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Showing results 1 to 13 of 13
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Search: Posts Made By: Ray
Forum: Semi-Hydroponic Culture 09-08-2021, 04:52 PM
Replies: 75
Views: 5,843
Posted By Ray
OK then... In order to gain one kilogram of...

OK then...

In order to gain one kilogram of mass, a plant only requires 10-11 grams of nutrients, but must also absorb and process more than 180 kg of water.
Forum: Semi-Hydroponic Culture 09-08-2021, 08:52 AM
Replies: 75
Views: 5,843
Posted By Ray
Mineral uptake by plants is microscopic in...

Mineral uptake by plants is microscopic in volume, so different uptake rates would not be discernible.

To gain a pound of mass, a plant only needs about 5 grams of nutrients.
Forum: Semi-Hydroponic Culture 09-07-2021, 09:05 AM
Replies: 75
Views: 5,843
Posted By Ray
Something **must be** different about the pot,...

Something **must be** different about the pot, medium, treatment, etc., as I honestly cannot think of any reason the plant plays any role in salt buildup.

Yes, plants do secrete a compensatory ion...
Forum: Semi-Hydroponic Culture 09-05-2021, 08:39 AM
Replies: 75
Views: 5,843
Posted By Ray
That was how I grew masdies. Fertilizer should...

That was how I grew masdies. Fertilizer should be no more than 25 ppm N (approximately 0.115 ml/L for a 20% N fertilizer).
Forum: Semi-Hydroponic Culture 08-10-2021, 11:06 AM
Replies: 75
Views: 5,843
Posted By Ray
They are probably both good. Apparently made...

They are probably both good. Apparently made from different clays and/or fired differently.
Forum: Semi-Hydroponic Culture 08-07-2021, 03:05 PM
Replies: 75
Views: 5,843
Posted By Ray
Of course - My apologies!

Of course - My apologies!
Forum: Semi-Hydroponic Culture 08-07-2021, 11:25 AM
Replies: 75
Views: 5,843
Posted By Ray
Thank you Justin. I think that, overall,...

Thank you Justin.

I think that, overall, your postings and information are pretty good, but you might stress a bit more that orchid-growing is anything but "one size fits all" - as conditions vary...
Forum: Semi-Hydroponic Culture 08-06-2021, 03:44 PM
Replies: 75
Views: 5,843
Posted By Ray
Actually, my phals are not in sphagnum any...

Actually, my phals are not in sphagnum any longer. They are in a mix of LECA and rock wool cubes, some in "traditional" culture and others in S/H pots with reservoirs.

That does not mean that...
Forum: Semi-Hydroponic Culture 08-06-2021, 08:35 AM
Replies: 75
Views: 5,843
Posted By Ray
. Justin, Since retiring and downsizing my...

. Justin, Since retiring and downsizing my business, I donít sell any containers or media (OK, I do have excess rock wool cubes), nor do I sell anything specifically for semi-hydroponics. As I...
Forum: Semi-Hydroponic Culture 08-05-2021, 01:09 PM
Replies: 75
Views: 5,843
Posted By Ray
I have used 50/50, but think that 25% rock wool...

I have used 50/50, but think that 25% rock wool cubes is likely sufficient.

Unless it is extreme, the solution pH plays very little role in the pH within the pot. Read this....
Forum: Semi-Hydroponic Culture 08-05-2021, 10:36 AM
Replies: 75
Views: 5,843
Posted By Ray
In my greenhouse, it was warm and the humidity...

In my greenhouse, it was warm and the humidity was high at all times, so evaporation from the LECA was very slow.

In my home in winter, the humidity is low, so evaporation is accelerated and the...
Forum: Semi-Hydroponic Culture 08-04-2021, 07:59 PM
Replies: 75
Views: 5,843
Posted By Ray
Absolutely correct, BUT it may (depending upon...

Absolutely correct, BUT it may (depending upon the local environment) change the temperature profile within the pot and medium, which can be good or bad, or inconsequential.

If it cools the roots...
Forum: Semi-Hydroponic Culture 08-04-2021, 01:39 PM
Replies: 75
Views: 5,843
Posted By Ray
Yes, I did originate S/H orchid culture. ...

Yes, I did originate S/H orchid culture.

When I lived in PA and grew my plants in a nice warm, humid greenhouse, the phals did great grown that way.

When I moved to NC, with no greenhouse, the...
Showing results 1 to 13 of 13

 
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