Phalaenopsis Belina Fungus

too bad…

It's not fungal, but a bacteria. Certainly Erwinia (soft/brown rot).

Clean as much as you can, spray with a cinnamon decoction, treat cuts with cinnamon. Keep it separated and on the dry side (if it's possible for a Bellina…), no water on the leaves, and in the lower temperatures for the Phal (22-23°C).

Do not spray the roots with cinnamon!

You can use a copper compound as prevention, but it may impair the flowering, which is right now not the most important thing unfortunately.

This stuff can spread fast, you already started to act the right way, cut any sign of it on the spot.

The damages you show on the 3 last pics can be Erwinia, or can be some mechanical damage. If it spread, it's Erwinia.

 

You can find more info here (if you read one thing, it's the Erwinia part on the disease section, and the excellent pdf of Mrs Sue Bottom), I've summed up the most important.

I hope you'll stop this thing and enjoy the flowers as soon as possible even if it won't be this time which is a possibility. :-/

 

Thank you for the very useful link and question.

 

What you have here seems characteristic on a plant that has traveled too wet with the leaves packed tight inside a plastic sheet... looking at the pot I can venture it comes from a big "manufacturer" maybe one in Asia ( meaning the plant has really being pushed to grow fast) even if you think you bought it locally and perhaps the nine days you mentioned were not the only traveling it got recently...

So yes, do cut anything( the leaves) that is wet and spongy, the problem being that bellinas don't grow that many leaves. Do not cut all the leaves! leave at least one if possible.
then you can apply some cinnamon as suggested ( it is the Swiss knife and placebo of many an orchideist so why skip it? )

Using a cooper base fungicide like the ones you often find ready made for roses won't kill the rest of your plant and in many cases it is extremely helpful but just not in your case in my humble opinion.

There is little else to do but warmth, some humidity and last but not least a little air circulation on the remaining leave...
you have to watch for the coming leave..

If you get to that step, later on you can envision re-poting. Although very cool people like Jerry Fisher advice using only sphagnum moss with bellinas , some others have noticed they also grow well with a little top layer of moss and the rest of the pot filled with fir bark medium grade ( and a little moss); do not use a huge, huge pot right away, you need to be gradual.

Sorry I am not giving advice I just discovered over the net... good luck with your plant.

 

When you cut, cut down about 2-3cm from the infected zone. It'll leave some estate for the Phal to live with and will avoid the part already infected you can't see, as it's systemic.

A variant I forgot (you can do later if it's still at work unfortunately, no need to wet once you already applied cinnamon) :

You can spray the leaves with hydrogen peroxide. Use 3% peroxide (or 10% with twice its volume of water). it'll kill all anaerobic bacterias which is the point here. If a zone bubbles, insist till it's not bubbling anymore. Do this in the morning so it can dry, and get the eventual rest of water out of the leaves (return the plant and let fall)(yes, the hands should make sure the bark stays in the pot

After this, you can apply the cinnamon on the cuts and later spray with the cinnamon decoction

 

Cinnamon decoction:

3 tea spoons of cinnamon powder in a tea bag (or equivalent)
let it infuse 24h in half a liter of alcool 70° (preferably isopropyl, but if you can't have it, some Cooper medical alcohol will do)
Agitate during the 24 hours…
remove the bag.
spray when needed

fungicide, bactericide, insecticide, acaricide, desiccant.

Do not spray the roots! (desiccant and root growth inhibitor)
Don't spray a dry plant, not under the sun/extreme heat.

 

No, it 's done cold. If you boil the alcohol you'll have something without the qualities to extract the molecules we seek in cinnamon and no more alcohol (plus it's dangerous! Alcohol can catch fire.)

Just let the cinnamon in the alcohol for 24h in a closed recipient, and shake once in a while. Hop it's done. Hop to the spray can. It's just that simple.

I don't know where you got the idea to boil something, but it's not the case in any procedure here.