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environmental conditions

Listing 1 - 10 from 1000 for environmental conditions

Plant Pathology Glossary
... cells and tissues that results from continuous irritation by a pathogenic agent or environmental factor which leads to the development of symptoms; - abnormal functioning of physiological ... of a compact mass of hyphae and capable of surviving under unfavourable environmental conditions. Under favourable conditions the sclerotium can produces sexual or asexual fruiting bodies. Secondary Inoculum ...
bugs.bio.usyd.edu.au

Plant Pathology: Infection Process: Disease Development
... important in determining its ability to infect resistant hosts or to survive changed environmental conditions. Adaptability is determined by the pathogen's genetic flexibility and reproductive efficiency. ... against a particular plant will generally not cause serious disease unless the environmental conditions are favourable. This includes the aerial environment and the soil (edaphic) environment. ...
bugs.bio.usyd.edu.au

Plant Pathology: Disease Management: Biological Control
... fungus by another (hyperparasitism or mycoparasitism) is well documented and is affected by environmental factors, including nutrient availability. Formulations of some parasitic species of fungi are ... efficacy under the range of environmental conditions likely to occur in the field. This problem can only be overcome by better understanding the environmental parameters that limit biological control. ...
bugs.bio.usyd.edu.au

Grifola frondosa, the hen of the woods, sheepshead or maitake-- Tom Volk's Fungus of the Month for November 2006
... have to go at the right time of year, and the environmental conditions also have to be correct. You can usually go back ... dies, probably from a combination of the Grifola infection and environmental stresses such as drought and wind. You can sometimes see ... pretty efficient process, once the grower learns to provide the right conditions for growth and fruiting. Other wood decay fungi can also ...
botit.botany.wisc.edu

Mycology - Growth and Development - Introduction
... Changes Over Time Summary Questions Growth of Hyphae and Development of Fungi Introduction Growth Phases Environmental Conditions Sporulation Summary Questions Formation of Complex Structures Introduction Linear Organs 3-Dimensional Organs Summary Questions ...
bugs.bio.usyd.edu.au

Mycology - Reproduction and Dispersal - Introduction
... a tiny proportion need germinate and establish a colony to maintain the population. Whenever conditions favour germination and establishment, the size of the population can increase explosively. Some ... of interlinked compartments, which expand and contract, fuse and shatter, according to the environmental conditions. Thus over time, these fungi are largely invariant. Other fungi have short life ...
bugs.bio.usyd.edu.au

Mycology - Structure and Function - Sclerotia and Stromata
... They remain dormant or quiescent during the stressful period and then germinate when conditions are more favourable. Sclerotia of Rhizoctonia solani. A number of different types ... TOP Germination Sclerotia on agar. Germination of sclerotia is usually associated with improved environmental conditions, usually adequate moisture and temperature. The fungus Polyporus mylittae appears to germinate ...
bugs.bio.usyd.edu.au

Mycology - Growth and Development - Hyphal Elongation
... Changes Over Time Summary Questions Growth of Hyphae and Development of Fungi Introduction Growth Phases Environmental Conditions Sporulation Summary Questions Formation of Complex Structures Introduction Linear Organs 3-Dimensional Organs Summary Questions ...
bugs.bio.usyd.edu.au

Extoxnet FAQs - Questions About Pesticide Environmental Fate
... . Environmental conditions can influence reaction rate and therefore how fast pesticides break down. For air, these conditions include temperature, moisture, sunlight intensity, and free radicals. For water, conditions ... -- greater than 100 days. Because half-life values can vary considerably depending on environmental conditions, they are often reported as a range for each media. What happens ...
extoxnet.orst.edu

Environmental and Host Conditions
... Environmental and Host Conditions Environmental and Host Conditions That Promote Powdery Mildew Powdery mildew fungi have adapted to many varied climatic ... do have basic environmental conditions that promote its growth and reproduction. Below are some general environmental and host conditions that promote powdery mildew disease. Low air circulation Low light conditions Excessive nitrogen ...
www.cals.ncsu.edu