Commercial Disease Controls
The Pennsylvania State University
Cooperative Extension

Parsley

Disease Control

Damping-Off
Apply the following as a soil surface spray immediately after seeding:

mefenoxam -- 1-2 pt Ridomil Gold 4E/A or 2-4 pt Ultra Flourish 2E/A

Bacterial and Fungal Leaf Spots
Do not plant parsley in the same field for at least 2 years, and space successive plantings during the same year as far apart as possible.

Bacterial Leaf Spots
Avoid working in the fields while the foliage is wet to reduce spread. Apply the following and repeat every 7 days.

copper, fixed 2.25 lb 53.8DF/A or OLF, or

Fungal Leaf Spots
Once leafspots are detected in the field, alternate the following every 7 days.

azoxystrobin (Quadris--6.2 - 15.4 oz 2.08F/A or Amistar--2-5 oz 80WDG/A), or
copper, fixed 2.25 lb 53.8DF/A or OLF

Note: Where trade names are used, no discrimination is intended and no endorsement by the Cooperative Extension Service is implied. Information provided is intended for consideration by the user, but is not intended to be a recommendation. Production decisions should be based on consideration of many types of information (scientific, experiential, economic, legal, etc.) available to the user.