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Most golf course soils contain high amounts of sand which are low in silicon promoting the development of fungal diseases such as gray leaf spot. [6] This disease is found on perennial ryegrass, St. Augustine grass and tall and fine fescues making golf courses a primary target.
Stenotaphrum secundatum (Walter) Kuntze – St. Augustine grass, Charleston grass, "buffalo grass" – Americas from Virginia + California to Uruguay [3] [7] Stenotaphrum unilaterale Baker – Madagascar [6] formerly included [2] see Parapholis. Stenotaphrum compressum – Parapholis filiformis
St. Augustine is a dark green grass with broad, flat blades. It spreads by aboveground stolons , commonly known as "runners", and forms a dense layer. The grass occurs on both sides of the Atlantic Ocean , [ 1 ] including much of the southeastern United States, Texas, [ 2 ] [ 3 ] Mexico, and Central and South America. [ 1 ]
Iron salts are used commonly in Russula and Bolete identification. It is best to dissolve the salts in water (typically a 10% solution) and then apply to the flesh, but it is sometimes possible to apply the dry salts directly to see a color change. For example, the white flesh of Boletus chrysenteron stains lemon-yellow or olive. Three results ...
Like other members of the genus Aspergillus, the A. ustus group is affiliated with the family Trichocomaceae.A phylogenetic study of Aspergillus section Usti using morphology, secondary metabolite chemistry and gene sequencing (beta-tubulin and calmodulin) revealed 21 distinct species and showed an affiliation of the section with two teleomorph genera, Emericella and Fennellia.
Ergotism (pron. / ˈ ɜːr ɡ ə t ˌ ɪ z ə m / UR-gət-iz-əm) is the effect of long-term ergot poisoning, traditionally due to the ingestion of the alkaloids produced by the Claviceps purpurea fungus—from the Latin clava "club" or clavus "nail" and -ceps for "head", i.e. the purple club-headed fungus—that infects rye and other cereals, and more recently by the action of a number of ...
Ascomycetes, sac fungi. A phylum of fungi characterized by the presence of an ascus, a sac-like structure where ascospores are produced. The largest group of fungi. Includes cup fungi or Discomycetes; most dermatophyte s; the mycobiont part of most lichens; powdery mildews; and fungi that produce truffle s. [37] ascospore
Armillaria mellea Armillaria hinnulea. The basidiocarp (reproductive structure) of the fungus is a mushroom that grows on wood, typically in small dense clumps or tufts. Their caps (mushroom tops) are typically yellow-brown, somewhat sticky to touch when moist, and, depending on age, may range in shape from conical to convex to depressed in the center.