“We have eradicated this pest twice before in 1958 and 1993, and we are confident in our methods to eradicate LEM again.”. As fruit experienced severe browning at the fumigation rates required to kill mites and other insect pests, the project moved its focus on to the oil and water method. However, it may be in other counties as well; this is under investigation. Subscribe/RSS. They can grow to 100 feet (30 m.) tall and have an equal spread. Copyright: Copyright © Horticulture Innovation Australia Limited 2018. Following this work, Hort Innovation Lychee Fund project Mite and insect disinfestation of lychee fruit using high pressure water sprays (LY18000) was established to look at optimising the efficacy of high-pressure water application, to allow higher throughput on the packing line. The effect of the oil treatment in combination with irradiation on fruit quality was also evaluated. While lychees heading to these export destinations are subject to an irradiation protocol to eradicate target quarantine pests, the non-target erinose mite is able to withstand current irradiation rates – and higher rates could damage the fruit. DPI, in partnership with UF-IFAS has conducted extensive research which will guide the eradication process. As part of their work, the project team established a prototype roller conveyer incorporating an in‐line water spray, oil flood spray and post-oil water spray, which significantly reduced the count of live mites. These control measures will be taken at no expense to the owner and all debris will be removed. - Once treatments are completed, trees will be monitored monthly for the presence of lychee erinose mite for 3 months. Full details of the project can be found in the final research report, available for download at the top of this page. The Final Research Report (in part or as whole) cannot be reproduced, published, communicated or adapted without the prior written consent of Hort Innovation (except as may be permitted under the Copyright Act 1968 (Cth)). Further, the oil treatment was assessed in combination with irradiation, with no adverse interaction between the two seen – and during the project, a commercial shipment of lychees treated using oil and irradiation successfully entered the US. trees and decrease lychee yields by 80%. Funding statement: This project was a strategic levy investment in the Hort Innovation Lychee Fund. Other trees in the area are being surveyed and monitored for the presence of this mite. The lychee erinose mite is a pest of lychee fruit trees. It causes erineum galls, or hairy abnormal growths, to form on the leaves of the lychee tree. - If a negative tree becomes positive for lychee erinose mite, the tree will receive the positive tree treatment process. Research reports, publications, fact sheets and more, Industry Strategic Partners and Marketing Managers, Hort Frontiers strategic partnership initiative, Strategic levy investment in research and development, View the report (2182 KB). Out of state shipments originating in Lee County are allowed with a proper phytosanitary certificate. To date, only one positive tree has been identified in Miami-Dade County. This program is funded through the Plant Pest and Disease Management and Disaster Prevention Program in partnership with the USDA-APHIS. Key research provider: The Queensland Department of Agriculture and Fisheries, Publication date: Thursday, April 4, 2019, Treatment for mites on lychee fruit prior to irradiation for improved market access (LY16002). © 2018 Horticulture Innovation Australia Limited. See Attachment A for details of treatment. Without treatment, an infestation of mites can severely damage the tree, fruit and flowers. The treatment includes defoliation and pruning of the tree followed by up to eight applications of sulfur-based miticide. Treatment Aims To Protect Lychee Trees In Miami-Dade, USDA Provides Florida $4 Million For Ag Pest And Disease Protection, United Fresh’s FreshFacts Report Identifies Retail Trends. QUESTIONS OR CONCERNS CONTACT THE DPI HELPLINE The Florida Department of Agriculture and Consumer Services is beginning treatment of lychee trees in Miami-Dade County, the first of eight Florida counties undergoing eradication, for lychee erinose mite (LEM) to protect trees and crops from severe damage. Retreat each lychee tree identified as positive for Lychee Erinose Mite with approved sulfur‐based miticide seven (7) times after the onset of bud/leaf break unless directed by FDACS, DPI to stop treatment. After identification and an initial survey, the department quarantined movement of any lychee plant, plant parts or fruit from Lee County to any other Florida destination due to the dense population of the mite in the county. treatments for the presence of lychee erinose mite. In severe cases flowers are destroyed and fruit-setting prevented. SPW On RFD-TV: NC SweetPotatoes Gets A New A New Chief, Record Achievement For Four UF/IFAS Faculty Members, First Ever Florida-Israel Agriculture Innovation Summit Held, Low-Income Consumers — Particularly Children — Face Increased Food Safety Risk, Allowing A Cell Tower On Your Land — What You Give Up Versus What You Gain. Though oil alone didn’t completely eliminate the pests, the addition of pressure washing before, and two minutes after, the oil application further reduced their incidence. In looking at additional treatments to tackle mites, the project team evaluated postharvest dipping and flood spraying with paraffinic oil, and the potential for oil in combination with physical pre- and post-treatment cleaning using high-pressure/high-volume water sprays. Lychee erinose mite is a serious pest that deforms the plant and produces reddish-brown velvety growth on the underside of the leaves. But even lovely lychee trees are not pest free. Unchecked, an infestation of mites … A Futures Contract On Produce In The U.S.? Click here for a map of Florida counties with LEM through March 2020. The purpose of this document is to provide lychee and longan growers with control recommendations for the Lychee Erinose Mite … To find out more information or to track the eradication process visit FDACS.gov/LEM or contact the FDACS-DPI Helpline at 888-397-1517. The project did find that oil dips could exacerbate surface fungi (rots) from about 10 days after treatment, predominately around the stalk end of fruit, but this problem wasn’t found with the flood spraying approach. “The eradication of the lychee erinose mite is essential to protecting Florida’s lychee industry, the number one commercial production area for lychee in the United States,” said Dr. Trevor Smith, Director of the FDACS Division of Plant Industry. 3. Without treatment, an infestation of mites can severely damage the tree, fruit and flowers. Lychee trees are susceptible to erinose mite but a simple remedy will have them producing fruit again in no time. The researchers investigated simple postharvest treatments to reliably remove the mite from fruit destined for markets including the US and New Zealand. The researchers found that paraffinic oil at three per cent concentration applied as a 30 second dip or flood spray reduced mites and other surface insects on fruit. The mite causes erineum galls (hairy, abnormal growths) to form on the leaves of the tree. Also of note, in the first year of LY16002 the project team considered the use of fumigation with ethyl formate and carbon dioxide as an alternative treatment for mites. Re-skinned lychee varieties proved particularly suited to the oil treatment, with colour enhancement recorded and the fruit storing well for up to two weeks at 5°C. (Nicky Redl - ABC Rural) Map Rockhampton 4700. Surveys for LEM will continue across the state. Currently, the mite is present in eight Florida counties, including: Trees already identified as positive for LEM in other counties will begin treatment in the coming weeks. This process includes checking all lychee trees within a half-mile radius of any new find for the presence of the mite and resurveying previous negative sites. “The eradication of the lychee erinose mite is essential to protecting Florida’s lychee industry, the number one commercial production area for lychee in the United States,” said Dr. Trevor Smith, Director of the FDACS Division of Plant Industry. See Attachment A for details of treatment. The researchers investigated simple postharvest treatments to reliably remove the mite from fruit destined for markets including the US and New Zealand. In early 2018 the mite was found in Lee County. LY16002 Disinfestation of mites on lychee in conjunction with radiation for improved market access of lychee to the USA 6 Introduction Australian lychee (Litchi chinensis) was granted market access to the USA in 2013 under a trial protocol that included irradiation as the disinfestation treatment. This project ran from 2016 to 2018 to help address a potential barrier to the export of Australian lychees: the presence of common pest the lychee erinose mite (Aceria litchii). Lychee tree pests can cause problems for the homeowner, given the size of the tree. Efforts to control the mite are essential to safeguarding the industry. LEM has been successfully eradicated twice in Florida, first in 1958 in Sarasota County and then in Miami-Dade County in 1993.

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