Attachment 6 Dwarf Mistletoe Guide.pdf
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- Solicitation number
- 127EAS23Q0036
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Department of Agriculture Forest Service
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Dwarf Mistletoe Guide
INSTRUCTIONS Example:
STEP 1. Divide live crown into thirds
STEP 2. Rate each third separately. Each third should be given a rating of 0, 1 or 2 as described below.
(0) No visible infections
(1) Light infection (1/2 or less of the total number of branches in the crown third are infected)
(2) Heavy infection (more than 1/2 of total number of branches in the crown third are infected).
STEP 3. Finally, add ratings of thirds to obtain rating for total tree.
The dwarf mistletoe rating for the above tree is 3 (top (0) + middle (1) + bottom (2))
Photographs
Mistletoe on branch Witches’ brooms Mistletoe stem canker
Top 1/3rd has no visible infection, rating is 0
Middle 1/3rd is lightly infected, rating is 1
Bottom 1/3rd is heavily infected, rating is 2
File details come from the government source that posted it. Updated .