. Diseases of economic plants. Plant diseases. Fig. 76. — Fig in well-advanced stage of fruit-rot. Original. considerable damage, causing premature falling of leaves. The rust appears as brown spots upon the leaf. Leaf-blight {Cercospora bol- leana (Thtim.) Speg.). — This blight has been noted in the United States, though l)ut slight attention has been given it. It causes injury similar to that of rust. Other diseases of the fig are: a root-knot due to nematodes; a Rhizoctonia leaf-blight; Southern-blight (Sderotium rolfsii); Cankers due to Mac- rophoma, Libertella, and Tubercularia; Limb-blig
. Diseases of economic plants. Plant diseases. Fig. 76. — Fig in well-advanced stage of fruit-rot. Original. considerable damage, causing premature falling of leaves. The rust appears as brown spots upon the leaf. Leaf-blight {Cercospora bol- leana (Thtim.) Speg.). — This blight has been noted in the United States, though l)ut slight attention has been given it. It causes injury similar to that of rust. Other diseases of the fig are: a root-knot due to nematodes; a Rhizoctonia leaf-blight; Southern-blight (Sderotium rolfsii); Cankers due to Mac- rophoma, Libertella, and Tubercularia; Limb-blight due to Corticium; Root-rot (Ozonium) and Yellow-rust (Fusarium), Black-smut ^^^ (Sterigmatocystis) may affect as high as 15 per cent of the fruits in some instances. GUAVA Ripe-rot {Glomerella psidii (G. Del.) Sheldon). — This disease was described from green- house mate- rial collected at Washing- ton, D. C, and after- ward it was reported from Florida and Cali- fornia. The affected fruit shows circular,. Fig. 77. — Guava affected with ripe-rot. After 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
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Keywords: ., bookcentury1900, bookdecade1920, bookpublishernewyo, bookyear1921
