Despite cooler temperatures during the past few days, apple scab (Venturia inaequalis) spores continue to mature. A significant apple scab infection event is forecasted April 5 to 7, 2022, in Pennsylvania and surrounding area. For those with green tissue present on their apple trees, protection is necessary for this event.
The apple scab fungus overwinters in infected leaves. As it warms up in the spring they mature and produce spores that are discharged into air currents and carried to developing apple buds. The disease negatively affects fruit size and quality (due to blemishes and poor ripening). Over time, repeated defoliation from the disease reduces tree vigor, growth, and yield.
Photo by Penn State Department of Plant Pathology & Environmental Microbiology Archives , Penn State University, Bugwood.org
Apple scab produces gray-to-olive green lesions on the leaves ( as seen above), but may also be seen on blossoms, sepals, petioles, pedicels, and fruit. On leaves, lesions first appear on the undersides of young leaves in the spring as they unfold and are exposed to infection. Leaves are susceptible to infection for about 5 days after they unfold. Fruit may become infected at any time in its development. Typical fruit lesions are distinct, almost circular, rough-surfaced, olive-green spots up to ¾ inch in diameter.
Control information can be found on Penn State Extension website: https://extension.psu.edu/2022-disease-update-apple-scab-infection-event-april-5-7-2022
my loved one! I wish to say that this article is awesome, nice written and come with almost all significant infos.Sfero Döküm Nedir I¡¦d like to look extra posts like this . lets start work on this write-up, I seriously think this excellent website needs far more consideration. I’ll likely to end up again to learn a lot more, many thanks for that information. Valuable information. Fortunate me I discovered your website by accident, and I am stunned why this coincidence didn’t came about earlier! I bookmarked it. You’re the best, I was doing a google search and your site came up for real estate in Longwood, FL but anyway, I have enjoyed reading it, keep it up!
Hello Pik,
I’m glad you are finding useful information here.
– Emily