Bureau/Division/Agency

Forest Services

Document Type

Text

Exact Creation Date

6-2020

Broad Creation Date

2020

Description

The most commonly reported eastern white pine needle diseases (WPNDs) that cause premature needle loss in eastern white pine (EWP) in the northeast are Brown spot needle blight (Lecanosticta acicola), Bifusella linearis and Dooks needle blight (Lophophacidium dooksii). The prevalence and distribu-tion of these diseases vary across the region. WPNDs are favored by prolonged periods of wet weather in spring, as the diseases are spread by rain splash during needle elongation. It is important to remember that for the WPNDs mentioned here, infection of current-year needles happens in spring. It is these needles that are the source of new infections during the following spring. Infected second-year needles eventually discolor and drop off the tree in mid-summer. Heavy disease pressure can result in absence of needles and branch dieback in the lower portions of trees and low live crown ratios.

Language

English

File Size

1.1 MB

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Rights Statement

No Copyright - United States. URI: http://rightsstatements.org/vocab/NoC-US/1.0/
The organization that has made the Item available believes that the Item is in the Public Domain under the laws of the United States, but a determination was not made as to its copyright status under the copyright laws of other countries. The Item may not be in the Public Domain under the laws of other countries. Please refer to the organization that has made the Item available for more information.