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World Markets and Trade

USDA Citrus Report – July 2018

Export Protocol

China Protocol

Growers and shippers who intend to export fruit to China must comply with phytosanitary requirements for Phytophthora Brown Rot of Citrus.  Click on the following links for more information.

China Brown Rot Compliance 2016-17
CCQC Notice for Mandatory Copper Spray
Brown Rot GAPS
China Protocol – Required Documentation
Industry Affirmation Agreement (Except Tulare County)
Industry Affirmation Agreement (Tulare County Only)
SOPs Other Than Tulare County
SOPs for Tulare County Only

Korea Protocol

To preserve access to this critical market it is incumbent upon each grower, shipper, and the industry as a whole to show progress in reducing detections of Fuller rose beetle and California red scale. QIA had made it clear that they want mitigation measures other than methyl bromide fumigation in place in the near future.

To meet the requirements for Korea, growers should follow the long established Septoria Guidelines by making the recommended fungicide treatments, implement effective California red scale control, and follow the Fuller rose beetle UC IPM Guidelines.

The provisions for meeting Fuller rose beetle requirements include:

  • Skirt pruning to prevent skirts from contacting the ground
  • Weed control sufficient to prevent forming a bridge from the ground to tree skirt
  • Two treatments in accordance with the UC Integrated Pest Management (IPM) Program guidelines

The California Citrus Quality Council (CCQC) is sending the following message to provide recommendations for control of Septoria spot caused by Septoria citri for shipments to Korea. Additionally, an affirmation letter is attached, which requires all packinghouses shipping to Korea to follow the Korea protocol, maintain records to demonstrate compliance, and maintain a signed copy of the letter at your facility for regulatory review.

This is an advisory for all California orange packinghouses in all counties regarding the first preharvest field-application of a fungicide for all orange blocks eligible to ship to Korea in the 2018/19 season. The first field application of zinc-copper-lime or a registered alternative is highly recommended for all oranges planned for exportation to Korea. The treatment should be applied between October 15 and November 30 for all California oranges including Navels and Valencias shipped to Korea. Registered alternatives such as Quadris Top® (azoxystrobin and difenoconazole), Abound® (azoxystrobin), and some other fungicides are also highly effective and should be applied in November. Registered alternatives could be used in rotation with zinc-copper-lime treatments if additional applications of fungicides are needed later in the season.

These fungicide applications are protective treatments for management of Septoria spot. Zinc-copper-lime or registered alternatives should be applied prior to winter rains. These treatments are much less effective if applied after precipitation and subsequent infection, and only the alternatives have sporulation control.

Timing of the second and third fungicide treatments will be based on the accumulation of temperatures below -1 degree C and subsequent accumulation of precipitation. Industry advisories will be made based on forecasted weather conditions and the risk assessment model developed by the University of California. Thus, additional applications during the winter and early spring may be needed depending on environmental conditions.

A revised NAVEK protocol was developed for the 2018-19 harvest season. Growers and packers may apply fungicide treatments based on the same schedule as in previous years with an initial application before Nov. 30th and a second/third application based on the model described above. Alternatively, they can use the revised NAVEK protocol as follows:

For NAVEK samples submitted after January 1:

  1. a) samples negative for Septoria spot – grower lots are exempt from the second fungicide application, but samples should be re-submitted after 45 days if the harvest is extended;
  2. b) samples positive for Septoria spot – the second application must be with an anti-sporulation fungicide (e.g., Luna Sensation, Priaxor, Quadris Top) alone or in a mixture with copper. The sample should be re-submitted after fungicide application and within one month before harvest to the NAVEK lab. The check box “Re-submission after a previous positive” on the electronic form should be checked. Re-submitted samples will be evaluated for sporulation of the pathogen, and if there is no sporulation, the fruit lot can be shipped. If positive for sporulation, then the lot should be diverted to other markets.
  3. c) Based on a) and b) above, if a second application is not done or the second application is done with an anti-sporulation fungicide, then it is strongly recommended that fruit are postharvest treated with the highest-rated anti-sporulation fungicide Graduate A+ to minimize sporulation of citri in transit.

Attached for your information are voluntary Good Agricultural Practices (GAPs) that have been developed by the citrus industry and the University of California to provide guidance on the Septoria program including sampling procedures for the Navel and Valencia Exports to Korea (NAVEK) program. The Revised NAVEK Program is also outlined and the guidelines for the first zinc-copper-lime or alternative fungicide treatments for shipments to Korea are included in the GAPs and they are attached. An MRL table for fungicides used on citrus in selected markets is presented in the GAPs. For the most current MRLs, consult the Global MRL database at www.globalmrl.com.

The NAVEK lab will begin accepting orange samples beginning Monday, October 29, 2018. Samples may be dropped off at the lab between 8:00 am and 4:00 pm Monday through Thursday. When submitting samples to the NAVEK lab, please use the Revised electronic NAVEK Sample form which can be downloaded from CCQC’s website. Samples should be picked the same day or one day before submitting to the lab. Results can be expected 7 days after submission of the sample.

Resources
2018-19 Septoria GAPs
2018-19 Fungicide Tables
Septoria Symptom Collection