Friday, April 11, 2008

Greenhouse and Landscape - Current Disease and Insect Issues

The following are some current pest issues in greenhouse crops and landscapes in Delaware and the nearby region.

Sclerotinia is being found in bedding plants in greenhouses. It has been seen on on lobelia and petunia. Please be on the look-out for this, as it may be a supplier issue. Plants can die quickly and have sclerotia at the base. A chlorotic ringspot virus is being found on angelonia (a chlorotic ringspot), and bacterial black leaf spot is being found on celosia.

In the landscape, Juniper webworm has been found, Eastern tent caterpillars are actively feeding and White pine sheath mites should be active. Diagnostic lab samples have been mostly overwintering insects (scales).

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