Treating Fursarium in canary island date palm

[Aaron854]

I made a recent post about the canary island date palm I bought 2 years ago steadily dying. It is steadily losing all of it's fronds.

I called out an arborist to diagnose what is wrong with it and he said it has Fusarium because I'm overwatering it. I thought that was an untreatable terminal disease, but he claimed that he can treat it with a fungicide annually and it should survive for decades.

Has anyone heard of it being treatable? This doesn't sound right to me.

[kinzyjr]

I hadn't heard of anything to treat Fusarium wilt, but open to learn if there are new developments. 

According to this article, fungicides haven't proven effective. : https://edis.ifas.ufl.edu/publication/PP139

Oxytetracycline is used to put palms infected with Lethal Bronzing into remission for short periods of time: https://edis.ifas.ufl.edu/publication/PP163

It's possible the arborist hast the two diseases and treatment confused.

[Aaron854]

That's my assumption is that he is referring to something else. Every article I searched online said there is no known effective treatment. Although those articles said that fusarium kills within a few months, so I figure the first annual treatment couldn't hurt, and if it survives then I'll be happy.

[Jim in Los Altos]

I’ve not heard of it being caused by too much water. It usually enters through soft tissue and often by infected cutting tools. 

[Aaron854]

I've been the only one to trim it and I don't have any other canary island date palms to contaminate it with. So if it is fusarium, I can only assume it was already living in my soil and got absorbed up through the roots.