Fungicide efficacy in prevention of root rot incited by Phytophthora cactorum and phytophthora drechsleri in fraser fir seedlings

Benjamin K. Hoover, Ricky M. Bates

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

The most serious disease problem in fraser fir (Abies fraseri) Christmas tree production is phytophthora root rot (PRR). The efficacies of six fungicide treatments in preventing PRR incited by Phytophthora cactorum and P. drechsleri in 2-year-old fraser fir seedlings were evaluated in 2010 and 2011 in central Pennsylvania. The study examined five fungicide drench treatments [dimethomorph, fosetyl-aluminum (fosetyl-Al), hydrogen dioxide, mefenoxam, propamocarb hydrochloride] and one soil spray treatment (mefenoxam) in raised planting boxes. Dimethomorph applied on 14-day intervals prevented foliar disease symptoms and mortality in fraser fir seedlings exposed to either P. cactorum or P. drechsleri. One-time application of fosetyl-Al or mefenoxam were effective at times in preventing foliar disease symptoms and mortality in fraser fir seedlings exposed to P. drechsleri but were not as effective against P. cactorum.

Original languageEnglish (US)
Pages (from-to)470-475
Number of pages6
JournalHortTechnology
Volume22
Issue number4
StatePublished - Jul 1 2012

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Phytophthora drechsleri
Abies fraseri
Phytophthora cactorum
root rot
fosetyl
fungicides
seedlings
foliar diseases
Phytophthora
box planting
signs and symptoms (plants)
Christmas trees
hydrogen
aluminum
mefenoxam
soil

All Science Journal Classification (ASJC) codes

  • Horticulture

Cite this

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Fungicide efficacy in prevention of root rot incited by Phytophthora cactorum and phytophthora drechsleri in fraser fir seedlings. / Hoover, Benjamin K.; Bates, Ricky M.

In: HortTechnology, Vol. 22, No. 4, 01.07.2012, p. 470-475.

Research output: Contribution to journalArticle

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