Diseases of glasshouse plants (1923) Diseases of glasshouse plants diseasesofglassh1923bewl Year: 1923 72 DISEASES OF GLASSHOUSE PLANTS accompanied by imperfect circulation of the air and injudicious watering, are favourable to the disease. For a description of the fungus and method of control, Bee page 64. Fusarium and PenicilUum Mots.—Certain species of Fusarium and the common blue mould PenicilUum produce a bulb rot of the hyacinth, narcissus, and tulip. The rot commences from the base of the bulb, and is typically a storage rot. Unsuitable conditions at the time of harvesting and imperfe
Diseases of glasshouse plants (1923) Diseases of glasshouse plants diseasesofglassh1923bewl Year: 1923 72 DISEASES OF GLASSHOUSE PLANTS accompanied by imperfect circulation of the air and injudicious watering, are favourable to the disease. For a description of the fungus and method of control, Bee page 64. Fusarium and PenicilUum Mots.—Certain species of Fusarium and the common blue mould PenicilUum produce a bulb rot of the hyacinth, narcissus, and tulip. The rot commences from the base of the bulb, and is typically a storage rot. Unsuitable conditions at the time of harvesting and imperfect drying of the bulbs are the main factors connected with the disease. Diseased bulbs are frequently planted be- cause external signs of rot are absent. The disease organ- isms attack the base of the bulb and work up into the centre, where the flowering shoot may be destroyed. Such bulbs rarely flower, no new bulb is formed, and the old one is converted into a powdery mass. Attention to the condi- tions operative at harvesting and during storage so as to ensure that the bulbs are perfectly dry, and the ehmination of rotten bulbs from which infection may spread, are the best ways of preventing the disease. Fig. 13. Botrytis disease of the tulip : (o) bulb showing black sclerotia, (b) fungal growth on the bulb.
Size: 1236px × 1619px
Photo credit: © Bookend / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: archive, book, drawing, historical, history, illustration, image, page, picture, print, reference, vintage
