Nute burn on my San Pedro?

[Crazysight]

I just checked out the two San Pedro's that I have sitting on my front steps.  They have a funky kind of color to the base of them, a yellowish-orange, and their are raised spots that look like some kind of a growth or something above those.  I scraped at a few of them to see if there was any green underneath, thinking that if it was a fungus that maybe I'd see some green underneath, but I didn't.  I did feed them what I feel may have been a pretty heavy amount in the last few days, so I'm wondering if this might be a reaction from nute burn?  Sorry I don't have any pics but I hope I described it well enough.  I just flushed them with a good amount of water.  Can anybody clarify if this is a growth or a nute burn reaction?

[Crazysight]

I will say that the mixture I used was relatively low in nitrogen.

[EA-1306]

Is the flesh of the area soft at all?

[jikuhchagi]

Without a picture its hard to say, but there is a kind of rot that has an orange color to it, and once it sets in it is pretty hard to get rid of.

j :cry:

[CosmicSun]

It's hardened, not soft.  It does have an orange color to it as well.  It is new to the plants within the past few days.

[Ashoka]

Orange color could indicate a mold attack. Let the soil dry out and keep it in a non-humid environment with plenty of direct sunlight. When watering, only water directly in pot, keep water away from the plant tissue.

Brown or yellow leaf spots ...Fungi which usually develops when water is allowed to remain on the leaves. Cold water can also be a cause of spotting. Use room temperature water for misting and watering, and make sure the foliage dries before night.

This advice should only be followed if you're positive that it is in fact a mold attack.

Ashoka

[EA-1306]

I have to admit I've never had the symptoms of fert burn in my cacti, I am almost tempted to overfeed one just to see what happens.

[Crazysight]

Orange color could indicate a mold attack. Let the soil dry out and keep it in a non-humid environment with plenty of direct sunlight. When watering, only water directly in pot, keep water away from the plant tissue.

Brown or yellow leaf spots ...Fungi which usually develops when water is allowed to remain on the leaves. Cold water can also be a cause of spotting. Use room temperature water for misting and watering, and make sure the foliage dries before night.

This advice should only be followed if you're positive that it is in fact a mold attack.

Ashoka

K thanks Ashoka...good info.

[Cassie]

I have had nitrogen burn on my san pedros.
:oops:
It caused the tips to die back. Some of them grew away again ok, but with a ring of scars from the die-back apparent as the cactus grew. Some etoliated at that point too and on some the die-back was severe enough for the tip growth to stop (these cacti popped new pups from the damaged tips.)

[EA-1306]

I've had sunbrun do the same thing, damaged tips with regrowth later, I have a T. huanucoensis that had the same thing from cold damage, thought before the suberin forms the damage looks different.

[Crazysight]

"keep it in a non-humid environment"

Wish I had something like that around here.  It really only seems to be on one plant in particular, and it's all around the base.  I'm pretty sure it's a mold/root rot sort of deal.