cooperative Extension Accelerated Merit Full Title Advisor II to III

John A. Roncoroni Weed Science Farm Advisor

Napa County

Bibliography

Publication Summary: A = Popular articles, newsletter stories, UC Delivers – 18 (2) B = Peer-reviewed scholarly journals – 3 (1) C = Other peer-reviewed articles, publications – 10 (2) D = Technical reports or articles – 6 (4) E = Abstracts – 3 (0) (#) number during this review period,

A Roncoroni, J.A (2017) “Selecting Spray nozzles for Orchard Herbicide Sprayers”

West Coast Nut, JMS Marketing, October 2017 Issue C Roncoroni, J.A. UCIPM Pest Note Dandelion (2018) (revision) UC ANR

Publication 7469 (published on-line January 2018) D Brunharo, Caio A.; Roncoroni, John, et al. (2017). Performance of glufosinate-

ammonium formulations in California perennial crops. 2017 WSWS Research Progress Report.

D Roncoroni, J.A. C. Brunharo, B. D. Hanson (2017) Controlling Herbicide Resistant

Italian Ryegrass UCCE Sonoma County Grape Day February 8, 2017 D Roncoroni, J.A.and B. D. Hanson (2017) Controlling Sharppoint Fluvellin, UCCE

Sonoma County Grape Day February 8, 2017 B DiTomaso, Joseph M.; G. B. Kyser, J. Lewis and J. A. Roncoroni (2017).

"Conventional and Organic Options for the Control of Woolly Distaff Thistle (Carthamus lanatus)." Invasive Plant Science and Management Volume 10, Issue 1: pp. 72-79. Published online: 20 March 2017

D Hanson, B.D., J. A. Roncoroni, K.J. Hembree, R. Molinar, C.L. Elmore Weed

Control in Orchards and Vineyards. Encyclopedia of Applied Plant Sciences. In Brian Thomas. Waltham, MA: Academic Press, 2017. 3: 479–484.

C Roncoroni, J. A., K. J. Hembree, C. A. Ingels, UC IPM Pest Management

Guidelines: Grape (Weeds) UC ANR Publication 3448 revision July 2015 A Roncoroni, John A. (2016). Fall Weed Management Considerations for Growers.

American Vineyard. Malcolm Media. 25: 12-13. B Hanson, Brad, Steve Wright, Lynn Sosnoskie, Albert Fisher, Marie Jasieniuk, John

Roncoroni, Kurt Hembree, Steve Orloff, Anil Shrestha and Kassim Al-



Napa County

Khatib.CalAg-0104: Special issue on endemic/invasive pests and diseases: “Herbicide- resistant weeds challenge some signature California cropping systems.” (2014)

A Roncoroni, John and Cheryl Wilen, “Managing Weeds Under Drought Conditions”

UCIPM Green Bulletin, Vol. 4 No. 3 August 2014 pgs. 1-2. * C Ingels, Chuck and John Roncoroni (2014). "Weed Control in Dune Sedge

Transplants." HortTechnology 24(2): 166-170*.

A Roncoroni, J.A. 2014. Weed Control under drought conditions. Newsletter article, Grower Advocate, Napa County Farm Bureau, Summer 2014 issue. *

A Sparks, Brian, John Roncoroni and Rachel Elkins, ‘Orchard Floor Management in

Organic Pears’ American/Western Fruit Grower February 2014. Rewritten from Roncoroni, John and Rachel Elkins Orchard Floor Management in North Coast Organic Pear Orchards research report for California Pear Advisory Board 2013.

E Roncoroni, J.A. “Weeds of Irrigation Ponds in California’s Wine Country”

Abstract, 2014 Western Aquatic Plant Management Society Annual Meeting, Reno Nevada

A Roncoroni, J.A. 2013. Stinkwort. Newsletter article, Grower Advocate, Napa County

Farm Bureau, Fall 2013 issue. C Hanson, B.D., J. A. Roncoroni, K. Hembree, R. Molinar, and C.L Elmore “Tree,

Vine, and Soft-Fruit Crops” Chapter in “Principles of Weed Control, 4th Edition” California Society of Weed Science. Steven A. Fennimore and Carl Bell editors. 2014

C DiTomaso, J M., G. B. Kyser, S. R. Oneto, R. G. Wilson, S. B. Orloff, L. W.

Anderson, S. D. Wright, J.A. Roncoroni, T. L. Miller, T. S. Prather, C. Ransom, K. G. Beck, C. Duncan, K. Wilson, J. J. Mann. Weed Control in Natural Areas in the

Western United States. University of California Weed Research and Information Center 2013

C DiTomaso, J M, J. A. Roncoroni, S. V. Swain and S. D. Wright. Poison Hemlock

Integrated Pest management for Land Managers. UCIPM Pest Note, UCANR Publication 74162. 2013.

C Elkins, R. B., J.A Roncoroni, C.A. Ingels, B. Hanson, 2012 (updated) Weeds section in UC IPM Pest Management Guidelines: Pears UC ANR Publication 3340

D Abit, J.M., J. A. Roncoroni, C. DeBuse, and B.D. Hanson, Walnut and Almond



Napa County

Residual Herbicide comparison. WSSA Research Progress report. Western Society of Weed Science, pg 24-26, 2012

A Roncoroni, J.A. 2011. Weed Control Update. Newsletter article, Grower Advocate, Napa County Farm Bureau, Fall 2011 issue. A Roncoroni, J.A and W.T Lanini,”Organic Herbicides”, CAPCA Advisor magazine,

California Association of Pest Control Advisors, December, 2010 issue A Roncoroni, J.A. 2010. What’s That Weed? RoundUp Resistant Weeds

Newsletter article, Grower Advocate, Napa County Farm Bureau, Fall 2010 issue.

C Roncoroni, J.A., S.D. Wright, 2010 (updated) Weeds section in UC IPM Pest Management Guidelines: Nectarine UC ANR Publication 3451

C Roncoroni, J.A., S.D. Wright, 2010 (updated) Weeds section in UC IPM Pest Management Guidelines: Peach UC ANR Publication 3454.

A Roncoroni, J.A., 2010. What’s That Weed? Azolla-Mosquitofern Newsletter

article, Grower Advocate, Napa County Farm Bureau, Spring 2010 issue.*

E Roncoroni, J.A.,”Control of Tall Annual Willowherb [Epilobium brachycarpum C.Presl] in Vineyards of California’s Napa and Russian River Valleys” Invited Abstract and Poster, 2010 Pan-American Weed Resistance Conference, Miami FL.

E Lanini, W.T., S. Capps and J.A. Roncoroni, “Field Testing of Organic Herbicides.”

Abstract and Poster, 2010 Western Society of Weed Scientists Annual Meeting Waikoloa, Hawaii.

D Roncoroni, J., 2010 “Herbicide Resistant Weeds in California Vineyards. Are they

inevitable?” 58th Annual Lodi Grape Day Report. B Úrbez-Torres, J.R., Battany, M., Bettiga, L.J., Gispert, C., McGourty, G.,

Roncoroni, J., Smith, R.J., Verdegaal, P., and Gubler, W.D. 2010. Botryosphaeriaceae species spore-trapping studies in California vineyards.

Plant Dis. 94:717-724. A Roncoroni, J.A. 2009. What’s That Weed? Starthistle Newsletter article, Grower

Advocate, Napa County Farm Bureau, Fall 2009 issue. C Roncoroni, J.A., 2009 (updated). Weeds section In: UC IPM Pest Management

Guidelines: Cherry UC ANR Publication 3440 A Roncoroni, J.A., 2009. What’s That Weed? Mustard Newsletter article, Grower

Advocate, Napa County Farm Bureau, Spring 2009 issue. A Roncoroni, J.A., 2009. What’s That Weed? Biology and Control of Water Primrose

Ludwigia Newsletter article, Grower Advocate, Napa County Farm Bureau, Fall 2009



Napa County

issue. A Roncoroni, J.A., 2008. The View from Below the Vine. Newsletter article. Vineyard

Views, April 2008 issue. Reprinted as Roncoroni, J.A., 2008. Multitude of factors determine success and potency of weed control. Popular article. Western Farm Press, volume 30, number 14, June 7, 2008

A Roncoroni, J.A., 2008. What’s That Weed? Field Bindweed Biology and Control.

Newsletter article, Grower Advocate, Napa County Farm Bureau, Summer 2008 issue.

A Roncoroni, J.A., 2008. What’s That Weed? Willowherb Biology and Control.

Newsletter article, Grower Advocate, Napa County Farm Bureau, Spring 2008 issue.

A Roncoroni, J.A., 2008. What’s That Weed? Sharppoint Fluvellin Biology and Control. Newsletter article, Grower Advocate, Napa County Farm Bureau, Fall 2007 issue

B Steinmaus S, Elmore C.L., Smith R.J., Donaldson D., Weber E.A., Roncoroni J.A., Miller P.R.M., 2008. Mulched covercrops as an alternative to conventional weed Management systems in vineyards. Weed Research 48, pgs 273-281

A Roncoroni, J.A., 2007. Herbicide Resistance Weeds in Napa? Newsletter article.Vineyard Views, May 2007 issue.

Program Review Dossier 14 John A. Roncoroni University of California Cooperative Extension Weed Science Farm Advisor Merit Full Title Advisor II to III Napa County

PROJECT SUMMARY TABLE

Project Title and Duration My Role Cooperators My Funding Total Funding 1.Weed Control in Perennial Crops A. Herbicide Resistant Weeds Evolutionary Changes In Ryegrass Populations Since Detection Of Glyphosate Resistance And Communication Of Resistance Management Strategies January 2015- December 2017

Cooperator Dr. Marie Jasieniuk and Dr. Brad Hanson,UC Davis, Dr. Carol Mallory-Smith, Oregon State University and Dr. Todd Gaines, Colorado State University

$0 ($425,000 total award) USDA-NIFA-AFRI

Mechanisms, distribution and invasion potential of glyphosate-resistant junglerice, and other summer grass weeds in California tree and vine cropping systems October 2013-June 2016

Co-PI UCCE Weed Specialist Brad Hanson and UCCE Advisors Steve Wright and Kurt Hembree

Travel reimbursement only

$61,297 total award CDFA Specialty Crop Block Grant Program)

Control of Herbicide Resistant Ryegrass in Vineyards 2016

PI Collaborated with Dr. Brad Hanson and Ph.D. candidate Caio Brunharo

$71,000* Unrestricted grants (Various donor)

B. Conventional Weed Control Vineyard Herbicide Trials PI - Unrestricted grants (Various

donor) C. Sustainable and Organic Weed Control in Vineyards Weed control using chemigation (herbicide applied through drip irrigation to control late season grass weeds.

PI - Unrestricted grants (Various donor)

Optimizing Undervine Weed Control 2016-2019

PI Glenn McGourty UCCE $6,619 HREC allocation

Hopland REC UCIPM support $5000/Year

‘* Total unrestricted funds received during this review period


Extension Activities Meeting Organized October 1, 2014- September 30, 2017 Date Meeting Name Topic Role Location Attend 2017 August 22-24 UCDavis Weed School Weed Ed Short course Co-Organizer-Calibration

section UC Davis 60

July 13 UCDavis Weed Day Weed Control in Vineyard Researcher/Field Presenter UCDavis 150 July 11-12 UC Davis Herbicide

Symptomology Short Course Herbicide Symptomology Co-Organizer UC Davis 60

May 5 Vineyard Floor Management/Soil Health Field Day

Undervine Weed Control Researcher/Field Presenter Hopland REC 30

2016 November15 Calibration Training Nozzles and Calibration Co-Organizer with UCCE

Advisors Lynn Wunderlich and Franz Niederholzer

UCDavis 15

2015 July 21 2015 Herbicide Trial Field

Day Discussion of herbicide field trials

Research, Organize and Present

Isleton 50

June 30 2015 Herbicide Trial Field

Day Discussion of herbicide field trials

Research, Organize and Present

Woodland 40

June 11 Hedgerow Field Day Establishing Hedgerows in Vineyards and Field Tour

Co-Organizer Oakville Res. Sta. 30

June 3 Napa Vit Tech and UCDavis dept. of Viticulture Field Day

Field Research Reports and demonstrations

Co-organizer and Presenter Oakville Res. St. 200

January 14 Napa Vit Tech Grape Diseases Moderator Napa 100 2014 November 5 Napa Vit Tech Weed Control in

Vineyards Organizer Napa 72


Extension Activities Educational Presentations: October 1, 2014- September 30, 2017(Organized by Research/Extension Theme) Weed Management in Perennial Crops Date Meeting Name Presentation Location Attend. 2017

May 17 UCCE Stanislaus County Managing Herbicide Resistant Weeds Modesto 25 March 2 Ag Unlimited: Grower Update-Napa Weed Control Update: Fluvellin, Ryegrass

and other weeds in North Coast Vineyards Napa 100

February 28 ’On the Road in Lodi, Focus on Virus and Disease' UC Davis Dept. of Viticulture and Enology

Are Herbicides Effective in Controlling Grapevine Roots?

Lodi 125

February 8 Sonoma Grape Day. UCCE Sonoma County Weed Control Update: Fluvellin, Ryegrass and other weeds in North Coast Vineyards

Santa Rosa 175

2016 December 7 Napa Valley Viticulture Technical Group-

Monthly Meeting Weed Management in Grapes Napa 75

December 6 Paso Robles Wine Country Alliance- Monthly Technical Meeting

Weed Management in Grapes Paso Robles 30

December 16 2016 E&J Gallo Winery Herbicide Update Meeting

Glyphosate: Use it or Lose it-Making it Work and Working Without it.

Lodi 125

November 30 CAPCA/OFAC Sustainable/Organic production in Vineyards Weed Control in Organic Systems

Cloverdale 100

November 17 Grower Update- Bayer CropScience Weed Management in Grapes Monterey 85 October 25 Napa Farm Bureau, Napa Ag

Commissioner's office and Napa UCCE Sustainable Weed Management Napa 1 150 Napa 150


Date Meeting Name Presentation Location Attend. July 12 Grower sustainable training- California

Sustainable Winegrowers association Sustainable weed Control Upper Lake 30

June 1 Grower Update Santa Cruz Mountain Grape Growers

Vineyard Weed Control Santa Cruz 40

April 1 Calaveras Grape growers group Sustainable Vineyard Weed Management Murphy's CA 30 March 31 Grower update UCCE mariposa county Vineyard weed control Mariposa 15 March 2 Clarksburg Grape Day, Clarksburg Grape

growers Association Vineyard Weed control Clarksburg, 30

2015 December 16 CAPCA/OFAC Update Organic Weed Control in vineyards Calistoga 80 November 19 Sonoma Grape Expo- American Vineyard

Magazine vineyard weed management Cloverdale 70

November 18 CAPCA Napa Update Vineyard Weed Management Napa 60 November 4 CAPCA Update Sacramento Vineyard Weed Control Sacramento 80 October 27 Napa Farm Bureau and Napa Ag Comm. Weed Management under drought conditions Yountville 75 July 25 Napa PAPA seminar Vineyard Weed Control Napa 100 April 21 Lodi meeting California Assoc. of Pest

Control Advisor Controlling Problem Weeds Lodi 50

March 3 Monthly Grapegrower Meeting- Paso Robles Wine Country Association

Controlling Problem Weeds Paso Robles 35

February 6 Grower Meeting sponsored by Wilbur-Ellis and Bayer Corp.

Weed Control- Take Home message Half Moon Bay 50

February 3 Tree Nut meeting sponsored by Bayer Corp. Weed control in perennial weeds Chico 90 2014 November 6 Napa meeting California Assoc. of Pest

Control Advisors Weed Control Update Napa 70

October 20 Annual Meeting California Assoc. of Pest Control Advisors

Herbicide Resistant weeds Anaheim 75


Calibration and Nozzle Education Date Meeting Presentation Location Attend 2017 June 11 UCCE Santa Clara County Chinese vegetable grower meeting Proper

Nozzles and sprayer calibration San Martin 45

April 3 Pest Control Employee Training-City of Davis

Nozzles and proper sprayer calibration Davis 20

March 31 BASF Corporation- Grower Update Orchard and Vineyard Weed Control and

calibration Modesto 40

March 30 BASF Corporation- Grower Update Orchard and Vineyard Weed Control and calibration

Chico 65

February 6 Association of Applied IPM Ecologist Annual Meeting

Spray session Spray Nozzles Napa 15

February 21 Annual Strawberry meeting (Mein growers) UCCE Sacramento, Solano, Yolo Counties

Proper Nozzles and sprayer calibration Sacramento

Sacramento 40

February 1 Spray Safe 8Th Annual Meeting Yolo County Department of Agriculture and the Yolo County Farm Bureau

Factors that Affect Herbicide Performance: Application, Timing and Resistance

Woodland 250

2016 September 28 CAPCA- Chico Update Proper nozzle selection and applications Chico 100 June 23 CAPCA- Sacramento Update Proper nozzle selection and applications Sacramento 75 June 22 CAPCA- Modesto Update Proper nozzle selection and applications Modesto 80 March 16 Annual Strawberry meeting (Mein growers)

UCCE Sacramento, Solano, Yolo Counties Proper Nozzles and sprayer calibration Sacramento

Sacramento 40

February 4 SpraySafe, CAPCA, Yolo Ag Comm. office Herbicide applications and nozzles Woodland 400 2015 September 22 UC Spray Application Training, Bio. and

Ag. Engineering, UCD Hydraulic nozzles: Standard and low drift nozzle options. Spray table demonstration.

UC Davis 60

February 13 Rangeland Weed Control Field Day- Marin/Sonoma UCCE

Rangeland Calibration Sonoma County

10


Date Meeting Name Presentation Location Attend. February 5 Spray Safe- Yolo County Ag Comm. office Basics of Strip Spraying in orchards Woodland 150 January 27 Spray Safe- Yuba/Sutter UCCE and Sutter

County Ag Comm. office Basics of Strip Spraying in orchards Yuba City 100

2014 November 12 Calibration Field Day- Yuba/Sutter UCCE Calibration of field herbicide sprayer- OC

nozzles Yuba City, Arbuckle

60

Urban Education 2017 August 29 Napa PAPA seminar Sustainable Weed Control Practices for Urban

Landscapes Napa 235

May 16 Sonoma County Regional Parks-Landscape Pest Control Seminar

Weed Identification and Control in Landscapes

Santa Rosa 200

April 7 City of San Jose Chemical Advisory Board Weed Control using Alternatives to Conventional Herbicides

San Jose 25

January 26 CAPCA Tracy The How's and Whys to Weed Control Tracy 80 2016 October 27 City of Davis 26th Annual Horticulture Pest

Control Seminar Weed Control using Alternative to Conventional Herbicides

Davis 30

2015 April 27 Landscape Pesticide Applicators Seminar;

Sonoma County Regional Parks Weed Control in Landscapes and Parklands Santa Rosa 150

Other Presentations 2017 September 20 Hot Topics in Integrated Weed Management

UCCE Mariposa Co and Ag Comm. Identification and Biology of Aquatic Weeds Catheys Valley 45

2016 December 15 Siskiyou Pest Management Seminar-

Siskiyou UCCE and Ag. Comm. Sustainable Weed Control Yreka

150


Master Gardener

2017 Weed Science Training for New Members

Counties: Contra Costa; Marin; Napa; Yuba; Sonoma; Santa Clara; Marin.

2016 Weed Science Training for New Members Counties: Napa; Lake; Glenn; Yolo; Solano; Mendocino; Butte; Marin.

2015 Weed Science Training for New Members Counties: Contra Costa; Napa; Mendocino; Marin; Solano; Santa Clara; Yolo.

Advanced Master Gardener IPM Training 2016 Advanced Weed Science Training for Master Gardeners Locations: Stockton; Moraga; Chico.

AE Section C: Goals for Coming Year: September 2017-October 2018

Program Review Dossier John A. Roncoroni University of California Cooperative Extension Weed Science Farm Advisor Merit Full Title Advisor II to III 22 Napa County

I have made no secret of the fact that after a 38-year career with the University of California it is my intention to retire in June of 2020. This fact more than any other shapes my goals for not only this year, but for the remainder of my career. 1. Leadership and mentoring. I will continue in a leadership role within pest management, but as the year continues I will encourage newer Advisors to take on more of this role. I will seek to mentor newer Advisors either in an official or informal manner. 2. Trial Work I have already started projects for this year. Herbicide testing, multi-method weed control at Hopland REC and efficacy of herbicides through drip irrigation. 3. University Service I intend to assist wherever I can to the success of UCANR, without taking opportunities for this from newer Advisors. 4. Clientele I have been working with UCCE Cooperative Extension Weed Specialist Dr. Brad Hanson and UCCE Advisor Dr. Mariano Galla to ensure that my clientele, in Napa and throughout the state will be ‘covered’ when I leave. I will ensure that my colleagues understand the nuance of weed control in premium grapes, and that my clientele are familiar with these weed science specialists. I will also assist where I can to ensure that Napa County will have the UCANR presence that they deserve. 5. Write I, like all Advisors, have data and projects that have been ‘shelved ‘due to higher priority projects. I intend to devote more time to summarizing and publishing this information in some form so it is not lost.

POSITION DESCRIPTION

John RoncoroniWeed Science Farm Advisor

Napa County

NATURE AND PURPOSE

The Weed Science Farm Advisor conducts extension education and problem-solving researchprograms in vegetation management in perennial crop production. Programs include covercropping, and conventional, organic, and sustainable weed control. The advisor identifies anddescribes local vegetation management issues and develops, or seeks out, the appropriateeducational and research resources towards their resolution. Support is given to a wide range ofclientele, including conventional and organic growers, pest control advisors, small farm andfamily operations. As an Affiliate Weed Advisor in the UC 1PM program, expertise andguidance will also be provided on a regional basis to the grower community, UCCE Advisors,and other governmental agencies on vegetation management and weed control issues includingriparian plant communities, aquatic and invasive species, and integrated pest management. Theadvisor will act in an advisory role to extend weed science knowledge through the MasterGardener program to homeowners throughout the region.

MAJOR RESPONSIBILITES

The Weed Science Farm Advisor is responsible for extending knowledge and information in allaspects of vegetation management, engaging in applied research and creative activity, and fordemonstrating professional competence and activity and for performing University and publicservice. Specifically:

• Research Evaluate existing information and develop new protocols for vegetationmanagement in perennial crop production by conducting problem-solving fieldresearch, independently and in cooperation with local growers, Pest Control Advisors,Extension Specialists, University-based researchers and Farm Advisors. Researchtopics include integrated pest management, cover crop utilization, aquatic andterrestrial invasive plant species and other pertinent weed science issues. Researchresults are made available to clientele through appropriate publications.

• Extending Information-Design, develop and implement a county and regional extensionprogram relating to the needs of local growers, PCA’s, Farm Advisors, and otherinterested agencies as appropriate within the region. Information will be disseminatedthrough a variety of educational methods including newsletters, publications, meetings,personal contacts, through the Master Gardener program and other appropriate means.

• Professional Development-Develop and carry out an active plan for professionalgrowth. Maintain professional competence by attending and participating inprofessional societies, committees, and program-related training provided by theUniversity and others.

EQUAL OPPORTUNITY

1. Complies with all applicable federal and state laws and regulations and all Universitypolicies regarding affirmative action and equal opportunity, including prohibition ofdiscrimination on the basis of race, color, national origin, religion, sex, physical ormental disability, medical condition (cancer-related or genetic characteristics), ancestry,marital status, age, sexual orientation, citizenship, or status as a covered veteran(special disabled veteran, Vietnam-era veteran or any other veteran who served onactive duty during a war or in a campaign or expedition for which a campaign badgehas been authorized).

2. Takes all measures necessary to ensure that any employees or volunteer workerssupervised by this position fulfill their nondiscrimination responsibilities.

3. Plans and conducts programs in such a manner as to provide equitable service to allethnic and gender groups that comprise the potential clientele population for theprograms.

4. Identifies any barriers to clientele participation related to ethnicity, gender, or othercharacteristic of concern under the University’s nondiscrimination policies, and takescorrective action to remove such barriers.

5. Collects, and keeps current, demographic data identifying the ethnic and genderdistribution of the potential clientele population for the program.

6. Compiles and maintains documentation of service to each ethnic and gender groupwithin the clientele population served by the program, including statistical records ofclientele contacts, quantitative and qualitative evaluations of benefit realized byclientele, and reports of any special efforts to serve underrepresented groups.

RELATIONSHIPS

Supervised by and reports to the County Director. Maintains communication and a workingrelationship with CE specialist, Experimental Station and other University based personnel andcoworkers, the UC 1PM program and Napa County Agricultural Commissioner’s office.Develop and maintain relationships with Farm advisors throughout the region and withcommodity and support groups such as the Napa Valley Grape Growers Association and theNapa Valley Vineyard Technical Group and with other grower associations and pest controlprofessionals.

APPROV

Advisor: Date: /////)o7

County Director: Date: V’ 2OO’

Regional Director: Date:

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