Alabama OTPS Weed/Insect Questions &
Answers(RATED A)
Azalea - ANSWER Gall (Exobasidum) Diag: Symptoms Control: Sanitation; open
canopy; prot. Sprays
Botrytis Blosssom Blight; Ovulinia Blossom Blight Diag: (Symptoms); Microscopy;
Culture Control: Sanitation
Camellia - ANSWER Virus
Diag: Symptoms Control: Remove plants
Crabapple - ANSWER Cedar Apple Rust (Gymnosporangium) Diag: Symptoms; Signs
Control: Sanitation and eliminate alternate host; protective spray
Dogwood - ANSWER Spot Anthracnose Diag: Symptoms Control: Sanitation
Holly - ANSWER Leaf Spot (Fungal) Diag: Symptoms, Culture Control: Sanitation
Juniper - ANSWER Phomopsis Blight Diag: Microscopy; Culture Control: Sanitation,
protective sprays
Maple - ANSWER Anthracnose (Kabatiella) Diag: Symptoms, Microscopy, Culture
Control: Sanitation, protective sprays
Pear - ANSWER Fireblight (Erwinia) Diag: Symptoms, Microscopy, Culture Control:
Sanitation, blossom sprays
Photinia - ANSWER Fireblight (Erwinia) Diag: Symptoms, Microscopy, Culture Control:
Sanitation
Entomosporium Leaf Spot Diag: Symptoms, Microscopy Control: Sanitation, protective
sprays
Privet - ANSWER Cercospora Leaf Spot Diag: Symptoms, Microscopy, Culture Control:
Sanitation, protective sprays
Rose - ANSWER Black Spot (Diplocarpon) Diag: Symptoms, Microscopy Control:
Sanitation, mulching, protective sprays
Cankers (Fungal) Diag: Symptoms, Microscopy, Culture Control: Sanitation, Protective
sprays
, Crown Gall (Agrobacterium) Diag: Symptoms, Culture Control: Sanitation, avoid
wounding, control root feeding insects, crop rotation Virus Diag: Symptoms Control:
Sanitation
Downy Mildew (Peronospora) Diag: Symptoms, Micrososcopy Control: Sanitation,
protective sprays
Thielaviopsis - ANSWER Black Root Rot Diag: Symptoms, Microscopy, Culture Control:
Sanitation, Protective Drenches
Fusarium - ANSWER Diag: Microscopy, Culture Control: Sanitation, Crop Rotation,
Resistance, Protective Chemical Drenches
Nematodes (11 Genera) - ANSWER Diag: Symptoms, Soil Nematode Analysis Control:
Crop Rotation, Fallow, Resistance, Chemical TreatmentFumigation, Soil Amendment-
Biological
Large Crabgrass - ANSWER -Summer annual
-Germination - late March to early April
-Fibrous root system and roots at lower nodes
-Lower sterns flattened, pale green, with hairy sheaths that form unsightly patches
Goosegrass - ANSWER -Summer annual grass
-Silver crabgrass
-Thrives in compacted soil areas - Germination may be 4 to 6 weeks later than
crabgrass
- Fibrous root system and roots at lower nodes
- Lower sterns strongly flattened and crown is silver-white
- At maturity, 4 or 5 flattened finger-like seed heads produced at end of sterns
Prostate Spurge - ANSWER -Summer annual broad leaf weed
- Prostrate, spreading weed common in waste places
- Late germinating weed (later spring to early summer)
- Leaves and sterns purple to green in color (sometimes spotted)
-Plants have white milky (latex) sap
- Tiny, inconspicuous, pinkish- white flowers are produced and many seeds
Gripeweed - ANSWER -Summer annual broadleaf weed
- Phyllanthus species - Often referred to as "little mimosa"
- Upright growing with strong taproot
- Round capsule at base of each leaf
- Each capsule contains 6 seeds
Annual Lespedeza - ANSWER -Summer annual broadleaf weed
- Japanese clover
- Prostrate, spreading growth habit with strong taproot
