. Fig. 6.—Characteristic leaf spot of alfalfa: A, upper surface of leaves; B, lower surface of leaf. These spots are usually larger than rust spots and differ somewhat in color, so that the two diseases can be readily distinguished. (From Cir. 326.) peziza medicaginis. Early- cutting of heavily infected fields before the leaves begin to fall is recommended. Mosaic.—Plants affected with mosaic, a virus disease, are slightly

---

Size: 1811px × 2759px
Photo credit: © The Bookworm Collection / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: ., bookcentury1900, bookcollectionamerica, booksubjectplantdiseases