Keith M. Harrower

  • Citations Per Year
Learn More
Some microfungi are known to be opportunistic human pathogens, and there is a body of scientific opinion that one of their routes of infection may be water aerosols. Others have been implicated as causative agents of odours and off-tastes in drinking water. This study was undertaken to investigate three potential sources of microfungi in a treated,(More)
Microfungi were recovered from all parts of a municipal water distribution system in sub-tropical Australia even though virtually no colony-forming units were recovered from the treated water as it left the treatment plant. A study was then undertaken to determine the potential sources of the microfungal population in the distribution system. Observation of(More)
Drinking water quality is usually determined by its pathogenic bacterial content. However, the potential of water-borne spores as a source of nosocomial fungal infection is increasingly being recognised. This study into the incidence of microfungal contaminants in a typical Australian municipal water supply was carried out over an 18 month period.(More)
Microbially enhanced compost extracts ('compost tea') are being used in commercial agriculture as a source of nutrients and for their perceived benefit to soil microbiology, including plant disease suppression. Rumen content material is a waste of cattle abattoirs, which can be value-added by conversion to compost and 'compost tea'. A system for compost(More)
A comparative study was performed on compost extracts prepared from cattle rumen content composted for three and nine months, nine month old compost inoculated with a Nutri-Life 4/20™ inoculum, and two commercial preparations (LivingSoil™ and Nutri-Life 4/20™), all incubated for 48h. Nutri-Life 4/20™ had the highest concentrations of NO(3)(-)-N and K(+)-K,(More)
A range of orthodontic instruments was artificially inoculated with a mixed culture of representatives of the oral microflora and a marker bacterium and subjected to dry heat sterilization using a glass bead sterilizer. The shortest time which would guarantee total sterilization of the functional parts of the instruments was thirty seconds.
RESULTS AND DISCUSSION Neither P. cactorum nor P. cinnamomi were isolated during the survey. However all the pears collected bore lesions and 75% were infected with P. cryptogea Pethyb. et Laft. sensu Bumbieris (1). This species occurred at every sampling site between Murchison and Cobram, including the inlet and outlet channels of the Waranga Reservoir.(More)
Figure 2 The effect of different concentrations of cirrus extract on the germination and germ tube elongation of L. nodorum pycnidiospores. • • Germinct ion tion of the water, during which each batch of smears was incubated at 20°C enclosed in perspex boxes containing damp cotton wool to prevent desiccation, the percentage of germinated spores was assessed(More)
Physico-chemical and microbiological investigations were carried out on rumen content material composted for nine months, fresh vermicasts (obtained after passing the same compost through the guts of a mixture of three species of earthworms: Eisenia fetida, Lumbricus rubellus and Perionyx excavates) and microbially enhanced extracts derived from rumen(More)
Early in April 1976, small sunflower plants showing symptoms of rust infection were submitted for identification from the Biloela district in central Queensland. The affected plants were in a parental line of an experimental hybrid resistant to Puccinia helianthi Schw. Pustules formed on the R line, while on the A line only chlorotic spots up to about 3mm(More)