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Aug 17, 2010 6:49 AM by Sharlee Barriere

New Citrus Disease Approaching Louisiana

BATON ROUGE, La. (AP) - State agriculture experts are asking
citrus growers to be on the lookout for sweet orange scab of citrus
caused by a fungus and recently found on a satsuma tree in Orange,
Texas, about 3.5 miles west of the Louisiana border.
Previously, this disease had only been reported in South
America.
LSU AgCenter plant pathologist Don Ferrin says the scab presents
little problem, but it affects the ability to sell the fruit
because of the way it looks. Ferrin says it can be controlled with
fungicides applied at and shortly after bloom.
Ferrin says a survey for sweet orange scab within one-mile of
the infected tree in Texas was conducted over the weekend. A
similar check for the disease in Calcasieu Parish will begin this
week.
Citrus scab commonly occurs on lemons, tangerines, grapefruit
and satsumas and rarely occurs on sweet oranges. Sweet orange scab
occurs primarily on sweet oranges, tangerines and satsumas.

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