Manganese deficiency?

Checked out a couple of my friends plants today, has an odd problem that I haven't seen before. From what I understand these tiny brown spots appeared about five days ago, spread and pretty much have hit all of the lower leaves on his plant. Infected leaves feel very dry, like scratchy/rubbery paper, they look slightly metallic and reflective. What I know about the plant- topped plant, about eight - ten weeks along, heavy rains the past two weeks, he doesn't know the strain, no nutes added of any type, he's just been watering.

I asked some other people, conferred with some pictures and I'm pretty sure it's a manganese deficiency. If no one can see what's going on with these pics, I'll get over there tomorrow and take some more and get PH then.

kinda looks like cal/mag def.. but before we go adding shit... what are you feeding how much and how often? whats your ph???

i dont think its mag. def. maybe calcium or some other.... looks more like nute lockout to be honest though

theexpress said:

kinda looks like cal/mag def.. but before we go adding shit... what are you feeding how much and how often? whats your ph???

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I didn't have time to check his PH, left my kit in the truck and it was dark by the time I got back. I'll check it tomorrow. As for feeding, I don't think he's added anything, far as he's told me it's just been water and soil.

That's what i would say. Actually yeah that might be nute lockout. The leaves are clawing.

napa23 said:

That's what i would say.

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you thinking nute lockout to huh???

theexpress said:

you thinking nute lockout to huh???

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At first i was thinking manganese, but then you meantion ph and they look alike sometimes. I would check the pH before adding anything.

So check PH, flush it into balance (if outta whack) then on last batch of water add some nutes? Sounds like a plan.

napa23 said:

At first i was thinking manganese, but then you meantion ph and they look alike sometimes. I would check the pH before adding anything.

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im thinking the same man

Hope it works out. I'll be watching to see what you find out.

Thanks for the help guys, I'll be sure to let you know how it goes.

Alright, managed to get over there and check PH before night hit. PH sure as hell wasn't high, if anything it looked a bit low... probably around 6.0. Going to retest tomorrow morning make sure I did everything right then chat with a nursery down the road. Would low PH cause nute lockout, I've only dealt with high PH before.

koragorn said:

Alright, managed to get over there and check PH before night hit. PH sure as hell wasn't high, if anything it looked a bit low... probably around 6.0. Going to retest tomorrow morning make sure I did everything right then chat with a nursery down the road. Would low PH cause nute lockout, I've only dealt with high PH before.

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"Would low PH cause nute lockout" - Yes

rabbogart said:

"Would low PH cause nute lockout" - Yes

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Thanks, I'll take care of it today and update when I see results !