. The American fruit culturist, containing directions for the propagation and culture of all fruits adapted to the United States. Fruit-culture. 222 THE DISEASES OF FRUITS. Clairgeau are among the most susceptible, but fine crops of fruit may be gathered of these sorts from trees that formerly were worthless after thorough spraying has been adminis- tered. It only needs to be said in passing that the blight folrage and diseased fruit are sources of contagion, and the progres- sive pear grower will see to it these are burned so far as prac- ticable and thus reduce the number of germs of the dis
. The American fruit culturist, containing directions for the propagation and culture of all fruits adapted to the United States. Fruit-culture. 222 THE DISEASES OF FRUITS. Clairgeau are among the most susceptible, but fine crops of fruit may be gathered of these sorts from trees that formerly were worthless after thorough spraying has been adminis- tered. It only needs to be said in passing that the blight folrage and diseased fruit are sources of contagion, and the progres- sive pear grower will see to it these are burned so far as prac- ticable and thus reduce the number of germs of the disease. There is an orchard sanitation as essential to good health of trees as that which should obtain around the house for the well-being of its inmates. Pear Scab (Fusicladium pirinum Fcl.) is a very conspicuous fungus and one that is easily confused with the Entomosporium. Fig. 283.—Microscopic view of a section through scab spot upon pear fruit showing spores at j, erect tips at /, cuticle at c, epidermis at e, and corky cells at*. (From Duggar.) previously treated, but under the microscope the appearance is strikingly different. Instead of the compound spores of the Entomosporium, which curiously resemble the form and vari- ous body parts of an insect, and hence its generic name, the Fusicladium has simple oval brown spores that are produced singly upon the ends of short irregular threads (see Fig. 283). The fungus, by means of a network of fine threads, makes a firm attachment to the tissue of the fruit or leaf. The twigs. 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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