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Gray Leaf Spot Fungicide
Cercospora zeae-maydis Fungicide
Description of Gray Leaf Spot (Cercospora zeae-maydis):
Gray leaf spot is somewhat self-descriptive, but it appears as spots that are round to oval and are tan in the middle with a dark brown border. When the humidity is very high, the spots turn gray and are profusely fuzzy with spores. It is often confused with Pythium blight in perennial ryegrass and tall fescue.
CertainLabel™
Gray Leaf Spot Optimized Control Options Finder
Legend:
Control
Suppression
No Control
According to the manufacturer approved labels: The following 8 fungicides, applied at the listed application rates, will control Gray Leaf Spot.
Broadcast Treatment
per
Label Rate:
2 - 4 lbs per 1,000 sqft
Cost Effectiveness:
Covers 2500 - 5000 square feet
at a cost of
$3.89 - $7.79 per 1,000 sqft
at a cost of
$3.89 - $7.79 per 1,000 sqft
Blanket Treatment
Application Interval:
14 days
per
Label Rate:
1 - 2 fluid ounces per 1,000 sqft
Cost Effectiveness:
Covers 16000 - 32000 square feet
at a cost of
$1.25 - $2.50 per 1,000 sqft
at a cost of
$1.25 - $2.50 per 1,000 sqft
Instructions:
Apply when conditions are favorable for disease development. If using the 1 fl. oz. per 1000 sq. ft. rate, tank mix with a registered contact fungicide at the label rate.
Blanket Treatment
Application Interval:
14 days
per
Label Rate:
1.2 fluid ounces per 1,000 sqft
Cost Effectiveness:
Covers 13333 square feet
at a cost of
$3.00 per 1,000 sqft
at a cost of
$3.00 per 1,000 sqft
Instructions:
Apply when conditions are favorable for disease development.
Note: This rate is for residential turfgrass.
Broadcast Treatment
Application Interval:
14 - 28 days
per
Label Rate:
2 - 4 lbs per 1,000 sqft
Cost Effectiveness:
Covers 7500 - 15000 square feet
at a cost of
$5.34 - $10.68 per 1,000 sqft
at a cost of
$5.34 - $10.68 per 1,000 sqft
Instructions:
Begin applications before disease is present and continue applications while conditions are favorable for disease development.
Blanket Treatment
Application Interval:
14 days
per
Label Rate:
4 - 6 fluid ounces per 1,000 sqft
Cost Effectiveness:
Covers 5333 - 8000 square feet
at a cost of
$6.44 - $9.67 per 1,000 sqft
at a cost of
$6.44 - $9.67 per 1,000 sqft
Instructions:
Apply preventative application before expected period of diseasedevelopment. Continue applications at 14 day intervals.
Broadcast Treatment
Application Interval:
14 days
per
Label Rate:
4 lbs per 1,000 sqft
Cost Effectiveness:
Covers 5000 square feet
at a cost of
$9.65 per 1,000 sqft
at a cost of
$9.65 per 1,000 sqft
Instructions:
Apply prior to snow cover.
Broadcast Treatment
Application Interval:
14 - 28 days
per
Label Rate:
3 lbs per 1,000 sqft
Cost Effectiveness:
Covers 5000 square feet
at a cost of
$11.99 per 1,000 sqft
at a cost of
$11.99 per 1,000 sqft
Instructions:
Use preventively. Begin applications when conditions are favorable for fungal infection, prior to disease symptom development.
Broadcast Treatment
Application Interval:
14 days
per
Label Rate:
6 - 9 lbs per 1,000 sqft
Cost Effectiveness:
Covers 3333 - 5000 square feet
at a cost of
$14.39 - $21.58 per 1,000 sqft
at a cost of
$14.39 - $21.58 per 1,000 sqft
Instructions:
Apply preventative application before expected period of disease development. Continue applications at 14 day intervals as needed.