. Diseases of plants induced by cryptogamic parasites; introduction to the study of pathogenic Fungi, slime-Fungi, bacteria, & Algae. Plant diseases; Parasitic plants; Fungi. ERYSIl'HEAE. 171 The operation is done by hand or by special implement. One of the best known of these is the " Sulphur ; This consists of a brush with a hollow stem to contain flowers of sulphur, the end of the stem Ijeing perforated to allow the sulphur to escape on to the plant. Sulphuring must lie carried out during dry weather to prevent the powder being washed away. It has also to be frequently re
. Diseases of plants induced by cryptogamic parasites; introduction to the study of pathogenic Fungi, slime-Fungi, bacteria, & Algae. Plant diseases; Parasitic plants; Fungi. ERYSIl'HEAE. 171 The operation is done by hand or by special implement. One of the best known of these is the " Sulphur ; This consists of a brush with a hollow stem to contain flowers of sulphur, the end of the stem Ijeing perforated to allow the sulphur to escape on to the plant. Sulphuring must lie carried out during dry weather to prevent the powder being washed away. It has also to be frequently repeated, so that young growing shoots, flowers, fruits, leaves, and all parts liable to attack, may be kept well dusted. Sulphur prevents germination of conidia on the leaves; it also kills the mycelium, while the plant itself remains uninjured. Besides sulphuring, various copper solutions give very good results, while at the same time they act as a preventive against the false mildews (Plasmopara, Peronospm^a, etc.). Sphaerotheca. Perithecia spherical with thread-like appendages; they contain one spherical ascus with eight colourless oval Fio. 68.—iio«<;-'//i<'Wtic. SjiliatroUitca jiMinono. The fungus forms a whiti. URuly coating on the leaf, especially on the lower side ; the are als-o more or ks» curled up. (v. Tubeuf phot.). Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Tubeuf, Karl, freiherr von, 1862-; Smith, William G. London, New York [etc. ] Longmans, Green & co.
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Keywords: ., bookcentury1800, bookdecade1890, bookpublisherl, booksubjectfungi
