Every year the Mississippi State University Extension Plant Diagnostic Lab published a list of the pathogens/problems that were identified. The Lab can be found online here: msucares.com/lab. In 2015 several pathogens/problems were seen on fruit crop plants in Mississippi. Below is the run-down. The number after the name indicates how many times it was diagnosed in 2015:
Apple (Malus x domestica)
Abiotic (Potassium deficiency suspected) (1)
Alternaria blotch (Alternaria mali) (1)
Bitter rot (Colletotrichum sp.) (1)
Burrknot (genetic) (1)
Cedar apple rust (Gymnosporangium juniperi-virgianae) (1)
Cedar apple rust resistance reaction (Gymnosporangium juniperi-virgianae) (2)
Flyspeck (Schizothyrium pomi) (1)
Leaf spot (Gloeosporium sp.) (1)
Leaf spot (Pseudocercospora sp.) (1)
Banana, Japanese (Musa basjoo)
Root rot (Pythium sp.) (1)
Blackberry (Rubus sp.) ‘Arapaho’
Abiotic (herbicide injury) (1)
Blueberry (Vaccinium sp.)
Canker (Fusicoccum sp.) (1)
Leaf and Fruit Spot (Exobasidium maculosum) (1)
Cherry (Prunus sp.)
Leaf spot (Cercospora circumscissa) (1)
Shot-hole (Wilsonomyces carpophilus) (1)
Chestnut, Chinese (Castanea mollisima)
Abiotic (high pH) (1)
Fig, Common (Ficus carica)
Fig canker suspected (Diaporthe eres) (1)
Web blight (Rhizoctonia solani) (1)
Wood boring beetles (1)
Lemon (Citrus limon)
Alternaria leaf spot of rough lemon suspected (Alternaria sp.) (1)
Mayhaw (Crataegus aestivalis)
Rust (Gymnosporangium sp.) (1)
Muscadine (Vitus rotundifolia)
Leaf blight (Pseudocercospora vitis) (1)
Peach (Prunus persica)
Bacterial spot (Xanthomonas arboricola pv. Pruni) (1)
Brown rot (Monilinia fructicola) (4)
Shot-hole (Wilsonomyces carpophilus) (1)
Pear (Pyrus sp.)
Bacterial shot-hole disease (Pseudomonas syringae) (1)
Cedar quince rust (Gymnosporangium clavipes) (2)
Leaf spot (Phoma sp.) (1)
Spot anthracnose (Elsinoë pyri) (2)
Pecan (Carya illinoinensis)
Aphid injury suspected (1)
Burl (undetermined cause) (1)
Plum (Prunus sp.)
Black-knot (Apiosporina morbosa) 91)
Gummosis (Botryosphaeria sp.) (1)
Shot-hole disease (Wilsonomyces carpophilus) (1)
Shot-hole borer suspected (1)
Satsuma (Citrus reticulata)
Abiotic (nutrient deficiency suspected) (1)
Abiotic (alternate bearing) (1)
Fruit drop (abiotic) (1)
Fruit split (abiotic) (1)
Sweet orange scab suspected (Elsinoe fawcettii) (1)
Strawberry (Fragaria sp.)
Abiotic (acetochlor plus heavy clay soil plus cold wet weather suspected) (1)
Abiotic (nutrient deficiency suspected) (1)
Abiotic (root stress-too wet) (1)
Bacterial leaf scorch (Xylella fastidiosa) (1)
I have photos of my pear tree that appears to be deserted. To whom could I send them to diagnose the problem?
Kerry – you can send them to me. My email is eric.stafne at msstate.edu
Sorry …I meant diseased.
Sorry …I meant diseased.