The alga (cephaleuros virescens) creates small, light green or pale red circular spots on foliage.
32+ Algal Leaf Spot Magnolia. Algal leaf spot begins as a round, green, somewhat fuzzy or velvety colony on the leaf surface. Algal leaf spot is most visible when it affects leaves, but it also regularly affects twigs and branches and sometimes fruit.
Lichens On Magnolia Tree Indicate Plant Is In Decline Ask An Expert Oregonlive Com from cloudfront-us-east-1.images.arcpublishing.com
Algal leaf spot is a common disease of magnolias grown in warm, humid climates. Magnolia will begin dropping leaves in november and continue until early spring. Printed by university of arkansas cooperative extension service printing services.
Frequent rains and wind spread algal spores to wet leaves and twigs. Leaf spot is a fungus affecting the leaves of magnolia trees, fungicides applied early enough may prevent or halt the disease. The spores need water to germinate. Spora penyakit bintik daun ganggang, yang disebarkan oleh hujan, menciptakan masalah besar bagi lebih dari 200 spesies tanaman, terutama tanaman yang.
