. 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. 798 ENCYCLOPEDIA OF PRACTICAL HORTICULTURE In the fall, when, the beetles have ma- tured, if some of the hurrows are opened, both males and females can be found, the females usually outnumbering the males four or five to one. During the hibernation period the adults apparently do not feed, as the fungus upon which the larvae feed is al- most enti
. 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. 798 ENCYCLOPEDIA OF PRACTICAL HORTICULTURE In the fall, when, the beetles have ma- tured, if some of the hurrows are opened, both males and females can be found, the females usually outnumbering the males four or five to one. During the hibernation period the adults apparently do not feed, as the fungus upon which the larvae feed is al- most entirely absent in burrows opened at various times during the winter and there is no evidence of wood Fig. 3 The Shot Hole Borer (Xyleborus di$- par). A, Larva; B, Pupa; C, Adult Female; D, Adult Male; E, Eggs. Host Plants This insect will apparently work and develop in all kinds of deciduous fruit and forest trees and has been reported as working in conifers. The following fruit trees are reported: apple, pear, quince, cherry, prune, plum, hawthorn, apricot, white hawthorn, grape and pome- granate. Nearly all writers on this sub- ject agree that the beetles favor dying trees to healthy ones and several of them state that freshly cut logs and stumps are excellent breeding places. In the North- west we have found them working in cherry, prune, apple, pear and chestnut. Cherry and prune are attacked more be- cause those two trees appear to be more subject to diseased conditions than any of the others. Many cherry trees, espec- ially young ones, die each year from the disease known as cherry gummosis. Prune trees are found growing in all man- ner of places and a great many in unsuit- able surroundings. Naturally many of them succumb, and in addition there seems to be a disease similar to that of the cherry which destroys a great many. Both of these fruits develop what is com- monly known as sour sap, a condition known to be favorable for the develop- ment of the fungus foo
Size: 1904px × 1312px
Photo credit: © Central Historic Books / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, booksubjectfruitculture, booksubjectgardening
