The Black Scale (Classic Reprint) - Softcover

Inhaltsangabe

Excerpt from The Black Scale

Just when it was introduced into California, or from what country, doesn't appear to be established. The first complete account of its occurrence here is given in Comstock's report for 1880. It had been in the State, however, many years previous to that time. By 1880 it was well established in various parts of the State, and found infesting a wide range of food plants; but it was at that time, as now, a particularly serious enemy to citrus trees. It was given the common name of Black Scale of California. Since this was the first reference to this scale in the literature of this country, and because Of the common name applied, it appears that it was unknown in the United States, at that time, out side of California.

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