Needle cast - Ask Extension
I have needle cast on several of my pine trees. Do I spray at the bottom of the pine trees with fungicide application or do I spray the bottom of the ...
Knowledgebase
Needle cast #865766
Asked April 24, 2024, 3:18 PM EDT
I have needle cast on several of my pine trees. Do I spray at the bottom of the pine trees with fungicide application or do I spray the bottom of the braches with the fungicide?
Blue Earth County Minnesota
Expert Response
Apply the fungicide according to product label instructions. Thoroughly cover all needles.
Here are general recommendations from West Virginia University Extension:
Prune severely infected limbs before initiating a two-consecutive-year spray program that includes three timely applications of fungicides. The first application should be made at bud break in the early spring when the needles are half grown. Make the second application within four to six weeks of the first, and then make the third application in late spring. Several chlorothalonil-based treatments are approved to controlRhizosphaera, including Daconil 2787, Bravo, and Terranil 90. Bordeaux mix and other copper fungicides may also be effective.
This publication and video may also be of interest: https://yardandgarden.extension.iastate.edu/encyclopedia/rhizosphaera-needle-cast
Here are general recommendations from West Virginia University Extension:
Prune severely infected limbs before initiating a two-consecutive-year spray program that includes three timely applications of fungicides. The first application should be made at bud break in the early spring when the needles are half grown. Make the second application within four to six weeks of the first, and then make the third application in late spring. Several chlorothalonil-based treatments are approved to controlRhizosphaera, including Daconil 2787, Bravo, and Terranil 90. Bordeaux mix and other copper fungicides may also be effective.
This publication and video may also be of interest: https://yardandgarden.extension.iastate.edu/encyclopedia/rhizosphaera-needle-cast
