Description of Crown Rot (Phytophthora):
Crown rot is a disease caused by a fungus that favors heavy soils and wet conditions. This particular kind of rot is exacerbated by drought, heat, and over-application of high-nitrogen fertilizers.
CertainLabel™
Crown Rot Optimized Control Options Finder
Legend:
Control
Suppression
No Control
According to the manufacturer approved labels: The following 3 fungicides, applied at the listed application rates, will control Crown Rot.
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.
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 when disease first appears and make applications at 14 day intervals as needed. Rotations and/or tank mix combinations with chlorothalonil, iprodione,or mancozeb (Protect) are recommended under severe conditions.
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 when conditions are favorable for disease development. For crown rot,
water in with 3 to 4 gallons of water per 1,000 sq. ft. to increase penetration to
crown and roots.