. The encyclopedia of practical horticulture; a reference system of commercial horticulture, covering the practical and scientific phases of horticulture, with special reference to fruits and vegetables;. Gardening; Fruit-culture; Vegetable gardening. '*r'i jfiftr. W. //• rr x>, « at & r- Fig 2. plan of a Yery Grood Ilopper Dozer. (After XTrbalins ) Though the hoppers may escape from the kerosene bath, they are doomed. The best time of operation is on warm days if possible, early in the season be- fore the hoppers have acquired wings. A brief description of some of the most common and d
. The encyclopedia of practical horticulture; a reference system of commercial horticulture, covering the practical and scientific phases of horticulture, with special reference to fruits and vegetables;. Gardening; Fruit-culture; Vegetable gardening. '*r'i jfiftr. W. //• rr x>, « at & r- Fig 2. plan of a Yery Grood Ilopper Dozer. (After XTrbalins ) Though the hoppers may escape from the kerosene bath, they are doomed. The best time of operation is on warm days if possible, early in the season be- fore the hoppers have acquired wings. A brief description of some of the most common and destructive California spe- cies follows. B. O. EssiG Gbeedy Scale. See Apple Fests, Jfematode Root G^all These tiny creatures belonging to the order vermes cause irritation of the roots of numerous plants including the grape. On this plant they give rise to galls or swellings somewhat similar to those pro- duced by the phylloxera. *Quayle says that "no satisfactory remedy has yet been found for con- trolling parasitic nematodes. In green- houses the usual procedure is to sterilize the soil, but this, obviously, is not ap- plicable to a vineyard. However, if the soil is known to be infested, disinfec- tion is sometimes practiced before plant- ing out young vines. This is done by an application of carbon bisulfid to the soil. Trap plants have also been used, these being annuals that are pulled up before the nematodes escape. In time it may be found that resistant stock is the solu- tion of the problem. In the bulletin al- ready referred to it is stated that the Isabella is slightly resistant, while Yitis riparia has shown no nodules after the first year This fact is interesting as a suggestion that both phylloxera and nematoaes may be controlled by the same resistant.*' Pear Tiirips. See Tear Pests. Red or Orange Scale Ghrysomphalus auranUi Mask. Oeneral Appearance Distinctly circular and flat, the female scales varying from one-sixteenth to one- eighth of an inch in diam
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Keywords: ., bookcentury1900, booksubjectfruitculture, booksubjectgardening
