The Cooperative continues to actively
address a diverse array of issues related to
the effective use of wood utility poles.
The trials to evaluate the effectiveness of
MITC-Fume are now in their seventh year
and continue to show that methylisothiocyanate
(MITC) levels in MITC-Fume
treatments remain higher than comparable
metham...
The specification, inspection, and remedial treatment of utility poles are addressed. Included are discussions of enhancing specifications for improved performance, techniques for detecting decay and other defects, and chemical treatments available for arresting decay of poles in service.
Previously established field trials of
MTTC-Fume continue to show that this
chemical remains in Douglas-fir and southern
pine poles at fungitoxic levels 5 years after
treatment. In general, increasing dosages
resulted in higher chemical levels in the poles.
All of the MITC-Fume treatments resulted in
higher residual M1TC levels than...
Evaluation of previously established
field trials of internal remedial treatments
continues to verify the excellent long-term
protection afforded by these treatments.
Field trials with gell encapsulated
methylisothiocyanate (MITC) demonstrate
that gelatin does not interfere with
chemical release, nor is addition of
supplemental moisture required for release.
Field trials have been...
Evaluation of previously established
field trials of remedial internal treatments
demonstrates the continued performance of
chioropicrin, Vorlex, and
methylisothiocyanate (MITC). While the
degree of protection afforded by these
treatments has declined with time, residual
fungitoxic levels remain in many tests.
Field trials of gelatin encapsulated MITC
indicate that gelatin had...
Evaluations of previously established field trials indicate that
chioropicrin and Vorlex continue to provide a diminishing level of protection to
Douglas-fir poles. Tests of solid methylisothiocyanate (MITC), now in their
thirteenth year, indicate that this chemical continues to prevent recolonization
of Douglas-fir poles by decay fungi. MITC appears to provide...
Evaluations of previously established field trials indicate that
chioropicrin, and Vorlex continue to provide protection to Douglas-fir poles,
although the degree of protection is diminishing. Reapplication of Vapam 18
years after the initial application eliminated fungi which had recolonized the
poles. Methylisothiocyanate (MITC) continues to protect Douglas-fir poles 12
years...
Evaluations of previously established field trials indicate that
chioropicrin, and Vorlex continue to provide protection to Douglas-fir poles,
although the degree of protection is diminishing. Reapplication of Vapam 18
years after the initial application eliminated fungi which had recolonized the
poles. Methylisothiocyanate (MITC) continues to protect Douglas-fir poles 12
years...
The eighth annual report details continued progress on each of the five
objectives. In this year's report, Objectives II and III from previous
reports have been combined to reflect the similarity of each effort.
Improved fumigants: The previously established field trials continue to
demonstrate the superior performance of both chioropicrin...
This seventh annual report outlines our continued progress on each of six
objectives.
Improved fumigants: We continue to evaluate previously established field
tests, which inlicate that chioropicrin continues to protect Douglas-fir poles
after 17 years and piling after 12 years. Vorlex treated poles are being
gradually recolonized by decay fungi,...
This fifth annual Cooperative Pole Research Program report
outlines our progress in the six project objectives.
Improved Fumigants
Sampling of previously established field tests revealed that
Vorlex and Chloropicrin continued to perform well after 15 years,
while Vapam was slightly less effective. Solid methylisothiocyanate
(MIT) also performed well in the...
After 14 years, chloropicrin, Vapam and Vorlex continue to effectively
control internal decay of pressure-treated Douglas-fir
transmission poles, but 6 years after application of methylisothiocyanate
(MIT) some poles are becoming reinfested by decay fungi
although NIT residues remain high in these poles. The closed-tube
bioassay, developed through our research, is...
ABSTRACT
Improved Fumigants
After 13 years, chioropicrin, methylisothiocyanate (MIT), Vapam, and
Vorlex continue to effectively control internal decay of pressure-treated
Douglas-fir transmission poles. The estimated retreating schedules for
application of these fumigants to treated wood may be as long as 10 years
for Vapam and 15 years for the others....
ABSTRACT
Improved Fumigants
Chioropicrin, Vorlex and Vapam continue to control internal decay of
pressure-treated Douglas-fir poles 12 years after application. Fungitoxic quantities
of chloropicrin are present in the wood as high as 2.4 m (8 feet) above
the groundline. Solid methylisothiocyanate (MIT), which goes directly to a vapor,
is somewhat...
ABSTRACT
Fumigants. Chioropicrin, Vapam and Vorlex continue to control Internal
decay of Douglas-fir poles 11 years after application.
Methylisothiocyanate (MIT), which was melted and poured into holes in
Douglas-fir poles 3-years ago and goes directly from a solid to a gas in the
wood, appears promising In controlling decay fungi....
