What to do with Manganese affected leaves

Fullscan19

Well-Known Member
hey guys, so I posted in another thread about my leaves. I think I’ve pin pointed the issue to pH and Manganese deficiency. After flushing with 6.0 water, it looks like symptoms have stopped.

So should I remove the leaves (sugar mostly) that have all the effected spots?? Or just leave em? 3 weeks till harvest.

Thanks!
 

Fullscan19

Well-Known Member
One other question, I’m assuming manganese would be part of my base nutrients (oneness)??

Edit - its in oneness so I am getting it, just not being absorbed due to my past pH issue I’m addressing.
 

Beachwalker

Well-Known Member
Oh geez I didn't see that that's pretty serious would have to look that up myself I think maganese is one of the micro nutrients, I'll see if I can find out..?

what are you feeding that might have let that type of issue occur, because that's not that common? I would reconsider my feeding.

I'm looking at my GH Flora micro and it contains maganese at .05%
 
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Beachwalker

Well-Known Member
Probably trying to show would be easier

.. as to what I would do with those leaves, because there's so many I would leave them alone and let them die off on their own because the benefit from the leaves will still be there while new and healthy leaves are growing

..if you pull them off now I believe you would set the plant back further, just my opinion, also you're going to have to be aware of those necrotic spots picking up any type of mold or fungus, particularly fungus ?
-good luck!
 

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Fullscan19

Well-Known Member
The reason this all started was that I’d pH my water BEFORE adding nutes instead of after. I didn’t realize my pH would be affected, totally noob mistake and almost ruined perfectly good plants, tho i did go into pH lockout. I learned the hard way and flushed.

Looks like I’m just gonna leave em, thanks guy! Manganese stunts the growth of the plant but the buds are A OK :)
 

Tim1987

Well-Known Member
One other question, I’m assuming manganese would be part of my base nutrients (oneness)??

Edit - its in oneness so I am getting it, just not being absorbed due to my past pH issue I’m addressing.
Your ph issue. Was it low ph?

To me it looks like a combination of calcium, and potassium.

A low ph locks out calcium, magnesium, potassium, phosphorus, sulphur etc.

That doesn't look like manganese deficiency to me. If ph is low manganese is very available. If you're using modern fertilizer. It's so unlikely it's a micro. More than likely a macro.

You're still locking out somehow.
My money is on low ph.
 

Sapphyre

Active Member
Glad you pinned it down and are seeing improvement!!
Nice job- I love that feeling :D
And....lesson learned!

Happy growing!
 

Fullscan19

Well-Known Member
Your ph issue. Was it low ph?

To me it looks like a combination of calcium, and potassium.

A low ph locks out calcium, magnesium, potassium, phosphorus, sulphur etc.

That doesn't look like manganese deficiency to me. If ph is low manganese is very available. If you're using modern fertilizer. It's so unlikely it's a micro. More than likely a macro.

You're still locking out somehow.
My money is on low ph.

My pH was basically all over the place, runout was at 5.1ish, too low for soil. I guess Manganese can only be absorbed 6-6.5

Either way I flushed, and my pH now is only and always 6.0 just like in veg when things were best. I tried initially flushing with 6.5-7 but 6.0 has seen the best results.

I won't make this mistake again.
 

Beachwalker

Well-Known Member
The reason this all started was that I’d pH my water BEFORE adding nutes instead of after. I didn’t realize my pH would be affected, totally noob mistake and almost ruined perfectly good plants, tho i did go into pH lockout. I learned the hard way and flushed.

Looks like I’m just gonna leave em, thanks guy! Manganese stunts the growth of the plant but the buds are A OK :)
My pH was basically all over the place, runout was at 5.1ish, too low for soil. I guess Manganese can only be absorbed 6-6.5

Either way I flushed, and my pH now is only and always 6.0 just like in veg when things were best. I tried initially flushing with 6.5-7 but 6.0 has seen the best results.

I won't make this mistake again.
In soil PH to 6.5 for best results, good luck!
 

OldMedUser

Well-Known Member
Looks like you may have diagnosed it correctly and already taken the proper steps to fix it by correcting the pH issues. Just leave the leaves on tho as that won't hurt anything and they may recover a bit. They are going into the trim pile anyways and if they have sugar on them that can be recovered for hash or oil.

I've never actually seen or suffered from an actual MN deficiency.

Manganese.jpg

:peace:
 

polishpollack

Well-Known Member
Fullscan, is there no mn in your fertilizer? You should talk about what you do and what you're using to get better answers. Your leaves do look like mn def, but strange that you give nutrients and this problem develops.
 
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