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A survey of cereal plant pathologists in each State has shown that stem rust is ranked as potentially the most important foliar disease of wheat in most regions. Other major foliar diseases were stripe rust, flag smut, Septoria tritici blotch and leaf rust. Yellow spot has increased in importance since 1975 with the adoption of stubble retention farming in(More)
OBJECTIVES The San Francisco Fire Department's (SFFD; San Francisco, California USA) Homeless Outreach and Medical Emergency (HOME) Team is the United States' first Emergency Medical Services (EMS)-based outreach effort using a specially trained paramedic to redirect frequent users of EMS to other types of services. The effectiveness of this program at(More)
Thirty-eight of the 61 isolates of bacteria obtained from diseased and healthy sunflower leaves inhibited the germination of conidia and growth of germ-tubes of Alternaria helianthi in vitro. Inhibition included reduced conidial germination, germ-tube swelling causing vesicle formation, excessive germ-tube branching, lysis of germ-tubes, absence of(More)
Humans are exposed daily to low concentrations of many different chemical substances, natural and some man-made. Although many of these substances can be toxic at high levels, typical exposures are far below the effect levels. The responses produced by man-made aromatic hydrocarbon receptor agonists, such as dioxins, polychlorinated dibenzofurans, coplanar(More)
  • J F Brown
  • 1994
New and old kinetic and chromatographic data were used to calculate, for 146 PCB congeners, the relative rates of metabolism by both P4501Aand P4502B-like cytochromes and the relative human accumulations after 70yr dosing [RHA(70) values] in both normal and chloracnegenic persons. These results permitted establishment of structure-activity relationships,(More)
OBJECTIVE To identify the factors that lead to increased use of emergency medical services (EMS) by patients 65 years of age and older in an urban EMS system. METHODS Retrospective, case-control study of frequent EMS use among elderly patients transported during one year in an urban EMS system. Three distinct groups were examined for transports that took(More)
 Slow arbuscular mycorrhizal colonisation is characteristic of a growth disorder of cotton occurring in crops in northern New South Wales, Australia. To determine whether or not slow colonisation is caused by poor survival of mycorrhizal fungi between crops, we examined colonisation of cotton in field crops and in a series of pot bioassays. Cotton roots(More)
The symptoms of a growth disorder of cotton and associated properties of the soil were quantified. Data were collected from 35 sites across two irrigated fields that showed gradients in the severity of early season stunting of cotton. Ordination analysis of soil characteristics distinguished three groups of sites (A, B, and C) which corresponded to patterns(More)