Research Bulletin Volume 93-113

Research Bulletin Volume 93-113

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This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1906 edition. Excerpt: ...Sporotrichtim which is only a facultative parasite. No varieties of carnations appear to be entirely exempt from the bud-rot. Sporadic cases have been observed on all varieties grown in the houses where the ( rouble was prevalent. The Late son has suffered more than any other variety and must be considered especially susceptible. The only other variety which has been at all seriously affected is the Queen Louise. Benches of these two varieties growing side by side often have double the number of Lawsous affected. PROGNOSIS. The bud-rot does not seriously affect the plant, as the fungus is confined entirely to the buds. It hasnever been found growing on other parts. The injury is due, then, solely to the fact that affected buds produce deformed flowers or entirely fail to develop. Flowers which upon superficial examination appear only slightly malformed are badly rotted within the calyx and soon wither and die. This fact has been especially noted in the discussion of the symptoms. If the buds have remained without infection until the calyx has opened sufficiently to expose the tips of the petals, subsequent infection will cause but slight injury, as the fungus does not have time to develop before the flower has expanded. In houses where the trouble is severe the buds become infected when quite young, probably when not more than one-half inch long. When infection took place at this early stage, many of the buds rotted before they had time to open, or if they did open at all produced very imperfect and worthless flowers. The actual loss from the disease may vary from a fraction of one per cent to twenty-five or more per cent in badly affected plants. In one small house the grower reported a loss of $l.50 to $2.00 per day from the bud-rot of...show more

Product details

  • Paperback | 136 pages
  • 189 x 246 x 7mm | 254g
  • Rarebooksclub.com
  • United States
  • English
  • black & white illustrations
  • 1236956958
  • 9781236956958