PHYSAN 20: Deterioration on Standing

Ailments Orchid Doctor

by Robert M. [Bert] Hamilton (Compiler)

Originally published in The Orchid Doctor in 1980 and 1988

Posted by Sys Admin over 6 years ago.

Article Blog   Article Index
It loses its effectiveness by repeated use but the solution may not deteriorate just on standing. A76-14
Share on Social Media:  
Log in to Add a Comment

More The Orchid Doctor Articles under the Heading Physan

Physan Comments
PHYSAN 20: Active Ingredients It is a combination of quaternaray ammonium chlorides, like Shield, Roccal, etc. A77-702; RMHN-alkyl (60% C14, 30% C16, 5% C18) = 10%; n-alkyl (68% C12,32% C14); dimethyl ethylbenzyl, ammonium chlorides = 10%; inert = 80%. Physan 20 label. 0
PHYSAN 20: Algicide, Bactericide, Deodorizer, Fungicide and Viruscide It is useful in wet and humid places; can sterilize some cutting instruments if immersed for about 12 minutes. A73-811 0
PHYSAN 20: Application Use 1/2 to 1.5 tpg. for most fungus and bacteria; use 2 ttpg. for sterilizing tools. A79-272 0
PHYSAN 20: Harmful to Some Plants It has harmed roots of paphiopedilum at one-quarter strength solution when plants were dipped at repotting. A78-302 0
PHYSAN 20: Properties The new (1979) name for Consan is Physan 20; use it to sterilize tools (slowly) control algae, and many diseases of orchids; it can also prolong the life of cut flowers. A76-115; A79-1112;C72-169 0
PHYSAN 20: Spraying Monthly Too frequent spraying with it may cause toxicity; use benomyl occasionally alternately. A80-254 0
PHYSAN 20: Sterilizer It takes 10 or more minutes to sterilize tools in it. A79-1022Plastic pots can be disinfected in a solution of 1 ttpg.; rinsing afterwards is not necessary as the plants are not harmed on contact. A76-14; C72-42 0
PHYSAN 20: Sterilizing Equipment It is effective against virus if the soaking lasts overnight. A75-1090 0
PHYSAN 20: Tested as a Disinfectant for Virus One-fifth ounce in one gal. water inactivated the crude juice of Tobacco Mosaic Virus; one ounce in three gals, water inactivates it on cutting tools, work bench, pots, compost, tags, stakes, hands and plants. OD72-140 0
PHYSAN 20: Wide-spectrum Fungicide and Bactericide Composed of n-alkyl dimethyl benzyl ammonium chlorides. AH15 0
PHYSAN: Bacterial Action Studies have shown that it has good action in combatting bacteria as compared with other agents, especially on the germs Enterobacter and likely Erwinia; considerations of associations with excremental remains of insects, etc.; Diazinon tested showed no significant bactericidal effects. A80-1368 0
PHYSAN: Characteristics It is quite alkaline and if combined with another alkaline product such as soap it might cause a problem. A88-296 0
PHYSAN: Its Various Uses It can be used for cleaning benches, sterilizing pots, etc. at lttpg.; for treating damping-off on seedlings at 1|tpg; for combating bacterial rot, at 2tpg. A82-487 0
PHYSAN: Not Registered for Use on Orchids Its use could be authorized by the U.S. Dept. of Agriculture; it requires sufficient pressure brought to bear through petition. A86-915 0
PHYSAN: Viruscide All quaternary ammonium compounds, which this is are oxidizers and when used to sterilize cutting tools they need to be dried out for the necessary action to take place. OA81-152 0

New Topics

  1. Stephen Dorsey asked question Articles posted in category General Discussion
  2. Elizabeth Wagner asked question Myrmecatavola Frances Fox in category Orchid Doctor
  3. Burt Holstein started topic Error in plant origination in category Cymbidiums
  4. loan le started topic help with Clowesia Grace Dunn Chadd Ford Mericlone in category General Discussion
Ask a Question

Start a Topic

New Comments

  1. Carol Holdren commented on topic "Articles posted" by Stephen Dorsey
  2. Mary Lane commented on member plant Phal. I-Hsin Rose Milkshake by s mcn
  3. William Gorski commented on member plant Bc. Memoria Nancy Ginoccho by William Gorski
  4. Shawn Dvorak commented on member plant Bulb. mucronatum by Shawn Dvorak
  5. Diana Lenartiene commented on scheduled event "Hoot Loves Orchids" by Port Saint Lucie Orchid Society
  6. Carol Holdren commented on topic "Orchid Species in the Philippines" by unknown user
  7. Dennis Andison commented on article "Orchid Wiz - what will we do without you?" by Carol Holdren
  8. loan le commented on topic "help with Clowesia Grace Dunn Chadd Ford Mericlone" by loan le
  9. Carol Holdren commented on topic "Mediocalcar decoratum (Candy corn orchid) help" by Jason heeres
  10. Carol Holdren commented on topic "How do I get my orchid ID?" by GIBSON PWASHIKAI
  11. Arne Schon commented on orchid B. perrinii
  12. Linda Thorne commented on member plant Rlc. Williette Wong 'The Best' by Linda Thorne
  13. Carol Holdren commented on topic "Z. Redvale Jasmyn" by Shaun Bloodworth
  14. Marie H Miller commented on member plant C. aclandiae by Kerrin Samm
  15. Linda C Clark commented on orchid C. Madeleine Knowlton
  16. Heather Williams commented on member plant Phal. equestris '‘996’' by Cara Anderson
  17. Heather Williams commented on orchid Paph. Vintner's Treasure
  18. Heather Williams commented on member plant Bct. Yuan Nan Mini 'Queen Anne' by Linda Thorne
  19. Heather Williams commented on member plant Pths. racemiflora 'Seagrove Golden Fiddles' by Linda Thorne
  20. Carol Holdren commented on topic "Chloraea Magellanica" by Harriet Schiele