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Canker. Butternut canker is a lethal disease of butternut trees, and has no cure. A plant canker is a small area of dead tissue, which grows slowly, often over years. Some cankers are of only minor consequence, but others are ultimately lethal and therefore can have major economic implications for agriculture and horticulture.
Cryphonectria parasitica is a parasitic fungus of chestnut trees. This disease came to be known as chestnut blight. Naturally found in South East Asia, accidental introductions led to invasive populations of C. parasitica in North America and Europe. In the first half of the 20th century, the fungal disease had a devastating economic and social ...
Glomerella cingulata is a fungal plant pathogen, being the name of the sexual stage (teleomorph) while the more commonly referred to asexual stage (anamorph) is called Colletotrichum gloeosporioides. For most of this article the pathogen will be referred to as C. gloeosporioides. This pathogen is a significant problem worldwide, causing ...
According to WebMD, cicada eggs are a food source for oak leaf itch mites — tiny arachnids that aren't even a quarter of a millimeter in length and that are "invisible to the naked eye." Each ...
Laestadia veneta. Myxosporina fagi. Myxosporina quercina. Myxosporina tiliae. Sphaeria errabunda. Apiognomonia errabunda is a fungal plant pathogen and causal agent of oak anthracnose. [1] It is one of the most widespread leaf-associated fungi in the northern temperate zone and is found mostly on oak, beech, and linden trees.
Pecan anthracnose is caused by the fungus Glomerella cingulata and is a disease of pecan trees that causes significant losses of yields as it attacks the nut itself. Pecan anthracnose is favored by wet environmental conditions and warm temperatures above 80 degrees Fahrenheit. [5] Symptoms include dark lesions on the pecan shuck and leaves.
Discula destructiva. Discula destructiva is a fungus in the family Gnomoniaceae which causes dogwood anthracnose, affecting populations of dogwood trees native to North America. [1] It was introduced to the United States in 1978 and is distributed throughout the Eastern United States and the Pacific Northwest. Its origins are unknown. [2]
Hypoxylon canker of shade trees is a weak ascomycete fungus that negatively affects growth and can eventually lead to the death of weak or diseased host trees. [ 1] There are many different species that affect different trees. For example, Hypoxylon atropunctatum, a common species, is found on oak trees, Hypoxylon tinctor affects sycamore trees ...