The Orchid Doctor Articles under the Heading Rots

Rots Comments
ROTS: Fungal and Bacterial Those that attack roots, pseudobulbs and leaves are numerous and have difficult names; here they are listed, illustrated for recognition and their controls supplied; to avoid meeting up with any of them it is recommended that you use a periodic spraying with Physan at 1 to 1.5 tpg. monthly as "preventative maintenance"-, which may not be approved by all. A82-479; address for identification service. OIE88Apr-l 0
ROTS: Fungus or Bacterial Systemic controls that are recommended for use on seedlings or mature plants include such names as Benlate and Difolatan especially for fungal problems; Black rot and Brown rot are both caused by bacteria and they are best controlled by Truban, which is available in most nurseries. OIE85Jy-7 0
ROTS: On Cymbidiums This is usually Black rot; the plants can be saved by scraping all the rot off the pseudobulbs and removing the roots to allow air to inhibit the continued growth of the anaerobic bacteria which is the root of the problem. A88-35 0
ROTS: Pseudobulbs Bulb rot or black rot is caused by Pythium and Phytophthora, which are closely related soil-inhabiting fungi whi ch spread under warm wet conditions and can be splashed about with a hose; try to apply chemicals as protective measure, especially in early spring; Fungarid is one such recommended in Australia. AU83-250 0

New Topics

  1. John Urey asked question Blooming Stenglottis Venus “jamboree “ in category General Discussion
  2. Claudia Young asked question RO system in category General Discussion
  3. Roberto Lizama asked question Help to identify in category General Discussion
  4. Tatjana Opekunova asked question Cattleya new roots and Flower buds in category Cattleya Alliance
  5. Mary Lane asked question Orchid roots .com site? in category General Discussion

New Comments

  1. Carol Holdren commented on member plant Bc. Morning Glory by Chris Siolo
  2. R .Benson commented on member plant Kir. New Hybrid (Fred Clarke) SVO9831 by R .Benson
  3. Carol Holdren commented on topic "Blooming Stenglottis Venus “jamboree “" by John Urey
  4. Jeanne Uzar Hudson commented on member plant Lc. Canhamiana var. coerulea 'Cobalt' by Jeanne Uzar Hudson
  5. Jeanne Uzar Hudson commented on member plant Sns. gemmata by Jeanne Uzar Hudson
  6. Stefan Neher commented on topic "Orchid roots .com site?" by Mary Lane
  7. Kevin Barry commented on member plant Bul. Tammie Sue Pernas by Tony Pernas
  8. Linda Hartman commented on member plant Ctt. Final Blue by Linda Hartman
  9. Kevin Bergeson commented on member plant Paph. rothschildianum by Kevin Bergeson
  10. Carol Holdren commented on topic "recently purchased orchid shows unstoppable roots " by David George