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  • 1
    Electronic Resource
    Electronic Resource
    Long-term control of Phytophthora diseases of cocoa using trunk-injected phosphonate (1994)
    Oxford, UK : Blackwell Publishing Ltd
    Plant pathology 43 (1994), S. 0 
    Details
    ISSN: 1365-3059
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Pod rot and stem canker, caused by Phytophthora palmivora, are serious diseases of cocoa causing pod losses of up to 63% and the death of up to 10% of trees annually on Kar Kar Island. Papua New Guinea. Trials were conducted on commercial cocoa plantations to compare the effectiveness of potassium phosphonate when applied as trunk injections, trunk paints and foliar sprays, and trunk injections of Aliette CA and of Ridomil 250EC, with conventional Ridomil-based spray programmes. The results show that, in trials conducted over 5 years, injections of potassium phosphonate give the highest healthy pod yield and lowest incidence of Phytophthora pod rot and stem canker when compared with Ridomil-based spray programmes or trunk injections of Ridomil 250EC or Aliette CA. The increase in ripe healthy pod yields was due to both pod rot and stem canker control. The level of control is independent of the seasonal timing of injection. Optimum control was achieved with annual injections of 15 g a. i. per tree, and varied with tree size and disease severity. Injections of phosphonate will, under the range of conditions found in our trials. provide the most cost-effective control of Phytophthora diseases.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-3059.1994.tb01581.x
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  • 2
    Electronic Resource
    Electronic Resource
    Residential characteristics predict changes in Der p 1, Fel d 1 and ergosterol but not fungi over time (2003)
    Oxford, UK : Blackwell Science Ltd
    Clinical & experimental allergy 33 (2003), S. 0 
    Details
    ISSN: 1365-2222
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Background Allergen and fungal exposures are important risk factors for asthma. We conducted a longitudinal analysis of allergen levels in Melbourne homes between 1996 and 1998 to examine the effects of changing residential characteristics on allergen and fungal levels. We also examined the changes in levels of indoor allergens.Methods The subjects were participants in the European Community Respiratory Health Survey (ECRHS) in Melbourne. In 1996, 485 subjects participated in a follow-up study, which involved both home and laboratory visits. Dust and air samples were collected from participants' bedrooms and a validated residential questionnaire was administered. In 1998, 360 participants underwent further follow-up. House dust mite (Der p 1) and cat allergens (Fel d 1) and ergosterol were measured in dust.Results We observed moderate within home correlations between 1996 and 1998 in floor Der p 1 (intraclass correlation ICC=0.48), bed Der p 1 (ICC=0.61), Fel d 1 (κ=0.53) and ergosterol (ICC=0.28) levels. We found that the floor Der p 1 levels decreased from 1996 to 1998 in the homes of participants who moved to an attached home, moved their bedrooms to the first floor, removed fitted carpet or central heating. Replacing or vacuuming the mattress more than twice per year reduced levels of Der p 1 in the bed. Ergosterol levels were reduced by removing visible mould and fitted carpet.Conclusions These findings provide evidence to support current advice with regard to allergen avoidance in patients with dust mite and fungal allergies.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1046/j.1365-2222.2003.01747.x
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  • 3
    Electronic Resource
    Electronic Resource
    Mouldy houses influence symptoms of asthma among atopic individuals (2002)
    Oxford, UK : Blackwell Science Ltd
    Clinical & experimental allergy 32 (2002), S. 0 
    Details
    ISSN: 1365-2222
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Background The influence of current levels of indoor fungi on asthma is a controversial issue that needs to be resolved in order to advise patients appropriately.Objective To assess the seasonal variation in indoor fungal levels and the impact of these levels on asthma among mould-sensitized individuals.Methods Thirty-five young adults with current asthma and sensitization to fungi were visited four times over 1 year. At each home visit a questionnaire was administered and samples of dust and air were collected. Participants also recorded information on symptoms, peak expiratory flows (PEF) and medication use. Dust samples were analysed for house dust mite allergen (Der p 1) and total fungal biomass (ergosterol). Total and genus-specific fungal propagules were identified in air samples. Seasonal variation in allergen levels and significant independent effects of fungal levels on peak flow variability (PFV) were identified by repeated measures analysis of variance.Results Significant seasonal variations were observed in viable airborne fungi, ergosterol levels in the floor dust and PFV. PFV correlated significantly with symptom scores and the dose of reliever medication. PFV was also significantly associated with smoking and visible mould. The association between visible mould and PFV was independent of season, smoking and the dose of reliever medication. However, there was no association between total fungi, specific fungi or ergosterol and PFV. Der p 1 levels had no significant influence on asthma, even in HDM-sensitized individuals.Conclusions Mouldy homes adversely influence asthma in asthmatics sensitized to fungi.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1046/j.1365-2222.2002.01371.x
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  • 4
    Electronic Resource
    Electronic Resource
    Characterisation ofFusarium oxysporum isolated from carnation in Australia based on pathogenicity, vegetative compatibility and random amplified polymorphic DNA (RAPD) assay (1996)
    Springer
    European journal of plant pathology 102 (1996), S. 451-457 
    Details
    ISSN: 1573-8469
    Keywords: Dianthus caryophyllus ; Fusarium wilt
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract Isolates ofF. oxysporum collected from symptomless carnation cuttings from Australian carnation growers properties, together with isolates from national collections, were screened for pathogenicity and grouped according to vegetative compatibility and random amplified polymorphic DNA (RAPD) patterns. The collection of 82 Australian isolates sorted into 23 different vegetative compatibility groups (VCGs). Of 69 isolates tested for pathogenicity, 24 were pathogenic to carnations, while the remaining 45 were non-pathogenic. All pathogenic isolates were within two VCGs, one of which was also compatible with an isolate obtained from an international culture collection, and which is known to represent VCG 0021 and race 2. Race status of the two pathogenic VCGs remains unknown. The RAPD assay revealed distinct DNA banding patterns which could distinguish pathogenic from non-pathogenic isolates as well as differentiate between isolates from the two pathogenic VCGs.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01877139
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  • 5
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    Detrital zircons from the Nanaimo basin, Vancouver Island, British Columbia: an independent test of Late Cretaceous to Cenozoic northward translation (2017)
    Wiley-Blackwell
    In: Tectonics
    Details
    Publication Date: 2017-04-15
    Description: The development of the Cordilleran orogen of western North American is disputed despite a century of study. Paleomagnetic observations require large-scale dextral displacements of crustal fragments along the western margin of North America, from low latitudes to moderate latitudes during the Cretaceous-Paleogene. A lack of corroborating geological evidence for large-scale (〉1500 km) displacements has prevented the widespread integration of paleomagnetic data into most contemporary tectonic models for the margin. Here we use detrital zircons from the Nanaimo basin, southwestern British Columbia, Canada as an independent test of its Late Cretaceous paleogeographic position. We compare 4310 detrital zircon U/Pb dates from 16 samples to potential source areas in western North America to test hypothesized northern and southern Late Cretaceous paleogeographic positions. Our detrital zircon data suggest that sediment in the Nanaimo basin derives from either a geographically restricted portion of the Belt-Purcell basin or from the Mojave-Sonoran region of south-western North America. A paleogeographic position for the basin adjacent to the Mojave-Sonoran region is preferred as it is consistent with the paleomagnetic results but further geological, isotopic or geophysical data is required to rule out a Belt-Purcell source.
    Print ISSN: 0278-7407
    Electronic ISSN: 1944-9194
    Topics: Geosciences
    Published by Wiley-Blackwell on behalf of American Geophysical Union (AGU).
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