. Diseases of economic plants. Plant diseases. Ornamental Plants 411 AZALEA Leaf-spot (Septoria) is common on the leaves. Gall {Exohasidium sps.).—Leaves, flowers, or shoots are en- larged and distorted. Diseased parts should be cut and burned and the plant sprayed with Bordeaux mixture. BALM, SILVER Rust (Puccinia men- thce Pers.). — Some thirty species of the mint family, including peppermint, thyme, catnip, monarda, are affected by this rust. It is recognized by its sori, which are at first cinnamon-colored, later chestnut-brown. Badly diseased leaves curl and die. Infested refuse should be
. Diseases of economic plants. Plant diseases. Ornamental Plants 411 AZALEA Leaf-spot (Septoria) is common on the leaves. Gall {Exohasidium sps.).—Leaves, flowers, or shoots are en- larged and distorted. Diseased parts should be cut and burned and the plant sprayed with Bordeaux mixture. BALM, SILVER Rust (Puccinia men- thce Pers.). — Some thirty species of the mint family, including peppermint, thyme, catnip, monarda, are affected by this rust. It is recognized by its sori, which are at first cinnamon-colored, later chestnut-brown. Badly diseased leaves curl and die. Infested refuse should be burned. BAMBOO Smut (Usttlago shir- aiana Hem.). — The short branches still covered by the leaf sheaths are attacked. f. %>-. 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 Stevens, Frank Lincoln, 1871- [from old catalog]; Hall, John Galentine, 1870- [from old catalog] joint author. New York, The Macmillan company
Size: 950px × 2630px
Photo credit: © Paul Fearn / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1920, bookpublishernewyo, bookyear1921
