since July. I
recently wrote an article for PSU’s Fruit Times:
https://extension.psu.edu/2018-disease-update-marssonina-blotch-on-apple-trees
Moral of the story: treat it like you would deal with apple scab. Sanitation
will be key keeping this disease in check year to year.
Kari Peter, Ph.D
with
a virus that infects a woody plant; however, we’re trying. I believe the
decline issue is a complex of things occurring (Winter injury? Drought?
Herbicide? Rootstocks prone to stress (ie M9)?Etc.), not just one issue.
Kari Peter, Ph.D.
Assistant Research Professor - Tree Fruit Pathology
, such as hail. Do not spray it beyond these
times. If you are concerned about new shoot growth (if this is a new orchard
pushing right now), I would recommend Cueva to limit spread of shoot blight.
Kari Peter, Ph.D.
Assistant Research Professor - Tree Fruit Pathology
Department of Plant Pathology
