In vitro evaluation of wood preservatives to prevent dispersal of pitch canker pathogen, Fusarium circinatum.

Serrano Y., Elvira-Recuenco M., Troya M.T., Raposo R. (2014) - In vitro evaluation of wood preservatives to prevent dispersal of pitch canker pathogen, Fusarium circinatum. - Journal of Phytopathology

Fusarium circinatum, the causal agent of pitch canker disease on pines, can
be disseminated by wood produced in infested areas. The purpose of the
study was to evaluate the effect of wood preservatives, commonly used
against sapstain and wood-decay fungi, on growth and sporulation of
Fusarium circinatum. Seven active ingredients of antisapstain and antiwood-
decay preservatives were evaluated by their inhibition of mycelial
growth. Propiconazole, tebuconazole, and 3-iodo-2-propinyl butyl carbamate
(IPBC) were effective against F. circinatum, whereas hydroxycarbonate
of cooper was not. An assay was also conducted to evaluate the
efficacy of three commercial antisapstain and two anti-wood-decay preservatives
on Pinus radiata sapwood blocks that were previously inoculated
with Fusarium circinatum. The product with the best efficacy was an
antidecay preservative composed of tebuconazole, propiconazole, and dichlofluanid.
None of the antisapstain preservatives tested was effective
even though they contained fungicidal ingredients. Effects of dosage,
product application, and formulation on the efficacy of these preservatives
are discussed.

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