New California Pest Quarantine Areas Declared

New detections of two pests – the European Grapevine Moth (EGVM) in the Lodi area and invasive melon fruit flies near Bakersfield – have caused the California Department of Food and Agriculture (CDFA) to declare new pest quarantine areas. The EGVM finds have led to an extension of the quarantine for the pest to San Joaquin County. Ninety-six square miles are now under quarantine there, bringing the total area under quarantine statewide to 1,995 square miles. To see a map of this quarantine area, or any other in the state, visit www.cdfa.ca.gov.

The quarantine primarily affects growers as well as those who harvest, transport and otherwise process or handle crops. These business people generally sign compliance agreements that indicate how crops, vehicles, equipment and related articles are to be treated during the quarantine.

Residents are also affected by the quarantine. Those who have grapes, stone fruit trees (peaches, plums, etc.) and other “host plants” for this pest in their yards are asked to harvest and consume their fruit on-site to further limit the risk of spreading the pest.

EGVM, or Lobesia botrana, is found in southern Asia, Japan, Europe, North Africa, Anatolia, the Caucasus and in South America. The pest primarily damages grapes, but has also been known to feed on other crops and plants.

The EGVM larvae, not the adult moths, are responsible for the damage to grapes. Larvae that emerge early in the spring feed on grape bud clusters or flowers and spin webbing around them before pupating inside the web or under a rolled leaf. If heavy flower damage occurs during this first generation, the affected flowers will fail to develop and yield will be reduced.

Second-generation larvae enter the grapes to feed before pupating in the clusters or in leaves. Larvae of the third generation – the most damaging – feed on multiple ripening grapes and expose them to further damage from fungal development and rot. These larvae overwinter as pupae in protected areas such as under bark, and emerge as adults the following spring.

The second quarantine announced Thursday measures 82 square miles and is in place in Kern County, where invasive melon fruit flies have been detected in the Arvin/Mettler area.

The movement of host fruits and plants grown in the quarantine areas is restricted. Residents living within the boundaries are asked not to move host plants and materials from their property.

“We don’t see the melon fruit fly in California as often as some as some other pests, but it is still very damaging,” said CDFA Secretary A.G. Kawamura. “This quarantine allows us to protect surrounding uninfested areas by preventing movement of the fruit fly.”

While fruit flies and other pests threaten California’s crops, the vast majority of them are detected in urban and suburban areas. The most common pathway for these pests to enter the state is by “hitchhiking” in fruits and vegetables brought back illegally by travelers as they return from infested regions around the world.

The melon fly is native to Asia. The melon fly occurs in Africa, Sri Lanka, China, Guam, India, New Guinea, Taiwan, Rota, the Ryukyu Islands, Thailand and much of Southeast Asia. In the United States, its distribution is limited to the Hawaiian Islands. The larvae of the melon fly have been recorded in over 100 different hosts worldwide. It is a particularly serious pest of melon and cucumber-type crops.

A female melon fly lays eggs under the skin of host fruit. These eggs hatch into larvae, or maggots, which tunnel through the flesh of the fruit or other plant parts, leaving the interior of the fruit a rotten mass and making it unfit for consumption.

Treatment of the melon fruit fly relies upon trapping. Fly lure is placed in a trap that attracts and eradicates the insects. Treatment in Kern County is already underway.

 

Leave a Reply

Featured Stories

Farm ManagementBill Gates Uploading Lots Of Florida Farmland
October 22, 2014
Recent acquisition for the Microsoft icon involves more than 4,500 acres for nearly $28 million. Read More
GenNext GrowersRegister Now For The GenNext Growers Webcast
October 22, 2014
In the first installment of the GenNext Webcast Series, you will learn how to engage with lawmakers and ag associations to help shape a better future for your business and for agriculture. Read More
FruitsAnnual Santa Maria Strawberry Meeting Approaching
October 22, 2014
The meeting will focus on IPM practices, weed management, updates on fumigation, and more. Read More
Apples & PearsUSApple’s AppletizeMe Personality Quiz Help Consumers Find Ideal Apple Varieties and Perfect Food Pairings
October 22, 2014
Award-winning national apple month campaign returns with more featured varieties and informative videos. Read More
Farm ManagementUSDA Awards $18 Million To Stimulate Research And Development Innovation
October 22, 2014
The grants will provide resources to help small operations create breakthroughs, says USDA Secretary Tom Vilsack. Read More
CitrusEPA Launches Program To Reduce Pesticide Drift
October 22, 2014
The voluntary star-rating program aims to protect people, wildlife and the environment. Read More
CitrusMcCrometer Introduces New Ag Management Mobile App
October 22, 2014
The app displays data on weather, ET, soil moisture, water flow, and more. Read More
Apples & PearsNew York Apple Growers Partner With Grocer To Introduce SnapDragon Apples
October 22, 2014
First apples of this new variety to hit Wegmans stores as part of a marketing effort. Read More
CitrusAgriculture, Interior Departments Partner To Measure Conservation Impacts On Water Quality
October 22, 2014
Goal is to provide science-based information for watershed wellness. Read More
Stone FruitIntroducing A Gem Of A Peach For Central Florida
October 22, 2014
The newest variety to come from the UF Stone Fruit Breeding Program is another “gem,” UFGem! This peach variety is Read More

The Latest

Farm ManagementBill Gates Uploading Lots Of Florida Farmland
October 22, 2014
Recent acquisition for the Microsoft icon involves more than 4,500 acres for nearly $28 million. Read More
GenNext GrowersRegister Now For The GenNext Growers Webcast
October 22, 2014
In the first installment of the GenNext Webcast Series, you will learn how to engage with lawmakers and ag associations to help shape a better future for your business and for agriculture. Read More
FruitsAnnual Santa Maria Strawberry Meeting Approaching
October 22, 2014
The meeting will focus on IPM practices, weed management, updates on fumigation, and more. Read More
Apples & PearsUSApple’s AppletizeMe Personality Quiz Help Consumers…
October 22, 2014
Award-winning national apple month campaign returns with more featured varieties and informative videos. Read More
Farm ManagementUSDA Awards $18 Million To Stimulate Research And Devel…
October 22, 2014
The grants will provide resources to help small operations create breakthroughs, says USDA Secretary Tom Vilsack. Read More
CitrusEPA Launches Program To Reduce Pesticide Drift
October 22, 2014
The voluntary star-rating program aims to protect people, wildlife and the environment. Read More
CitrusMcCrometer Introduces New Ag Management Mobile App
October 22, 2014
The app displays data on weather, ET, soil moisture, water flow, and more. Read More
Apples & PearsNew York Apple Growers Partner With Grocer To Introduce…
October 22, 2014
First apples of this new variety to hit Wegmans stores as part of a marketing effort. Read More
CitrusAgriculture, Interior Departments Partner To Measure Co…
October 22, 2014
Goal is to provide science-based information for watershed wellness. Read More
Stone FruitIntroducing A Gem Of A Peach For Central Florida
October 22, 2014
The newest variety to come from the UF Stone Fruit Breeding Program is another “gem,” UFGem! This peach variety is Read More
CitrusIt’s Time For Young Farming Leaders To Engage [Op…
October 21, 2014
Florida Grower editor Frank Giles says there are capable and talented youths in the ag field ready to step up and take the reins. Read More
Farm ManagementResearchers Finding Biofuel Fits For Florida
October 21, 2014
Alternative crops identified that are suited for the state's climate and can easily be processed for power. Read More
CitrusBayer CropScience Launches New Award To Recognize Produ…
October 21, 2014
Award recognizes innovation that enhances the role of produce in creating better lives. Read More
FruitsCalifornia Department Of Food And Agriculture Awards $3…
October 21, 2014
State Water Efficiency And Enhancement Program highlights projects implement irrigation systems that reduce water and energy use. Read More
FruitsWashington State University Researchers See How Plants …
October 21, 2014
Results could lead to development of crops that recover from sun damage more easily. Read More
CitrusReport: Major Food And Agriculture Employers Can’t Fi…
October 21, 2014
Current shortage of young farming professionals means ample employment opportunity for the next generation. Read More
Apples & PearsInvasive Pest Found First Time In U.S. At Border Crossi…
October 20, 2014
Moth known to feed on apples, apple buds, leaves, and shoots, is found in a container full of pump valves originating in China. Read More
More Vegetables6 Savory Tomato And Pepper Varieties For Florida Grower…
October 20, 2014
Leading vegetable seed companies highlight a half dozen high-performance selections for producers in the Sunshine State. Read More