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. Tammy Bennett asked question LOOKING to BUY -Phalanopis “Dragon Tree Maple” in category Phalaenopsis
  2. Rae Walker asked question Dendrobium No I’d. HELP! in category Dendrobiums
  3. John Hyatt asked question Deformed growths on BLC King of Taiwan in category Cattleya Alliance
  4. Darrin Duling asked question Unidentified Bratonia in category General Discussion
  5. Armando Mantellini started topic Cattleya jenmanii missing awards in category Cattleya Alliance

New Comments

  1. Carol Holdren commented on member plant Renantanda Sunrise 'Prasongs' by Andrew Chan
  2. Carol Holdren commented on topic "Dendrobium No I’d. HELP!" by Rae Walker
  3. Carol Holdren commented on article "CATTLEYAS: Control of Blooming Time" by Robert M. [Bert] Hamilton (Compiler)
  4. Carol Holdren commented on member plant Lc. Nice Holiday 'Suntopia' by William Gorski
  5. Robert H. Findlay commented on topic "Phragmipedium Cape Sunset or Eric Young?" by Darrin Duling
  6. Robert H. Findlay commented on member plant Phrag. Ecuagenera Dream by Robert H. Findlay
  7. Tatjana Opekunova commented on article "CATTLEYAS: Reasons for Non-flowering" by Robert M. [Bert] Hamilton (Compiler)
  8. Carol Holdren commented on member plant Zygopetalum var. Big Red One by Wyatt Parker
  9. Carol Holdren commented on topic "Need ID, Please" by Oliver Quin Surco
  10. Sara D commented on member plant Phal. bellina var. Coerulea by Sara D