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    Pesticides alternative strategy for Removal of Fungus and Insect (Amylostereum areolatum, Sirex wasp)
    Author(s):
    Publication Year: 2014
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    Subject Keywords: Pesticides Chemicals
    Regions: Australia and New Zealand, Oceania
    Countries: New Zealand
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    Alternative Strategy: A. areolatum is a basidiomycete that causes a white rot of a broad range of conifers. Its invasiveness arises from a symbiotic association with wood wasps of the genus Sirex. Control strategies therefore need to address both the fungus and they symbiotic wasp.The tylenchid nematode Beddingia (= Deladenus) siricidicola, discovered in New Zealand and later found in Europe lives in and feeds on A. areolatum colonies in trees and also infects Sirex larvae and female wasps. Because it has a separate cycle of growth and reproduction based on fungus feeding, it can cause a greater reduction in wasp numbers. The nematode can be raised in cultures of the fungus and injected into trees for effective control of the wasp (Bedding, 1995). B. siricidicola is currently under evaluation for use in the USA (Williams and Mastro, 2009.
    Alternative Method: Removal
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    Alternative Trial: No
    Alternative Type: Specific strategy - Biocontrol
    Pest Type: Fungus, Insect
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    Pesticides alternative strategy for Removal of Weed (Pueraria montana, Kudzu)
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    Publication Year: 2014
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    Subject Keywords: Pesticides Chemicals
    Regions: Northern America
    Countries: United States of America
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    Alternative Strategy: Boyette et al. (2001,2002) tested Myrothecium verrucaria, as a biological control agent for kudzu. The USDA-ARS biological control team showed that M. verrucaria applied at a high spore rate of 2x108 conidia/ml caused greater than 90% mortality of both young and old kudzu seedlings. They also determined that the disease severity increased with an increase in temperature to 30-40°C, suggesting that this mycoherbicide could be very active in the summer in the southern USA. The virulence of M. verrucaria against kudzu was increased in formulation with an organosilicon surfactant to cause 100% mortality of kudzu in the greenhouse and in the field 2 weeks after spraying at a rate of 2x107. As fungal activity requires the surfactant, the risk of the fungus spreading beyond the sprayed field is minimal.
    Alternative Method: Removal
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    Alternative Trial: No
    Alternative Type: Specific strategy - Biocontrol
    Pest Type: Weed
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    Pesticides alternative strategy for Reduction of Fungus (Heterobasidion annosum)
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    Publication Year: 2014
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    Subject Keywords: Pesticides Chemicals
    Regions: Northern Europe, Europe
    Countries: United Kingdom
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    Alternative Strategy: The adoption by the Forestry Commission in the 1960s of the non-pathogenic wood-rotting fungus Phlebiopsis (previously Peniophora) gigantea, now used under the name 'PG Suspension', for the treatment of pine stumps to prevent colonisation by Heterobasidion annosum, was a pioneering move that has been followed by other countries
    Alternative Method: Reduction
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    Alternative Trial: No
    Alternative Type: Specific strategy - Biocontrol
    Pest Type: Fungus
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    Pesticides alternative strategy for Removal of Insect (Agrilus planipennis, Emerald ash borer)
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    Publication Year: 2014
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    Subject Keywords: Pesticides Chemicals
    Alternative Strategy: The fungus Beauveria bassiana has been found to be highly virulent against A. planipennis, and demonstrated lethal effects in greenhouse and field trials when applied on emerging adults and larvae (Liu and Bauer, 2008a). Foliar and trunk applications in the field were also able to significantly reduce populations of A. planipennis both at newly colonised ash sites and at sites with established pest populations (Liu and Bauer, 2008b).
    Alternative Method: Removal
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    Alternative Trial: No
    Alternative Type: Specific strategy - Biocontrol
    Pest Type: Insect
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    Pesticides alternative strategy for Removal of Insect (Hylobius abietis, Large pine weevil)
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    Publication Year: 2014
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    Subject Keywords: Pesticides Chemicals
    Regions: Northern Europe, Europe
    Countries: Ireland
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    Alternative Strategy: Insect-killing nematodes have been used for decades in horticulture, but their use in forestry is relatively new. In small-scale trials, when nematodes were applied to stumps 12-24 months after felling, the number of adult H. abietis emerging from nematode-treated stumps was significantly reduced (Dillon et al., 2006, 2007). Based on those, and other trials, the recommended rate of application for pine weevil control is 3.5 million nematodes per stump, applied in 0.5 L of water.
    Alternative Method: Removal
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    Alternative Trial: Yes
    Alternative Type: Specific strategy - Biocontrol
    Pest Type: Insect
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    Pesticides alternative strategy for Removal of Fungus (Cronartium flaccidum, Scots pine blister rust)
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    Publication Year: 2014
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    Subject Keywords: Pesticides Chemicals
    Regions: Northern America
    Countries: United States of America
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    Alternative Strategy: The hyperparasite Cladosporium tenuissimum is proposed by Moricca et al. (2001) as a possible means of control for stem rust. The aeciospores are directly penetrated and parasitized by the conidial fungus. Tests on two-year-old pine seedlings in the greenhouse showed that treatment with the parasite prevented new rust infections by an average of 42%.
    Alternative Method: Removal
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    Alternative Trial: No
    Alternative Type: Specific strategy - Biocontrol
    Pest Type: Fungus
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    Pesticides alternative strategy for Removal of Insect (Sirex noctilio, Sirex wasp)
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    Publication Year: 2014
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    Subject Keywords: Pesticides Chemicals
    Regions: Australia and New Zealand, Oceania
    Countries: Australia
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    Alternative Strategy: Biological Control - A suite of specific predatory insects, Rhyssa, Megarhyssa and Ibalia
    Alternative Method: Removal
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    Alternative Trial: No
    Alternative Type: Specific strategy - Biocontrol
    Pest Type: Insect
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    Pesticides alternative strategy for Reduction of Insect (Spruce budworm, Gypsy moth, Nun moth, Pine beauty moth, European pine sawfly)
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    Publication Year: 2014
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    Subject Keywords: Pesticides Chemicals
    Regions: Northern Europe, Europe
    Countries: United Kingdom
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    Alternative Strategy: Use of pathogenic organisms, such as bacteria, fungi and viruses, both directly within spray programmes and indirectly by manipulating populations of the pathogen, can result in regulation of pest populations with little or no impact on non-target organisms. There are few examples of microbial pesticides currently approved for use in British forestry. However, the bacterial agent Bacillus thuringiensis has been used successfully against many of the most serious lepidopteran defoliators globally. Particular success has been achieved against spruce budworm in North America and against gypsy moth (Lymantria dispar) and nun moth (Lymantria monacha) in western and central Europe. Viral agents offer the highest levels of specificity and are often instrumental in the natural decline of populations of forest insects, many of which are pests. The potential use of baculoviruses against pine beauty moth (Panolis flammea) is described under the specific examples section (page 31). Successful control of European pine sawfly (Neodiprion sertifer) in young pine plantations was achieved with its specific baculovirus, registered as Virox, but this effective and selective control agent is no longer available since the registration has lapsed, due to the demise of the company distributing the virus.
    Alternative Method: Reduction
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    Alternative Trial: No
    Alternative Type: Specific strategy - Biocontrol
    Pest Type: Insect
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    Pesticides alternative strategy for Removal of Insect (Sirex noctilio, Sirex wasp)
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    Publication Year: 2014
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    Subject Keywords: Pesticides Chemicals
    Regions: Australia and New Zealand, Oceania
    Countries: Australia
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    Alternative Strategy: Biological Control - Establish trap trees to attack sirex and aid the distribution of a specific nematode
    Alternative Method: Removal
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    Alternative Trial: No
    Alternative Type: Specific strategy - Biocontrol
    Pest Type: Insect
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    Pesticides alternative strategy for Removal of Insect (Dendroctonus micans, Great spruce bark beetle)
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    Publication Year: 2014
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    Subject Keywords: Pesticides Chemicals
    Regions: Northern Europe, Europe
    Countries: United Kingdom
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    Alternative Strategy: Another successful example of biological control has been the rearing and release of the imported predatory beetle Rhizophagus grandis to control the great spruce bark beetle, Dendroctonus micans.
    Alternative Method: Removal
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    Alternative Trial: No
    Alternative Type: Specific strategy - Biocontrol
    Pest Type: Insect
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