. Diseases and pests of cultivated plants [microform]. Ennemis des cultures, Lutte contre les; Agricultural pests; Ennemis des cultures; Agricultural pests. (a.) Cro'vn-Kall on nurncry (tock,. (b.) Ilalry root on young apple-trw. Scab (\'cntuiia iruriiualln). A generally lUstribiited pest. Its liiijtortiUice. Imwcver. ln'liig (l(>|H'uileiit on cll- miitlc conditions. In the Isliind mid liowcr Malnlnnd it Is n factor to be constantly reckonetl with, us also ut many points In the Interior. In tb« Pry Belt It has usually been oonsidered a nenilBlble disease, but it has recently oaus^'d much lo
. Diseases and pests of cultivated plants [microform]. Ennemis des cultures, Lutte contre les; Agricultural pests; Ennemis des cultures; Agricultural pests. (a.) Cro'vn-Kall on nurncry (tock,. (b.) Ilalry root on young apple-trw. Scab (\'cntuiia iruriiualln). A generally lUstribiited pest. Its liiijtortiUice. Imwcver. ln'liig (l(>|H'uileiit on cll- miitlc conditions. In the Isliind mid liowcr Malnlnnd it Is n factor to be constantly reckonetl with, us also ut many points In the Interior. In tb« Pry Belt It has usually been oonsidered a nenilBlble disease, but it has recently oaus^'d much loss at Vernon and Kelowna. The rainfall in thme districts in a wet season Is sufficient to provide the retpiisite conditions for a Imd attack of st-iib. The disease Is due to a fungus which may attack the leaves, flowers, fruit, and twigs. On the leaves it forms dark olive-green spots which may lie circular or Irregular In sha|H>. They are usually more irregular and less clearly defined on the lower surface. Tnder a lens each spot may readily lie seen to consist of the radiating branched threads ihyiihw) of tlie fungus. From these, summer »iiores (conMia) are priHlun^rl. which in (urn give rifc to new infections. The power of a loaf so attacked is much reduced, and if the attack is severe, premature .yellowing and fall of the leaf results. Serious loss may result from the disease attacking the flower-stalks, causing the flowers lo fall (jft instead of setting fruit. On the fruit. 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 Eastham, J. W. (John William), 1879-1968; Ruhmann, Max H; Hoy, B. (Benjamin), 1888-1966; British Columbia. Horticultural Branch. Victoria, B. C. : W. H. Cullin
Size: 1854px × 1348px
Photo credit: © The Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1910, booksubjectagricul, bookyear1916
