Control of Armillaria root rot in managed coniferous forests.

Shaw, Charles G.; Roth, Lewis F.

doi:10.1111/j.1439-0329.1978.tb01463.x

Cited by 47 publications

(27 citation statements)

References 38 publications

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“…In addition, Armillaria-induced mortality rates are not constant. Mortality rates may continue to increase with age (Shaw and Roth 1980;Reaves et al 1993), but beyond a certain age mortality rates may decline as trees become more resistant. The answer to what is commercially important is not simple and is dependent to a fair degree on chance.…”

Section: Discussionmentioning

confidence: 97%

Early results from field trials using Hypholoma fasciculare to reduce Armillaria ostoyae root disease

Chapman¹,

Xiao²,

Myers³

2004

Can. J. Bot.

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Armillaria ostoyae (Romagn.) Herink. causes serious damage to forest tree species worldwide. In this study, Hypholoma fasciculare (Huds. ex Fr.) Kummer was inoculated, after logging, into areas in south-central British Columbia that had been identified as having high levels of A. ostoyae. Hypholoma fasciculare was successfully established in a variety of different types of trials, as indicated by growth of H. fasciculare mycelium into roots of inoculated stumps and the presence of fruiting bodies on and around stumps. Three to five years after treatment, inoculated plots had biologically and statistically significantly lower levels of mortality attributable to A. ostoyae.Résumé : L'Armillaria ostoyae (Romagn.) Herink. cause de sérieux dommages chez plusieurs essences forestières, un peu partout au monde. L'auteur a inoculé l'Hypholoma fasciculare (Huds. ex Fr.) Kummer., après la récolte forestière, dans des régions du centre-sud de la Colombie-Brittanique où on observe de fortes densités de l'A. ostoyae. Le mycé-lium de l'H. fasciculare a été introduit avec succès suite à un ensemble de différents types d'essais, tel que révélé par la croissance de l'H. fasciculare dans les racines des souches inoculées et la présence de basidiomes sur et autour des souches. De 3 à 5 ans après le traitement, les parcelles inoculées montrent un degré significativement moindre de mortalité attribuable à l'A. ostoyae, au plan statistique aussi bien que biologique.Mots clés : Hypholoma fasciculare, armillaire, maîtrise biologique, débris ligneux.[Traduit par la Rédaction] Chapman et al. 969

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Section: Discussionmentioning

confidence: 97%

Early results from field trials using Hypholoma fasciculare to reduce Armillaria ostoyae root disease

Chapman¹,

Xiao²,

Myers³

2004

Can. J. Bot.

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“…Root removal techniques, for control of armillaria root disease, were first proposed by Brefeld in 1877 (cited by Sokolov 1964), suggested by Barss (1913), and later recommended by Roth (1978, 1980). Reaves et al (1993) reported on one of the areas discussed by Shaw and Roth (1980) that had inoculum removed by bulldozer and rake.…”

Section: Introductionmentioning

confidence: 97%

Inoculation of stumps with Hypholoma fasciculare as a possible means to control armillaria root disease

Chapman¹,

Xiao²

2000

Can. J. Bot.

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Hypholoma fasciculare (Huds. ex Fr.) Kummer was paired with Armillaria ostoyae (Romagn.) Herink in a variety of ways in the laboratory and then it was inoculated onto A. ostoyae infected stumps in the field. The ability of H. fasciuclare colonies to overrun A. ostoyae colonies in culture was confirmed. Hypholoma fasciculare fully colonized discs of tree roots where A. ostoyae was well established, and prevented A. ostoyae from occupying root segments when both fungi were introduced simultaneously. A simple method for inoculating H. fasciculare into stumps is described, and data supporting successful field inoculations are presented. The ability of H. fasciculare to invade freshly killed stumps, even those occupied by Armillaria, is demonstrated, and it is speculated that the ability of this saprophyte to invade fresh stumps is dependent upon its inoculum potential.

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“…These methods are either impractical or ineffective (Redfern, 1971;Morrison, 1976;Shaw & Roth, 1978;Hagle & Shaw, 1991;Turner, 1991;West, 1994;Raziq, 2000). Chemical fungicides, such as Armillatox, are phytotoxic if applied in high concentrations.…”

Section: Introductionmentioning

confidence: 97%

Cultural Techniques for Improvement in Biocontrol Potential of Fungal Antagonists againstArmillariaRoot Rot of Strawberry Plants under Glasshouse Conditions

Raziq

Fox

2004

Biological Agriculture & Horticulture

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Several in vitro and in vivo experiments were conducted to develop an effective technique for culturing potential fungal antagonists (isolates of Trichoderma harzianum, Dactylium dendroides, Chaetomium olivaceum and one unidentified fungus) selected for activity against Armillaria mel/ea. The antagonists were inoculated onto (I) live spawn of the oyster mushroom (Pleurotus ostreatus), (2) extra-moistened or sucrose-enriched mushroom composts containing living or autoclaved mycelia of P. ostreatus or Agaricus bisporus (button mushroom), (3) pasteurized compost with or without A. bisporus mycelium, wheat bran, wheat germ and (4) spent mushroom composts with living mycelia of A. bisporus, P. ostreatus or Lentinus edodes (the Shiitake mushroom). In one experiment, a representative antagonist (isolate Th2 of T. harzianum) was grown together with the A. bisporus mycelium, while in another one, the antagonist was first grown on wheat germ or wheat bran and then on mushroom compost with living mycelium of A. bisporus. Some of the carrier substrates were then added to the roots of potted strawberry plants in the glasshouse to evaluate their effectiveness against the disease. The antagonists failed to grow on the spawn of P. ostreatus even after reinoculations and prolonged incubation. Providing extra moisture or sucrose enrichment also did not improve the growth of Th2 on mushroom composts in the presence of living mycelia of A. bisporus or P. ostreatus. The antagonist, however, grew rapidly and extensively on mushroom compost with autoclaved mycelia, and also on wheat germ and wheat bran. Colonization of the substrates by the antagonist was positively correlated with its effectiveness in the glasshouse studies. Whereas only 33.3% of the inoculated control plants survived in one experiment monitored for 560 days, 100% survival was achieved when Th2 was applied on wheat germ or wheat bran. Growth of the antagonist alone on pasteurized or sterilized compost (without A. bisporus mycelia) and simultaneous growth of the antagonist and mushroom on pasteurized compost did not improve survival over the inoculated controls, but growth over *Corresponding author: fraziqpk@yahoo.co.uk 271 Downloaded by [University of Nebraska, Lincoln] at 14:20 08 October 2014 272 F. RAZIQ AND R.T.V. FOX mushroom compost with the living mycelium resulted in 50% survival rate. C. olivaceum isolate Co was the most effective, resulting in overall survival rate of 83.3% compared with only 8.3% for the inoculated and I 00% for the uninoculated (healthy) controls. This antagonist gave the highest survival rate of 100% on spent mushroom compost with L. edodes. T. harzianum isolate Th23, with 75% survival rate, was the most effective on spent mushroom compost with P. ostreatus, while D. dendroides isolate SP resulted in equal survival rates of 50% on all the three mushroom composts.

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Control of Armillaria root rot in managed coniferous forests.

Cited by 47 publications

References 38 publications

Early results from field trials using Hypholoma fasciculare to reduce Armillaria ostoyae root disease

Early results from field trials using Hypholoma fasciculare to reduce Armillaria ostoyae root disease

Inoculation of stumps with Hypholoma fasciculare as a possible means to control armillaria root disease

Cultural Techniques for Improvement in Biocontrol Potential of Fungal Antagonists againstArmillariaRoot Rot of Strawberry Plants under Glasshouse Conditions

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