| What is Oak Wilt Disease?
Oak wilt is a vascular disease of oak (Quercus sp.) caused by the fungus Ceratocystis fagacearum. The oak wilt fungus is spread below ground via root graft transfer and above ground by nitidulid picnic beetles and possibly oak bark beetles. Members of the red oak family die rapidly (4-6 weeks) from oak wilt while members of the white and live oak family have more tolerance and may live longer. Oak wilt disease is widespread throughout the eastern and central United States as well as Texas. Oak wilt is considered one of the most economically important diseases affecting oak trees in America.
Alamo fungicide is the industry standard fungicide for the management of oak wilt and laurel wilt disease. No other product has been as extensively researched and field tested for the control of this disease.
treecaredirect.com is THE LOWEST PRICE for Alamo Fungicide on the web!
Receive a 5% discount when you order 4 or more.
How Much Alamo Fungicide Do I Need for Oak Wilt Management?
Alamo fungicide is dosed based on the tree’s Diameter at Breast Height, known as ‘DBH’. Measure your tree’s DBH by using a tape measure 4’6” off the ground to find its circumference. Divide the circumference by 3.14 to get the tree’s diameter. For trees that split into mulitple stems below DBH, measure the narrowest point below the split. Use this number as the tree’s DBH.
A quart of Alamo fungicide will treat 47 diameter inches at the high rate and 94 diameter inches at the low rate. The high rate is recommended for use on larger trees (over 15 inches in diameter), trees in high disease pressure areas, and for all trees showing symptoms of oak wilt.
Oak Wilt Management Strategy Summary
Red Oak Tree Group:
Treat only asymptomatic (trees showing no oak wilt symptoms) red oak trees that are within root-grafting distance (50 ft) to a red oak tree infected with oak wilt. Alamo fungicide does not work on red oaks that are showing symptoms and it is not recommended you treat these trees.
White Oak Tree Group:
To protect white oak trees (including white oaks, bur oaks, and post oaks) from oak wilt, treat high value white oaks that are within root-grafting distance of infected white oaks. White oak trees which display less than 30% canopy loss from the oak wilt fungus can also be treated successfully with Alamo fungicide. Treating trees with greater than 30% crown loss may reduce the success rate of an Alamo fungicide treatment. White oak trees are more tolerant than red oak trees and may survive for several years after becoming infected. Research has demonstrated that therapeutic treatments on white oak trees are effective in saving white oak trees from oak wilt.
Live Oak Tree Group:
Live oak trees are very suceptible to oak wilt disease, especially in Texas. To protect live oak trees from oak wilt, treat asymptomatic (live oak trees showing no oak wilt symptoms) live oak trees that are within root-grafting distance (75 to 200 ft.) of infected live oak trees. Live oaks are intermediate in resistance to the oak wilt fungus and typically die within 12 months of initial symptom expression, although a small percentage of the population of infected trees may live for extended periods of time in varying states of decline. Treat symptomatic live oaks which display less than 30% canopy loss from oak wilt. Treating live oak trees with greater than 30% crown loss may reduce the efficacy of Alamo fungicide.
|
