Mitigating Mummy Berry Disease of Blueberry

 
Mummy berry
Mummy berry disease of blueberry.
Photo courtesy of NCSU
Cooperative Extension Service

 

Blueberries may be nutritional powerhouses, but some types are no match for the fungus Monilinia vaccinii-corymbosi, which causes “mummy berry” disease.

Fortunately, U.S. Department of Agriculture (USDA) scientists …

Bacterial Leaf Scorch of Blueberry

 

Bacterial Leaf Scorch
Scorch symptoms (late summer) observed
on plants infected with Xylella fastidiosa.
Photo courtesy of University of Ga. CES.

The bacterium Xylella fastidiosa is the causal agent of bacterial leaf scorch of blueberry, which primarily affects cultivars of southern highbush blueberries(interspecific …

Stem Blight of Blueberry

 

Stem blight of blueberries
Early symptoms of stem blight on blueberries are yellowing, reddening
or drying of leaves on one or more
branches. Photo courtesy of NCSU
Cooperative Extension Service.

Blueberry stem blight caused by the fungus Botryosphaeria dothidea and other Botryosphaeria species is …

Leaf Rust of Blueberry

 

Rust
Rabbiteye cultivars suffer from pre-
mature defoliation that appears
to be caused by a rust fungus,
tentatively identified as
Pucciniastrum vaccinii (Synonym P.
myrtillus). Photo courtesy of
NCSU Cooperative Extension Service.

Leaf rust, caused by the rust fungus, Pucciniastrum vaccinii …

Alternaria Leaf Spot of Blueberry

 

Alternaria leaf spot in blueberries
 

Alternaria Leaf Spot (Alternaria tenuissima) occurs primarily in the spring during prolonged periods of cool wet weather, when spores are produced in abundance. In most cases only lower leaves are affected; however, instances do occur when severe infection completely defoliates …

Double Spot and Gloeocercospora Leaf Spot

Dothichiza caroliniana and Gloeocercospora inconspicua

In late summer, the double spot fungus develops a secondary necrotic area around the original lesion spreading in an irregular to fan-shaped pattern. The gloeocercospora leaf spot appears on the foliage by mid-summer as large …