| California Quarantine Alert |
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| Cereal leaf beetle |
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Cereal leaf beetle, a pest of small grains and grasses, has spread into Oregon. California maintains an exterior quarantine for this insect. Small grains, hay, straw, grasses (including ornamentals), some species of pines, used harvesting equipment and other potential hosts from infested counties are prohibited entry into California unless they are properly treated and certified.
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| Background |
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Cereal leaf beetle (CLB) is native to Europe and parts of Asia. It was first found in the U.S. in 1962 in Michigan. CLB spread rapidly throughout the East and in the mid-1980's it was found in Utah. Since then it has been expanding its range in the West. In April 1999 CLB was identified for the first time in Oregon. ODA has just completed a state-wide survey and cereal leaf beetles have been found in sixteen counties: Baker, Crook, Malheur, Union, Umatilla, and Wallowa in eastern and central Oregon and Benton, Clackamas, Columbia, Lane, Linn, Marion, Multnomah, Polk, Washington, and Yamhill in western Oregon. The beetles are strong flyers and are expected to spread throughout the state. The entire state of Oregon has been added to California's exterior quarantine. The counties listed above have been officially designated by California as infested.
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| Damage |
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Oats are the favored host followed by barley, wheat, and various grasses including Timothy. Both larvae and adults feed between the leaf veins, especially on the flag leaf. Damaged leaves have white stripes or slits. Heavily infested fields have a silvery appearance. Biological controls have been quite successful in other parts of the country at keeping damage below levels that require treatment. ODA and USDA have already made parasite releases in Oregon.
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| California's Quarantine |
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Commodities covered related to the nursery/Christmas tree industry -
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straw, hay, and marsh hay (including straw used as packing material);
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grass sod and ornamental grasses;
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plant debris and litter;
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all Scotch pine, red pine, and Austrian pine, (Pinus sylvestris, P. resinosa, and P. nigra) including all subspecies thereof.
These commodities are prohibited if they come from infested counties (Baker, Benton, Clackamas, Columbia, Crook, Lane, Linn, Marion, Malheur, Multnomah, Polk, Umatilla, Union, Wallowa, Washington, and Yamhill) unless they are treated and certified before shipment to California. At this time, the only approved treatments include aluminum phosphide and methyl bromide fumigation for pines, or a carbaryl or Malathion spray-drench for containerized grasses. Regulated commodities listed above and coming from uninfested counties must be certified by the Oregon Department of Agriculture as to origin before the shipment is made.
Any nursery intending to ship any of the plant products listed above to California should contact the department several days prior and the horticultural inspector for your area will determine eligibility.
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| Summary |
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Entire state of Oregon regulated by the California Department of Food and Agriculture for Cereal Leaf Beetle.
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Regulated Products : See above listing
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Shipments affected: All listed plant products going into or through California
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Certification for shipment to California from:
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Infested counties: Treatment certificates for listed products required.
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Non-infested counties: Certificate of Origin for listed products required.
Requests for certification of origin or treatment? Contact, Gary McAninch, Oregon Dept. of Agriculture, Plant Division at: (503) 986-4644.
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