Evaluations of emamectin benzoate and propiconazole for protecting individual <i>Pinus contorta</i> from mortality attributed to colonization by <i>Dendroctonus ponderosae</i> and associated fungi

Fettig, Christopher J.; Munson, A. Steven; Grosman, Donald M.; Bush, Parshall B.

doi:10.1002/ps.3612

Cited by 23 publications

(15 citation statements)

References 27 publications

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“…Unfortunately, the effectiveness of some of these direct management approaches (sanitation, insecticide, semiochemicals) does not last more than 2 years, some have a negative effect on the environment (insecticide), and some require higher cost, skills, and labour (sanitation, prescribed fire) to implement [26,[28][29][30]. Thus, with the high intensity of attack, management efforts were eventually shifted to salvage logging (clear cut) operations to capture as much of the economic value of dead timber as possible before the wood deteriorated and may slow the spread of beetles to other areas.…”

Section: Introductionmentioning

confidence: 99%

Aftermath of Mountain Pine Beetle Outbreak in British Columbia: Stand Dynamics, Management Response and Ecosystem Resilience

Dhar

Parrott

Hawkins

2016

Forests

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Abstract:The mountain pine beetle (Dendroctonus ponderosae Hopkins) (MPB) has infested and killed millions of hectares of lodgepole pine (Pinus contorta var. latifolia Engelm) forests in British Columbia, Canada, over the past decade. It is now spreading out of its native range into the Canadian boreal forest, with unknown social, economic and ecological consequences. This review explores the ramifications of the MPB epidemic with respect to mid-term timber supply, forest growth, structure and composition, vegetation diversity, forest fire, climate change, and ecosystem resilience. Research confirms that, in British Columbia, all of these variables are more significantly impacted when salvage logging is used as management response to the outbreak. We conclude that appropriate management in response to MPB is essential to ensuring ecologically resilient future forests and reliable mid-term timber supplies for affected human communities. We highlight knowledge gaps and avenues for research to advance our understanding in support of sustainable post-disturbance forest management policies in British Columbia and elsewhere.

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Section: Introductionmentioning

confidence: 99%

Aftermath of Mountain Pine Beetle Outbreak in British Columbia: Stand Dynamics, Management Response and Ecosystem Resilience

Dhar

Parrott

Hawkins

2016

Forests

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“…On the other hand, some previous studies have stated that pesticide combinations (insecticides and fungicides) are usually more effective than only fungicide or insecticide applications for controlling ambrosia beetles and symbiotic fungi in the field (Fettig et al, 2014;Ranger et al, 2016;Jones et al, 2017). Fettig et al (2014) determined that pesticide combinations [emamectin benzoate (insecticide) and propiconazole (fungicide)] injected with arborjet was more effective than single pesticide treatments for protecting pine trees from bark beetle, Dendroctonus ponderosae Hopkins (Scolytinae). Jones et al (2017) found that the combination of a systemic insecticide (emamectin benzoate), a contact insecticide (bifenthrin), and a fungicide (metconazole) provided the best control against ambrosia beetle, Euwallacea sp.…”

Section: Discussionmentioning

confidence: 99%

“…It was also demonstrated that azoxystrobin, iprodione and thiram inhibited the mycelial growth of the symbiotic fungus at the rates of 50-85%, 65-100% and 75-100% depending on increased doses, respectively. However, in a few studies, some researchers tested the effects of fungicides to symbiotic fungi associated with ambrosia beetles in field conditions (Mayfield et al, 2008;Fettig et al, 2014;Ranger et al, 2016;Jones et al, 2017). Mayfield et al (2008) found that propiconazole, which was enjected into redbay (Persea borbonia) trees, inhibited the growth of Raffaelea sp.…”

Section: Discussionmentioning

confidence: 99%

Fındık bahçelerinde kullanılan bazı fungisitlerin Anisandrus dispar Fabricius (Coleoptera: Curculionidae: Scolytinae) ile simbiyotik ilişkili Ambrosiella hartigii Batra’ya karşı laboratuvar şartlarında etkinliklerinin belirlenmesi

Erper¹,

Kushiyev²,

Yildirim³

et al. 2019

Anadolu Journal of Agricultural Sciences

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Anisandrus dispar Fabricius (Coleoptera: Curculionidae: Scolytinae) cultivate symbiotic fungus Ambrosiella hartigii Batra in the galleries found in sapwood of host trees for feeding. Therefore, controlling the symbiotic fungus means depriving A. dispar of a source of food. In the study, the efficacy of five doses (0.25x, 0.5x, 1.0x, 2.0x and 4.0x; where x is the field rate recommended by the manufacturer) of five fungicides including active ingredients of boscalid+kresoxim methyl, fluopyram+tebuconazole, penconazole, sulphur and tetraconazole used in hazelnut orchards against powdery mildew caused by Erysiphe corylacearum was evaluated against A. hartigii (TR-Ah-06 isolate) under laboratory conditions. The results of the study showed that all doses of the fungicides significantly inhibited the mycelial growth of A. hartigii when compared to the control (P<0.05). Among them, fluopyram+tebuconazole, penconazole and tetraconazole even at the lowest dose completely inhibited the mycelial growth of the fungus. However, the mycelial growth was reduced at the rates of 29.56-100% depending on the increasing doses of boscalid+kresoxim methyl. Sulphur inhibited the mycelial growth of A. hartigii at the rates of 78.57-100% depending on the increasing doses. In addition, the ED 50 , MIC and MFC values of fluopyram+tebuconazole, penconazole and tetraconazole were determined to be lower even than the 0.25x, which was the lowest dose at the experiment. The results showed that the fungicides, especially fluopyram+tebuconazole, penconazole and tetraconazole were effective against A. hartigii.

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“…In spite of significant advancement in MPB management, none of this knowledge can solely mitigate the problem and management still depends on sanitation harvesting to control infestations by removing infested trees, use of prescribe fire, insecticides (MSMA), semiochemicals, or pheromones used on trap trees (Coops et al 2008;Fettig et al 2014;. Unfortunately, the effectiveness of some of these direct management approaches D r a f t (sanitation, insecticide, semiochemicals) won't last more than 2 years, some have a negative effect on the environment (insecticide), and some require higher cost, skills, and labour (sanitation, prescribed fire) to implement (Fettig et al 2007;Coops et al 2008;Wulder 2009;Fettig et al 2013b;Gillette et al 2014;Progar et al 2014). On the other hand, some researchers suggest indirect management or pre-emptive logging in advance of beetle infestation, such as thinning from below, tree crown thinning, and selection thinning treatments (Dahlsten and Rowney 1983;Mitchell et al1983;Fettig et al 2007).…”

Section: Management Of Mpb Outbreaksmentioning

confidence: 99%

Consequences of mountain pine beetle outbreak on forest ecosystem services in western Canada

2016

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After affecting millions of hectares of pine forests in western Canada, the mountain pine beetle (MPB; Dendroctonous ponderosae Hopkins) is spreading out of its native range and into Canada’s boreal forest. Impacts of outbreaks can be environmental, economic, and social, and an ecosystem services (ES) viewpoint provides a useful perspective for an integrated approach to assessing these impacts and may help to identify how possible management strategies could minimize these impacts. In this regards, a comprehensive overview of the ecosystem functions and socioeconomic factors that have been impacted by the current outbreaks in western Canada was carried out to facilitate a more general ES assessment. In addition to timber production, current MPB outbreaks have negative effects on provisioning services (water supply and food production) and aesthetic cultural services, while effects on regulating services (carbon and forest fire) are still in debate. Among the supporting services, nutrient cycling and aquatic habitat showed short- and long-term negative effects, while terrestrial habitat showed a mostly positive response. The overall impact on ES may be more severe if salvage logging is practiced as a post-MPB forest management strategy. The outcomes of this study may help to identify areas of greatest socioecological vulnerability to MPB and identify knowledge gaps and avenues for research to advance the ES framework for MPB outbreak management.

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Evaluations of emamectin benzoate and propiconazole for protecting individual Pinus contorta from mortality attributed to colonization by Dendroctonus ponderosae and associated fungi

Cited by 23 publications

References 27 publications

Aftermath of Mountain Pine Beetle Outbreak in British Columbia: Stand Dynamics, Management Response and Ecosystem Resilience

Aftermath of Mountain Pine Beetle Outbreak in British Columbia: Stand Dynamics, Management Response and Ecosystem Resilience

Fındık bahçelerinde kullanılan bazı fungisitlerin Anisandrus dispar Fabricius (Coleoptera: Curculionidae: Scolytinae) ile simbiyotik ilişkili Ambrosiella hartigii Batra’ya karşı laboratuvar şartlarında etkinliklerinin belirlenmesi

Consequences of mountain pine beetle outbreak on forest ecosystem services in western Canada

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