The California and Arizona departments of agriculture received funding for four citrus-related projects from the U.S. Department of Agriculture’s (USDA) Agricultural Marketing Service (AMS) for 2023. Nationwide, USDA AMS allocated $72.9 million in Specialty Crop Block Grant Program funding. DROUGHT-TOLERANT VARIETIESThe California Department of Food and Agriculture (CDFA) received $499,921 for designing drought-tolerant specialty crops using metabolic modeling. The University …
First Tau Fruit Fly Quarantine in Western Hemisphere
A portion of Los Angeles County has been placed under quarantine for the Tau fruit fly (Zeugodacus tau group) following the detection of more than 20 flies in the unincorporated area of Stevenson Ranch, near the city of Santa Clarita. The fly has a very wide host range, including numerous citrus varieties as well as a select range of native …
California Lemon Rootstock Research Reported
Researcher Glenn Wright recently reported how various rootstocks for lemon trees producing fresh market fruit compared for yield and other qualities in three California locations with different climates. Wright is a University of Arizona associate professor and Extension specialist for tree crops. SANTA PAULASanta Paula’s warm summer Mediterranean-like climate had the following results: LINDCOVEResearch in Lindcove, a hot summer Mediterranean-like …
Lemon Scion Research Summarized
An assortment of lemon scions producing fresh market fruit performed differently for yield and other qualities in three California locations. Glenn Wright, University of Arizona associate professor and Extension specialist for tree crops, provided the comparative results from the three locations in a June 20 webinar. All results are through the 2020–21 season. SANTA PAULAThe Santa Paula location, with a …
Update on Sweet Orange Scab in California
A California researcher recently provided an update on sweet orange scab (SOS). The fungal disease has been detected in the state 18 times since 2013. University of California, Riverside professor and plant pathologist Jim Adaskaveg said most of the detections have been in Southern California, especially in Imperial County. Eleven detections have been in commercial lemon orchards, three in commercial …
Update on Fungicides for Citrus
In a recent webinar, Jim Adaskaveg, University of California, Riverside professor and plant pathologist, discussed some recently registered fungicides to manage phytophthora and other fungal diseases of citrus. Orondis was registered in 2018, Presidio in 2019 and Revus in 2020. Adaskaveg said Orondis and Revus each contain a new active ingredient with a different mode of action and provide a …
Federal Funding for Citrus Includes Boost for Breeding
California Citrus Mutual (CCM) in mid-June welcomed congressional support for critical federal citrus programs. The programs being supported include the Citrus Health Response Program, the HLB Multi-Agency Coordination Group and an additional $1 million in federal funding for a new citrus breeding program. The House Appropriations Committee has included additional funding for citrus breeding research. The research is intended to …
No Perfect Tree Spacing for Multiple Objectives
Looking for the perfect tree planting density to meet all of your objectives for citrus fruit quality and yield? That may not be possible, University of California Cooperative Extension’s Craig Kallsen said in a recent talk about planting density’s impact on navel orange yield and quality. The citrus and pistachio farm advisor for Kern County gave the example of a …
HLB in Florida Is a Warning to California
The damage that HLB has inflicted on Florida citrus groves and production over the past 18 years should serve as a warning for California producers, California’s Citrus Pest & Disease Prevention Program (CPDPP) stated recently. CPDPP noted that with HLB detected in thousands of California residential trees, it’s important for commercial growers to take steps to prevent the disease. According …
Managing Citrus Thrips in California
In California’s Central Valley, citrus thrips are one of the most concerning pests for growers. Citrus thrips feed on young fruit, which results in scarring damage. “Those cuts are then downgraded in the packinghouse, costing our growers money, which is why managing thrips is so important,” said Sandipa Gautam, University of California Cooperative Extension area citrus integrated pest management advisor. …
Citrus Research Board to Host Webinar Series
California’s Citrus Research Board (CRB) has announced its 2023 Citrus Growers Educational Webinar Series. CRB will hold four one-hour webinars on Tuesdays at 10:00 a.m. The dates are June 6, 13, 20 and 27. Each webinar will highlight valuable research and practical discussions for growers. Here’s the lineup: JUNE 6Topic: Tree Density and Pruning Affect Fruit Numbers, Size, Quality and …
Using Gibberellic Acid in California Citrus
Craig Kallsen, University of California Agriculture and Natural Resources (UCANR) citrus and pistachio farm advisor for Kern County, offered suggestions for the use of gibberellic acid (GA3) on citrus in the San Joaquin Valley. Highlights follows: See Kallsen’s full article on gibberellic acid use here. Source: UCANR Sponsored ContentA Simpler, Safer and More Effective Way to Fight HLBOctober 25, 20245 …
California Psyllid Program Requires Compliance Agreements
The California Department of Food and Agriculture’s (CDFA) Asian citrus psyllid (ACP) quarantine program now requires all harvesters/farm labor contractors (FLCs) to have valid compliance agreements to harvest citrus groves. An FLC is defined as any person or establishment that employs people to perform work related to grove management and/or harvesting commercial citrus fruit. The requirement was announced by CDFA’s …
California Introduces Ag Vision Plan
The California Department of Food and Agriculture (CDFA) and California State Board of Food and Agriculture recently introduced Ag Vision. Ag Vision is a decade-long plan dedicated to creating opportunities for California citrus and other agriculture to thrive well into the future. The plan acts as a catalyst for collaboration between industry, public and private partnerships, universities and communities. The …
Late Start for California Red Scale
This year’s first male flight of California red scale is noticeably later than in prior years, according to Sandipa Gautam, area citrus integrated pest management advisor for University of California Cooperative Extension. The cold and wet winter has had a notable impact on pest populations. “Usually, March 1 is tentatively the time when we see the first male flight in …
California’s Valencia Orange Forecast
The California Department of Food and Agriculture (CDFA) recently reported additional information about the state’s 2022–23 Valencia orange forecast of 16.2 million 40-pound cartons. This figure is equal to the 8.1 million 80-pound boxes forecast by the U.S. Department of Agriculture on March 8. The CDFA forecast, also issued on March 8, is below the prior season production of 17.2 …
Highlights From California’s Citrus Showcase
Many growers and industry partners attended the 2023 Citrus Showcase in early March, California Citrus Mutual (CCM) reported. The trade show was sold out with more than 100 industry partners exhibiting the latest in citrus industry technology, research and products. The event started with a panel discussion on the state of the citrus industry. Panel members included Al Bates, president …
Celebrate Sunkist Citrus Day
Sunkist Growers is celebrating its 130th anniversary and California roots with Sunkist Citrus Day on March 1. In anticipation of the day, the fresh citrus cooperative discussed its history and products. Sunkist began in 1893, making it the longest-standing agricultural co-op in the United States. Sunkist’s first advertisement was published in Des Moines, Iowa, in March 1908 to promote the California …
Psyllids Confirmed in Sonoma County, California
California officials have confirmed the presence of HLB-spreading Asian citrus psyllids in a residential area east of Sonoma. The confirmation came following analysis of a survey trap set by the Sonoma County Department of Agriculture. The county department is coordinating with the California Department of Food and Agriculture (CDFA) in responding to the pest’s presence in Sonoma Valley. “Discovery of …
First HLB Confirmation in City of San Diego
The citrus disease HLB has been confirmed for the first time in the city of San Diego, California, making it the second city in San Diego County with a positive detection. (Read about the first San Diego County detection here.) The new detection was made in a residential citrus tree located in the Rancho Bernardo area of the city. The …