. Fig. 9.—Fungus growth and sclerotia of Sclerotium Bolfsii. (From Ext. Cir. 118.) about the size and color of mustard seed. These are the sclerotia (fig. 9), which act as the seeds of the fungus and help to spread it. This fungus attacks many different kinds of plants and persists for years in the soil after it once gets started. It requires rather high temperature and does not develop on plants grown in the winter in California. Land and crops infested with Sclerotium Bolfsii should be handled very carefully to prevent the further spread of the fungus. Bulbs, roots, or rooted plants which ha
. Fig. 9.—Fungus growth and sclerotia of Sclerotium Bolfsii. (From Ext. Cir. 118.) about the size and color of mustard seed. These are the sclerotia (fig. 9), which act as the seeds of the fungus and help to spread it. This fungus attacks many different kinds of plants and persists for years in the soil after it once gets started. It requires rather high temperature and does not develop on plants grown in the winter in California. Land and crops infested with Sclerotium Bolfsii should be handled very carefully to prevent the further spread of the fungus. Bulbs, roots, or rooted plants which have grown in infested soil should not be planted in clean land. The dump screenings and trash and the wash water from sugar beets are also important means of distribution. Dump screenings should not be returned to the fields but should be piled on nonagricul-
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Keywords: ., bookcentury1900, booksubjectagriculturalpests, booksubjectplantd
