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Cover for California Agriculture Journal: July–September 2020. Issue 74-03 California AgricultureJuly–September 2020 | Volume 74 Number 3 Revisiting peach and nectarine marketing orders p155 Predatory mites in California crops p129 Agricultural managed aquifer recharge and water quality p144 Prospects for disease resistant strawberry cultivars p138 Controlling brown spot in table grapes p163 Monterey pine forest recovery p169 Agritourism p123 University of California | Peer-reviewed Research and News in Agricultural, Natural and Human Resources Indexing. The journal provides article metadata to California Agriculture major indexing services, including Thomson (Web of Sci- Peer-reviewed research and news published by ence), AGRICOLA, the Directory of Open Access Journals University of California Agriculture and Natural Resources and EBSCO (Academic Search Complete), and has high visibility on Google Scholar. All articles are posted to Director of Publishing, Executive Editor: Jim Downing eScholarship, UC’s open-access repository. In the 2018 Managing Editor: Deborah Thompson Thomson JCR, the journal’s impact factor was 1.44. Senior Editor: Hazel White Senior Writer and Editor: Lucien Crowder Authors. Most authors (75%) are among the roughly Art Director: Will Suckow 1,000 academics affiliated with UC ANR, including UC Cooperative Extension specialists, advisors and academic ASSOCIATE EDITORS coordinators; and faculty in the following UC colleges: Animal, Avian, Aquaculture & Veterinary Sciences: UC Berkeley College of Natural Resources, UC Davis Col- John Angelos, Maurice Pitesky lege of Agriculture and Environmental Sciences, UC Davis Economics & Public Policy: Rachael Goodhue, Julie Guthman, School of Veterinary Medicine, and UC Riverside College Mark Lubell, Kurt Schwabe of Natural and Agricultural Sciences. Submissions are Food & Nutrition: Amy Block Joy, Lorrene Ritchie welcome from researchers based at government agencies Human & Community Development: Rob Bennaton, and at other campuses and research institutes. Martin Smith Article submission and review. Guidelines for au- Land, Air & Water Sciences: Hoori Ajami, Khaled Bali, Yufang Jin, Sanjai Parikh thors are here: calag.ucanr.edu/submitarticles/. The jour- Natural Resources: Ted Grantham, William C. Stewart nal uses a double-blind peer-review process described at Pest Management: Kent Daane, calag.ucanr.edu/About/. Roughly 50% of all submissions James Stapleton, Florent Trouillas are rejected by the editors without peer review due to a It is the policy of the Plant Sciences and Agronomy: Daniel Geisseler, mismatch with the journal’s scope or clear weaknesses University of California Matthew Gilbert, Stephen Kaffka, Astrid Volder (UC) and the UC Division in the research. 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To request permission to reprint a photograph pub- reviewed research journal. It has been published continu- lished in California Agriculture, please complete the UC ously since 1946 by University of California Agriculture ANR Permissions Request Form (http://ucanr.edu/survey/ and Natural Resources (UC ANR). There are about 10,000 survey.cfm?surveynumber=5147). In general, photos may print subscribers. be reprinted for non-commercial purposes. Mission and audience. California Agriculture pub- lishes original research and news in a form accessible to an educated but non-specialist audience. In the last read- ership survey, 33% of subscribers worked in agriculture, 31% were university faculty or research scientists and 19% Editor’s note: California worked in government. Agriculture is printed on Electronic version of record. In July 2011, the elec- paper certified by the Forest Stewardship Council® as tronic journal (calag.ucanr.edu) became the version of sourced from well-managed forests, with 10% recycled record. Since then, some research article are published postconsumer waste and no online only. All articles published since 1946 are freely elemental chlorine. See www. fsc.org for more information. available in the online archive, calag.ucanr.edu/Archive/. 114 CALIFORNIA AGRICULTURE • VOLUME 74, NUMBER 3 Contents JULY–SEPTEMBER 2020 • VOLUME 74, NUMBER 3 News and opinion CONVERSATION 116 Q-and-A: COVID-19’s effects on food systems, youth development programs and nutrition Carlos H. Crisosto Carlos by Lucien Crowder An interview with UC Cooperative Extension experts about the effect of the coronavirus Research and review articles pandemic on food systems, youth development and nutrition. 129 Surveys of 12 California crops for phytoseiid predatory mites show changes compared to earlier studies NEWS by Elizabeth E. Grafton-Cardwell, Walter Bentley, Mary Bianchi, Frances E. Cave, Rachel Elkins, Larry Godfrey, Ping Gu, David Haviland, David 119 Research highlights Headrick, Mark Hoddle, James McMurtry, Maria Murrietta, Nicholas Mills, by Lucien Crowder Yuling Ouyang, Carolyn Pickel, Stephanie Rill, Menelaos C. Stavrinides and Recent articles from the Agricultural Lucia G. Varela Experiment Station campuses and UC ANR’s In phytoseiid samples from 25 counties from 2000 to 2018, the western county offices, institutes and research and predatory mite, long recognized as an important biological control agent, was extension centers. found in relatively low numbers. 138 Strawberry growers are unlikely to forgo soil fumigation with OUTLOOK disease-resistant cultivars alone 123 California’s agritourism operations by Julie Guthman expand despite facing regulatory A UC survey found that disease resistant cultivars have not yet become a challenges priority for strawberry growers, mainly because of economic pressures. by Shermain Hardesty and Penny Leff 144 Agricultural managed aquifer recharge — water quality factors Surveys show that agritourism operators in to consider California need increased support from their by Hannah Waterhouse, Sandra Bachand, Daniel Mountjoy, Joseph Choperena, local governments and the state regarding Philip A.M. Bachand, Helen E. Dahlke and William R. Horwath regulatory requirements. AgMAR could counteract groundwater overdraft, yet impacts to water quality must be considered — current growing season N management and LETTER historical legacy nitrate in the subsurface need to be taken into account. 127 Complexity in 4-H youth enrollment: A 155 Terminated marketing order provided resources to California response to Davy et al. (2020) peach and nectarine growers by Steven Worker by Zoë Plakias, Rachael Goodhue and Jeffrey Williams The authors found that industry information provided via marketing orders was a significant factor for respondents who voted to continue the orders. 163 Brown spot in table grape Redglobe controlled in study with sulfur dioxide and temperature treatments by Cassandra A. Young, Robin A. Choudhury, Carlos H. Crisosto and W. Douglas Gubler A popular export table grape variety showed no disease development for 32 days at 2°C after being treated with 200 ppm-h SO2. 169 Monterey pine forest made a remarkable recovery from pitch canker by Thomas R. Gordon, Gregory J. Reynolds, Sharon C. Kirkpatrick, Andrew J. Storer, David L. Wood, Daniel M. Fernandez and Brice A. McPherson For 3 years pitch canker progressed rapidly through native stands on the COVER: At R&D Farms in Reedley, Calif., nectarines Monterey Peninsula, then changed little over 14 years, before steadily and peaches are picked in buckets to protect fruit declining. during handling just before transfer to the packing line for cleaning, sanitation, sorting, sizing and packing. Photo by Carlos H. Crisosto. http://calag.ucanr.edu • JULY–SEPTEMBER 2020 115 CONVERSATION Q-and-A: COVID-19’s effects on food systems, youth development programs and nutrition An interview
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