Fusarium wilt in vandas

[ingse]

I can not think about how much this has cost me in money.
But, this has been a really expencive lesson and i just have to be make serten that it never happens again.
Physan20 was delivered a few days ago and all the plants has had two baths, one with Physan and one with chlorin the next day, so all should be "clean", at least on the outside.
There is five vandas with spikes and they seem alright so far, despite of the treatment they have recived.

I am waiting for some answers from the agricultural university here, regarding if it is possible to kill Fusarium spores on the surface of orchids with my treatment but, because many working there are on their holydays, it may take some time to get an answer.

[AussieVanda]

Hi ingse, just seeing how your treatment is going

[AussieVanda]

Hi Ingse, can I suggest to you maybe try something that contains mono-di potassium phosphite as the active ingredient? It is low toxicity so maybe more available to you. It is common to use for rot type situations and whilst it may not erradicate fusarium, it may help your plants to resist it.

[ingse]

Thank you for your advice. I will try to search for something with mono-di potassium phosphite here.
I got an answer from the university and they could not give me any positive answers about a fungicide available for me at all. And did not know of anything i could use as a prevention, exept ceeping my growing area clean.
There is not many vandas left in my greenhouse now, but i clean every surface with chlorin every 14 day so the greenhouse is spotless at all time.

[AussieVanda]

Originally Posted by ingse

Thank you for your advice. I will try to search for something with mono-di potassium phosphite here.
I got an answer from the university and they could not give me any positive answers about a fungicide available for me at all. And did not know of anything i could use as a prevention, exept ceeping my growing area clean.
There is not many vandas left in my greenhouse now, but i clean every surface with chlorin every 14 day so the greenhouse is spotless at all time.

I really do feel bad for you, I'd be heartbroken as I'm sure you are.

[ingse]

Thank you.
I am not so sad any more and have learned that i have to hold my collection at a sensibel level.
Now i can see all my orchids and will notice at once if anything is wrong.
And i just bought three beautyful new vandas this weekend

[DTEguy]

Originally Posted by ingse

Thank you so much for your advice.
I have searched around and it is used in ecological farming here, but sadly one has to have a licence so it seems it is not available to buy for private persons.

Worm tea and compost tea also contain Trichoderma harzianum and other beneficial microbes as I previously mentioned.

Again, buy from a reputable company and perhaps test it on a insignificant plant before using it on your orchids. I don't have experience with teas but I do know that people use them on orchids.

I think I read that Bud use worm tea on his orchids. He is very nice and helpful and I am sure he will share his experience with you if you give him a message.

[ingse]

I think i have the remidies i need now and using Kelpmax and K-Lite seems to make the orchids grow more roots and i think the leaves also look better.
Having to import all my orchids from abroad makes it impossible to see them before i buy them, so i only buy from reputable companys in Europe after some bad experience with orders from three different companies in Asia, a few years ago.
It is not always a guarantee that i will recive "perfect" and healty orchids, but i will be even more careful with what and from whom i order from, after this experience.
Fusarium is like some forms of cancer and for me it was to late to do anything, when i noticed that sometihing was wrong.