Fruit Problems Reported in Mississippi 2012

Each year the MSU Plant Diagnostic Clinic compiles a list of diseases/insects/disorders they see during the year.  Below are those that were seen in 2012.

Apple (Malus x domestica)
 Black Rot (Sphaeropsis malorum) – (1)
 Captan Burn Suspected – (1)
 Cedar-apple Rust (Gymnosporangium juniper-virginianae) – (3)
 Frogeye Leaf Spot (Sphaeropsis malorum) – (1)
 Insect Injury Suspected – (1)
 Phytophthora Root/Crown Rot (Phytophthora sp.) – (1)

Blackberry (Rubus sp.)
 Botryosphaeria Cane Canker (Botryosphaeria dothidea) – (1)
 Glyphosate Herbicide Injury Suspected (Abiotic) – (1)
 Herbicide Injury Suspected (Abiotic) – (1)
Blueberry (Vaccinium sp.)
 Chlorothalonil Injury (Abiotic) – (1)
 Cold Injury Suspected – (1)
 Glyphosate Herbicide Injury Suspected (Abiotic) – (1)
 Nutritional Problem (Iron Deficiency) – (1)

Boysenberry (Rubus loganobaccus)
 Leaf Blotch (Cercospora rubi) – (1)

Cherry (Prunus sp.)
 Sunscald (Abiotic) – (1)
 Chemical Injury Suspected (Captan with dormant oil) – (1)

Citrus (Citrus sp.)
 Anthracnose (Glomerella cingulata) – (1)
 Insect Injury Suspected (Leaf Miner) – (1)
 Nutrient Deficiencies Suspected (Nitrogen and Magnesium) 0 (1)

Grape (Vitis sp.)
 Anthracnose (Elsinoe ampelina) – (1)
 Black Rot (Guignardia bidwellii) – (1)
 Black Rot (Phyllosticta ampelicida) – (1)
 Insect Injury Suspected – (1)
 Root Dysfunction Suspected (Abiotic) – (1)

Grape, Muscadine (Vitis rotundifolia)
 Black Rot (Guignardia bidwellii) – (1)
 Environmental Stress Suspected – (1)

Lemon (Citrus limon)
 Cultural or Soil Fertility Problem – (1)

Loquat (Eriobotrya japonica)
 Root Stress or Nutritional Deficiency Suspected – (1)

Orange (Citrus sp.)
 Fruit Split (Potassium deficiency and wet weather suspected) – (1)
 Pseudocercospora Fruit Spot Suspected (Pseudocercospora sp.) – (1)
 Russet mites suspected – (1)

Peach (Prunus persica)
 Fungal Shot Hole (Wilsonomyces carpophilus) – (1)

Pear (Pyrus sp.)
 Captan Injury Suspected – (1)
 Scab (Venturia sp.) – (1)

Pecan (Carya illinoinensis)
 Bunch Disease (Phytoplasma) – (1)
 Kernel Fuzz (Abiotic) – (1)
 Leaf Spot (Discosia sp.) – (1)
 Liver Spot (Asteroma caryae) – (1)
 No Disease (Planted too deep, graft below soil line and graft constricted) – (1)
 Nutritional Problem (Zinc deficiency) – (1)
 Phomopsis Canker (Phomopsis sp.) – (1)
 Powdery Mildew (Oidium sp.) – (1)
 Scab (Fusicladium effusum) – (1)

Plum (Prunus sp.)
 Insect Injury Suspected – (1)

Pomegranate (Punica granatum)
 Cercospora Leaf Spot (Pseudocercospora sp.) – (1)
 Insect Injury Suspected – (1)

Raspberry (Rubus sp.)
 Pythium Root Rot (Pythium sp.) – (1)

Satsuma (Citrus reticulata)
 Root Stress/Dysfunction Suspected – (1)

Strawberry (Fragaria x ananassa)
 Anthracnose (Colletotrichum fragariae) – (1)

You can find the full list on the lab website: msucares.com/lab

 

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