. Diseases of economic plants. Plant diseases. 206 Diseases of Economic Plants much reduced by the disfiguring spot, and the loss from rot induced by it is also considerable. Onions before they are placed in storage should be well dried. Storage bins with good ventilation, so arranged as to prevent all heating or sweating of the bulbs, should be provided. No infected bulbs should be stored, since they will carry infection to the sound bulbs. Bins that. Fig. 109. — Black-spot on onion. Original. are known to be infested, i. e., which held infected onions in any preceding year, should be disinfe
. Diseases of economic plants. Plant diseases. 206 Diseases of Economic Plants much reduced by the disfiguring spot, and the loss from rot induced by it is also considerable. Onions before they are placed in storage should be well dried. Storage bins with good ventilation, so arranged as to prevent all heating or sweating of the bulbs, should be provided. No infected bulbs should be stored, since they will carry infection to the sound bulbs. Bins that. Fig. 109. — Black-spot on onion. Original. are known to be infested, i. e., which held infected onions in any preceding year, should be disinfected by a thoi'ough spraying with Bordeaux mixture or plain bluestone solu- tion. The white varieties of onions are much less resistant than the rod and yellow kinds. Neck-rot -''^ (Botrytis alUi Munn). — This rot is generally distributed in onion sections of the United States and Europe, and causes heavy losses to stored onions as well as to crops in. 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, 1871-1934; Hall, John Galentine, 1870-. New York, Macmillan
Size: 1493px × 1672px
Photo credit: © Paul Fearn / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookauthorstevensf, bookcentury1900, bookdecade1920, bookyear1921
