Copper Sulphate (CuSO4) Solution as a Fungiside ?
Login
User Name
Password   


Registration is FREE. Click to become a member of OrchidBoard community
(You're NOT logged in)

menu menu

Sponsor
Donate Now
and become
Forum Supporter.

Copper Sulphate (CuSO4) Solution as a Fungiside ?
Many perks!
<...more...>


Sponsor
 

Google


Fauna Top Sites
Register Copper Sulphate (CuSO4) Solution as a Fungiside ? Members Copper Sulphate (CuSO4) Solution as a Fungiside ? Copper Sulphate (CuSO4) Solution as a Fungiside ? Today's PostsCopper Sulphate (CuSO4) Solution as a Fungiside ? Copper Sulphate (CuSO4) Solution as a Fungiside ? Copper Sulphate (CuSO4) Solution as a Fungiside ?
LOG IN/REGISTER TO CLOSE THIS ADVERTISEMENT
Go Back   Orchid Board - Most Complete Orchid Forum on the web ! > >
Reply
 
Thread Tools Rate Thread Display Modes
  #1  
Old 08-08-2018, 06:05 AM
handiko handiko is offline
Jr. Member
 

Join Date: Aug 2018
Location: Jakarta
Posts: 4
Copper Sulphate (CuSO4) Solution as a Fungiside ? Male
Default Copper Sulphate (CuSO4) Solution as a Fungicide ?

Hello everyone.

I have several hybrid Phal seedlings with sphagnum moss medium. With the day progresses more and more into August, here (in Indonesia) the rain becomes more and more often. The implication is my seedling medium become moist longer than before. Now I only water it about once every week, while a few weeks ago I watered it twice a week. So, as a prevention, I think that I need to spray my seedling with some fungicide.

I have some copper sulfate pentahydrates crystals (CuSO4.5H2O) from many years back still in good condition. And I read somewhere on the internet that copper sulfate solution can be used as a fungicide on crops.

My Question is: Is it true? Can I use copper sulfate solution as a fungicide on orchid? Is there any side effect? What dose should I use?

Any answers are welcome. Thank you.

Last edited by handiko; 08-08-2018 at 06:19 AM..
Reply With Quote
  #2  
Old 08-08-2018, 08:22 AM
Ray's Avatar
Ray Ray is offline
Senior Member
 

Join Date: May 2005
Member of:AOS
Location: Oak Island NC
Posts: 15,204
Copper Sulphate (CuSO4) Solution as a Fungiside ? Male
Default

Yes, copper sulfate can be used as a systemic and topical fungicide and bactericide, but there are some dendrobiums and thin-leaved orchids that find it to be toxic. (It damaged a coelogyne of mine once.)

For what it's worth, Phyton 27 is a copper sulfate product, with the equivalent of 200g CuSO4-5H2O per liter of water, and that is used by further diluting it to a 0.5%-2% solution.

Back to your original query - water, by itself, is not an issue, and I have found that plants in potting media that are very water-retentive do OK as long as it stays warm and rains a lot. Over the last two months, we have averaged over 1" a day of rain, and my phalaenopsis in sphagnum are doing great.

That, of course, has no bearing upon your outcome, but I think I'd look at changing the potting medium or protecting the plants from the rain before I'd resort to preventive fungicide use.
__________________
Ray Barkalow, Orchid Iconoclast
FIRSTRAYS.COM
Try Kelpak - you won't be sorry!
Reply With Quote
  #3  
Old 08-10-2018, 05:47 AM
handiko handiko is offline
Jr. Member
 

Join Date: Aug 2018
Location: Jakarta
Posts: 4
Copper Sulphate (CuSO4) Solution as a Fungiside ? Male
Default

Quote:
Originally Posted by Ray View Post
Yes, copper sulfate can be used as a systemic and topical fungicide and bactericide, but there are some dendrobiums and thin-leaved orchids that find it to be toxic. (It damaged a coelogyne of mine once.)

For what it's worth, Phyton 27 is a copper sulfate product, with the equivalent of 200g CuSO4-5H2O per liter of water, and that is used by further diluting it to a 0.5%-2% solution.

Back to your original query - water, by itself, is not an issue, and I have found that plants in potting media that are very water-retentive do OK as long as it stays warm and rains a lot. Over the last two months, we have averaged over 1" a day of rain, and my phalaenopsis in sphagnum are doing great.

That, of course, has no bearing upon your outcome, but I think I'd look at changing the potting medium or protecting the plants from the rain before I'd resort to preventive fungicide use.
Thanks, Ray.

If there's no any side effect of copper sulfate solution on phal (proper dose, of course), I'll try that this weekend.

The media are still newly potted (since May 18), so I don't think I'll repot it for a while.
The current conditions are sphagnum moss + fine osmunda fiber media on plastic compot (about 15 cm dia.), with 10 seedlings per compot, and all the compot protected from the sun and rain by means of a small hut with a semi-translucent white plastic sheet roof. With these conditions, I have a gorgeous growth rate on all seedlings.
Reply With Quote
  #4  
Old 08-10-2018, 02:55 PM
Nexogen Nexogen is offline
Senior Member
 

Join Date: Apr 2013
Posts: 675
Copper Sulphate (CuSO4) Solution as a Fungiside ?
Default

What do you mean? There are no side effects.
If you take antibiotics without need, do you think it's okay?
Reply With Quote
  #5  
Old 08-10-2018, 05:03 PM
handiko handiko is offline
Jr. Member
 

Join Date: Aug 2018
Location: Jakarta
Posts: 4
Copper Sulphate (CuSO4) Solution as a Fungiside ? Male
Default

Quote:
Originally Posted by Nexogen View Post
What do you mean? There are no side effects.
I don't know. Maybe like Ray said about the unwanted effect on Dendrobium, Coelogyne, and some thin leaved orchids.
Reply With Quote
  #6  
Old 08-10-2018, 07:21 PM
Ray's Avatar
Ray Ray is offline
Senior Member
 

Join Date: May 2005
Member of:AOS
Location: Oak Island NC
Posts: 15,204
Copper Sulphate (CuSO4) Solution as a Fungiside ? Male
Default

Like "Nexie", I avoid preventive treatments of anything.

Basically, you are hoping to compensate for a shortfall in cultural parameters by the application of what is an environmental pollutant.
__________________
Ray Barkalow, Orchid Iconoclast
FIRSTRAYS.COM
Try Kelpak - you won't be sorry!
Reply With Quote
  #7  
Old 08-11-2018, 02:15 AM
handiko handiko is offline
Jr. Member
 

Join Date: Aug 2018
Location: Jakarta
Posts: 4
Copper Sulphate (CuSO4) Solution as a Fungiside ? Male
Default

Quote:
Originally Posted by Ray View Post
Like "Nexie", I avoid preventive treatments of anything.

Basically, you are hoping to compensate for a shortfall in cultural parameters by the application of what is an environmental pollutant.
I think in my climate area it is necessary to apply preventive treatment for fungi related deceases during monsoon especially from October until February, at least once a month. Even though I have small hut protecting my orchids, it is an open hut, not a closed one like a green house. So when the environment is quite humid so are the media.

Thanks for the advice
Reply With Quote
  #8  
Old 07-20-2020, 04:47 PM
KennyS KennyS is offline
Jr. Member
 

Join Date: Jul 2020
Posts: 12
Copper Sulphate (CuSO4) Solution as a Fungiside ?
Default

Quote:
Originally Posted by Ray View Post
Yes, copper sulfate can be used as a systemic and topical fungicide and bactericide, but there are some dendrobiums and thin-leaved orchids that find it to be toxic. (It damaged a coelogyne of mine once.)

For what it's worth, Phyton 27 is a copper sulfate product, with the equivalent of 200g CuSO4-5H2O per liter of water, and that is used by further diluting it to a 0.5%-2% solution.

Back to your original query - water, by itself, is not an issue, and I have found that plants in potting media that are very water-retentive do OK as long as it stays warm and rains a lot. Over the last two months, we have averaged over 1" a day of rain, and my phalaenopsis in sphagnum are doing great.

That, of course, has no bearing upon your outcome, but I think I'd look at changing the potting medium or protecting the plants from the rain before I'd resort to preventive fungicide use.
Hi Ray!

I did some math on the Phyton 27. After all this math I saw your message. However, my results differ from yours. My findings are 258.8 g / L copper sulfate in the stock solution. In the end, use about 1-3 ml of the stock solution to get the final solution of 1 Liter. But this amounts to a dilution of 0.1 - 0.3%. I now doubt my own math skills. Can you clarify this? I don't want to accidentally overdose my orchids.

Thanks!

Last edited by KennyS; 07-20-2020 at 04:53 PM..
Reply With Quote
  #9  
Old 07-20-2020, 05:15 PM
Ray's Avatar
Ray Ray is offline
Senior Member
 

Join Date: May 2005
Member of:AOS
Location: Oak Island NC
Posts: 15,204
Copper Sulphate (CuSO4) Solution as a Fungiside ? Male
Default

Let me work this out right here:

According to the label, Phyton 27 contains 21.36 (I formerly used 20%) weight percent copper sulphate pentahydrate, yielding 5.5% elemental copper. They recommend 1-2 teaspoons/gallon, which is 0.13% to 0.26% dilution. You're right - I was off on my dilution levels!
__________________
Ray Barkalow, Orchid Iconoclast
FIRSTRAYS.COM
Try Kelpak - you won't be sorry!
Reply With Quote
  #10  
Old 07-20-2020, 07:18 PM
KennyS KennyS is offline
Jr. Member
 

Join Date: Jul 2020
Posts: 12
Copper Sulphate (CuSO4) Solution as a Fungiside ?
Default

Great! Thank you for checking the numbers.
Reply With Quote
Reply

Bookmarks

Tags
copper, fungicide, seedling, solution, sulfate


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Fertilizer Measuring TDS EC Osmolality Osmolarity Water Quality estación seca Beginner Discussion 2 08-20-2017 09:30 AM
Mixing Physan 20 Solution with Orchid Food Solution bethanyarmstrong Beginner Discussion 7 09-10-2013 08:41 PM
Fertilizer stock solution joe_orch Advanced Discussion 2 11-30-2007 03:02 PM

All times are GMT -4. The time now is 02:17 PM.

© 2007 OrchidBoard.com
Search Engine Optimisation provided by DragonByte SEO v2.0.37 (Lite) - vBulletin Mods & Addons Copyright © 2024 DragonByte Technologies Ltd.
Feedback Buttons provided by Advanced Post Thanks / Like (Lite) - vBulletin Mods & Addons Copyright © 2024 DragonByte Technologies Ltd.

Clubs vBulletin Plugins by Drive Thru Online, Inc.