. The American fruit culturist, containing directions for the propagation and culture of all fruits adapted to the United States. Fruit-culture. 2 30 THE DISEASES OF FRUITS, been satisfac- torily held in check by spray- ing with fungi- cides. The or- chardists upon our western coast may well seek the information for them in the partment of Agriculture. The Plum.âBlack Knot (^Plowrightia morbosa Sacc.) is the most conspicuous fungous enemy of the plum. The attack is made upon the young twigs in the spring, which soon begin to swell, the bark cracks, and upon the surface of the fissure the fungu
. The American fruit culturist, containing directions for the propagation and culture of all fruits adapted to the United States. Fruit-culture. 2 30 THE DISEASES OF FRUITS, been satisfac- torily held in check by spray- ing with fungi- cides. The or- chardists upon our western coast may well seek the information for them in the partment of Agriculture. The Plum.âBlack Knot (^Plowrightia morbosa Sacc.) is the most conspicuous fungous enemy of the plum. The attack is made upon the young twigs in the spring, which soon begin to swell, the bark cracks, and upon the surface of the fissure the fungus produces an olive coat- ing of spores by means of which the disease is spread. This is one of the very deeply - seated fungi, its threads being located chiefly in the growing layer be- neath the bark, and â when the final spores are produced they are located in sacs embedded in a hard black crust of the distorted branch, from which the common name is naturally derived (see Fig. 288). The black-knot fungus attacks a number of kinds of wild plum and cherry trees. It is not infre- quent that the hedge row sur- rounding an afflicted orchard con- tains many wild shrubs and trees conspicuous, especially during the winter, for the many black excrescences upon their branches,. Fig. 288.âa portka ot' a Fmm Branch with the Black Knot in mature form. (From Farlow.). Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Thomas, J. J. (John Jacob); Wood, William H. S. New York, Orange Judd
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectfruitculture, bookyea
