Semihydrophonics and fungi
 

I have a problem with fungus growing in my semihydrophonically planted
orchids. It is bad enough that it is possible to see the whitegreen
fungus on the roots through the transparent pots.

What am I doing wrong? How do I get rid of the fungi before it kills
off my orchids?

Geir

Semihydrophonics and fungi
 

I have considered adding 1/2 teaspoon of Physan 20/gallon on a monthly
basis for algae or fungus, but I'd check with Ray at Firstrays.com and
see what he thinks. They have an excellent discussion forum on the site.

Geir Harris Hedemark wrote:

I have a problem with fungus growing in my semihydrophonically planted
orchids. It is bad enough that it is possible to see the whitegreen
fungus on the roots through the transparent pots.

What am I doing wrong? How do I get rid of the fungi before it kills
off my orchids?

Geir

Semihydrophonics and fungi
 

I assume you're using PrimeAgra? I have two fans that provide air movement
in my growing area. They're not directly trained on the plants but about
three feet above them. This, plus the ambient humidity, keeps the top layer
and perhaps an inch to an inch and a half of substrate dry. If you're
having problems with mold or fungus, it's more than likely moisture related
and just lightly spraying the top layer with Daconil will take care of the
problem temporarily; but it will be interesting to get Ray's take on this,
and what he'd suggest. He's been at it a lot longer than I have.


"Charles P. Peters" wrote in message
...
I have considered adding 1/2 teaspoon of Physan 20/gallon on a monthly
basis for algae or fungus, but I'd check with Ray at Firstrays.com and
see what he thinks. They have an excellent discussion forum on the site.

Geir Harris Hedemark wrote:

I have a problem with fungus growing in my semihydrophonically planted
orchids. It is bad enough that it is possible to see the whitegreen
fungus on the roots through the transparent pots.

What am I doing wrong? How do I get rid of the fungi before it kills
off my orchids?

Geir

Semihydrophonics and fungi
 

Fungus has more to do with the condition of the plant and the temperatures
than the S/H culture technique itself. Treat with a fungicide (1% bleach
works well) and try growing a bit warmer.

--

Ray Barkalow First Rays Orchids
http://www.firstrays.com
Secure Online Ordering & Lots of Free Info!


"Jim Landers" wrote in message
et...
I assume you're using PrimeAgra? I have two fans that provide air
movement
in my growing area. They're not directly trained on the plants but about
three feet above them. This, plus the ambient humidity, keeps the top
layer
and perhaps an inch to an inch and a half of substrate dry. If you're
having problems with mold or fungus, it's more than likely moisture
related
and just lightly spraying the top layer with Daconil will take care of the
problem temporarily; but it will be interesting to get Ray's take on this,
and what he'd suggest. He's been at it a lot longer than I have.


"Charles P. Peters" wrote in message
...
I have considered adding 1/2 teaspoon of Physan 20/gallon on a monthly
basis for algae or fungus, but I'd check with Ray at Firstrays.com and
see what he thinks. They have an excellent discussion forum on the
site.

Geir Harris Hedemark wrote:

I have a problem with fungus growing in my semihydrophonically planted
orchids. It is bad enough that it is possible to see the whitegreen
fungus on the roots through the transparent pots.

What am I doing wrong? How do I get rid of the fungi before it kills
off my orchids?

Geir

Semihydrophonics and fungi
 

"Jim Landers" writes:
I assume you're using PrimeAgra?

I am using a local variant of it. The cost of shipping makes the local
stuff work out way cheaper.

Geir

Semihydrophonics and fungi
 

so it won't hurt the plants to spray w/ 1 % bleach?

"Ray @ First Rays Orchids" wrote in message
...
Fungus has more to do with the condition of the plant and the temperatures
than the S/H culture technique itself. Treat with a fungicide (1% bleach
works well) and try growing a bit warmer.

--

Ray Barkalow First Rays Orchids
http://www.firstrays.com
Secure Online Ordering & Lots of Free Info!


"Jim Landers" wrote in message
et...
I assume you're using PrimeAgra? I have two fans that provide air
movement
in my growing area. They're not directly trained on the plants but
about
three feet above them. This, plus the ambient humidity, keeps the top
layer
and perhaps an inch to an inch and a half of substrate dry. If you're
having problems with mold or fungus, it's more than likely moisture
related
and just lightly spraying the top layer with Daconil will take care of
the
problem temporarily; but it will be interesting to get Ray's take on
this,
and what he'd suggest. He's been at it a lot longer than I have.


"Charles P. Peters" wrote in message
...
I have considered adding 1/2 teaspoon of Physan 20/gallon on a monthly
basis for algae or fungus, but I'd check with Ray at Firstrays.com and
see what he thinks. They have an excellent discussion forum on the
site.

Geir Harris Hedemark wrote:

I have a problem with fungus growing in my semihydrophonically
planted
orchids. It is bad enough that it is possible to see the whitegreen
fungus on the roots through the transparent pots.

What am I doing wrong? How do I get rid of the fungi before it kills
off my orchids?

Geir

Semihydrophonics and fungi
 

On 06 Feb 2003 21:16:32 +0100, Geir Harris Hedemark
(Geir Harris Hedemark) wrote in Message ID
:

I have a problem with fungus growing in my semihydrophonically planted
orchids. It is bad enough that it is possible to see the whitegreen
fungus on the roots through the transparent pots.

What is the nature of the problem your plants are experiencing? Are
the roots beginning to rot? Or are you just concerned?

What am I doing wrong? How do I get rid of the fungi before it kills
off my orchids?

Geir

What makes you think the fungus will kill your orchids? Don't orchids
in the wild form a symbiotic relationship with fungi?

Physan 20 will kill the fungus, but are you sure that is what you
want?

Semihydrophonics and fungi
 

Larry Dighera writes:
I have a problem with fungus growing in my semihydrophonically planted
orchids. It is bad enough that it is possible to see the whitegreen
fungus on the roots through the transparent pots.
What is the nature of the problem your plants are experiencing? Are
the roots beginning to rot? Or are you just concerned?

I guess I am just concerned.

What am I doing wrong? How do I get rid of the fungi before it kills
off my orchids?
What makes you think the fungus will kill your orchids? Don't orchids

I have a picture in my head of fungi growing in the exact same
conditions which will promote root rot.

Isn't this true?

I guess the problem is mainly one of estethics.

Physan 20 will kill the fungus, but are you sure that is what you
want?

I don't know. Do I?

Geir

Semihydrophonics and fungi
 

Geir,

Plants moved into semi-hydro culture are likely to lose the root system that
was acclimated to the old medium. The degree to which that holds depends on
how similar or dissimilar the conditions are around the roots. It is
because of that loss of roots that it is important to move a plant into S/H
only when it has initiated the growth of new roots, as those will grow the
physical anatomy that is appropriate for S/H, and will support the plant
while the old roots die.

If the plant is well established in S/H, any fungus growing on the old roots
is of little or no concern.

--

Ray Barkalow First Rays Orchids
http://www.firstrays.com
Secure Online Ordering & Lots of Free Info!


"Geir Harris Hedemark" wrote in message
...
Larry Dighera writes:
I have a problem with fungus growing in my semihydrophonically planted
orchids. It is bad enough that it is possible to see the whitegreen
fungus on the roots through the transparent pots.
What is the nature of the problem your plants are experiencing? Are
the roots beginning to rot? Or are you just concerned?

I guess I am just concerned.

What am I doing wrong? How do I get rid of the fungi before it kills
off my orchids?
What makes you think the fungus will kill your orchids? Don't orchids

I have a picture in my head of fungi growing in the exact same
conditions which will promote root rot.

Isn't this true?

I guess the problem is mainly one of estethics.

Physan 20 will kill the fungus, but are you sure that is what you
want?

I don't know. Do I?

Geir