Brown rot taking branches

[angel4us]

This happened to me last year also outside in my backyard and it’s happening again at the base of a branch shooting off the main stem there will be like a brown fungus or mold around the branch where it hooks onto the main stem and then the branch dies when the brown fully engulfed it

 

[H.A.F.]

I think "taking branches" is the right call. I'd snip them in case it's systemic and spreads.

 

[Fiddler's Green]

Hope it doesn't spread anywhere else amigo

 

[treefarmercharlie]

I had this issue with one plant in the past and everything I read about it says it’s usually a sign of root rot.

 

[Bobby Legit]

I've also seen this. My experience was a stalk boring larvae/worm. I cut the branch off the plant and split it open, found a soft bodied muncher type larvae, usually just above the soft brown spots, sometimes below. Seemed like their shit/waste would cause the soft spots. That was the only sign of the infestation.

Never bothered with IPM, but should have. I just cut and burned what needed it.

 

[EpicAngel]

Yes exactly my thoughts a burrowing larva. Common in many soft wood trees like peach.

 

[NoWaistedSpace]

Yes exactly my thoughts a burrowing larva. Common in many soft wood trees like peach.

Have you checked at the base of your stalk at roughly ground level?
If there is a brown spot with what looks like "sawdust" on the stem and ground, you got a "Bore Worm".
If it's a worm, eventually the whole plant will wilt.
If you can estimate how high up the worm is, as @Bobby Legit said, you can split the stalk and pull it out.
The damage is already done but the plant will survive.
They are larvae from eggs that hatch from a "moth" in early spring (April, May)when the plants stems are green and softer.