Discolored pbulbs in prostechea chacaoensis

[Yourneedfulthings]

My prostechea which just recently finished blooming has two pbulbs turning yellow with mosaic pattern/ brown color from bottom up. They are not soft or squishy. Photo included. There are both on the same branch. Second branch looks good and green.
My question: what may be the cause? And should I let them be or cut them off?

[Ray]

That is some sort of systemic rot.

Topical treatments (hydrogen peroxide or Physan) won't do much, so you'll have to resort - quickly - to a systemic.

On the "chemical" treatment side, I'd consider a copper-based treatment like Phyton, as I cannot be certain if it's a bacterial or fungal rot.

If you wanted to try the biological approach, Inocucor Garden Solution is your best option (and it happens to be on sale!).

[Yourneedfulthings]

Ray,
Thank you for your replay.
I understand the treatment necesity, but, do I remove the damage pbulbs? Or that will cause more spread of the problem?

[Ray]

Yes, I would remove them.

[Yourneedfulthings]

Thank you, I will.
Ana Maria