Phosphorus deficiency?

[IncredibowlBoss]

I started noticing these dark/brownish splotches appearing on the leaves yesterday, and it appears to be progressing. From looking at sick plant pics, I'm guessing this is a Phosphorus deficiency - can anyone take a look and confirm? (pics were taken with a phone came - white balance gives everything a slightly-yellowish hue - her leaves are considerably more green than they appear in 1st & 3rd pics.)

She's about 2 weeks old - sour diesel from a clone - our air temp is 70-76F, humidity is 50-55% - she's still in her original soil - I'm thinking the transplant into Ocean Forest may correct the deficiency in P (if that's what it is) - but if you haven't noticed, I'm a complete rookie here and any of you vets could help me out hugely!

Thank you!!!!

 

[ibjamming]

It looks to me like you caught something...an infection more than a deficiency...but I'm just guessing.

 

[IncredibowlBoss]

That was my first guess too, but the clone's only a couple of weeks old and it just started showing... I haven't trimmed/topped/etc. it. I *did* notice today that it's rootbound - I'll be moving it to a 2 gal pot today.

 

[IncredibowlBoss]

She was definitely rootbound - transplanted her to a 2 gallon Aurora root pot with LC's soilless mix #2 - watered her with 2.5 gallons distilled water. Current temp 73F, relative humidity 52%, soil pH 6.9.

Looked through the guide again - maybe a Manganese deficiency?

 

[Danny-boy777]

The fact that she was root bound makes sense as certain roots feed certain parts of the plants (or so Ive heard,feel free to correct me if im wrong) but now that the plant has more surface area to feed,your leaves should buck up.

Oh and I think you should most def go organic on this plants ass.

Its just so easy.

Namaste

 

[IncredibowlBoss]

Thanks man! Is it too early to fertilize her? I was going to give her another 2 waterings

 

[bobman]

just be easy with the watering. whenever i see spots like that i think of soggy soil. roots need air too. if i were you i would really let it dry before you water again even wilt a little. this way you will learn what dry really is. then give it one 12-16oz cup full of water with a little food. no need to soak the soil when watering at this size. how big is she? did you add a lot of perlite to your mix when you potted up? what can happen is a ball of soggy soil ends up right under the plant but you cant feel it. you put your fingers in the soil and the first 2-4 inches feel dry so you water again. well the main rootball is just sitting in soggy soil and it throws everything off.

 

[el dub]

Young plants at that stage usually need a little P. Can't tell for sure from the pics, but I'm guessing there might be a little red/purple on the stems?

lw

 

[IncredibowlBoss]

just be easy with the watering. whenever i see spots like that i think of soggy soil. roots need air too. if i were you i would really let it dry before you water again even wilt a little. this way you will learn what dry really is. then give it one 12-16oz cup full of water with a little food. no need to soak the soil when watering at this size. how big is she? did you add a lot of perlite to your mix when you potted up? what can happen is a ball of soggy soil ends up right under the plant but you cant feel it. you put your fingers in the soil and the first 2-4 inches feel dry so you water again. well the main rootball is just sitting in soggy soil and it throws everything off.

Sweet - I just transplanted her to an Aurora rootpot which (at least according to their claims) should let the moisture evaporate evenly and air get to the roots. She's about 7" - I don't know what her original soil mix was, but now she's in 6 parts Ocean Forest, 2 parts perlite, 2 parts earthworm castings w/ 4 tbsp powdered dolomite lime.

She definitely *looks* happier now - her pH was WAYYY off before too - up around 7.5 (probably locking out nutes). Now I got her down to 6.8-6.9 (got a bullshit 3-way tester, so the gauge isn't too precise).

Can I expect the spots to disappear on the old growth, or just keep an eye out on the new growth?

 

[IncredibowlBoss]

Young plants at that stage usually need a little P. Can't tell for sure from the pics, but I'm guessing there might be a little red/purple on the stems?

lw

Indeed - the stems were showing a reddish/purple when I got her

 

[jes1243]

A lot of people think disease but is usually P deficiency

 

[jes1243]

I smoked some sour diesel and the guy never flushed the plant. It was good but burnt my throat.

 

[bobman]

keep an eye out on new growth. the soil mix sounds a little lite on perlite(i like a lot of perlite 60/40 it just makes things easier) but the main thing is to water very lightly and let them dry out. that is still as small plant for a 2 gallon so just be careful. Let us know if anything starts up. I am not on the infirmary section to much so just be careful if stuff starts happening. i think if you have a problem you can bet it will be because of soggy soil because your mix is pretty heavy. just pull it out and mix in some more perlite if you start having problems and let it dry before you start chasing other solutions.

 

[IncredibowlBoss]

keep an eye out on new growth. the soil mix sounds a little lite on perlite(i like a lot of perlite 60/40 it just makes things easier) but the main thing is to water very lightly and let them dry out. that is still as small plant for a 2 gallon so just be careful. Let us know if anything starts up. I am not on the infirmary section to much so just be careful if stuff starts happening. i think if you have a problem you can bet it will be because of soggy soil because your mix is pretty heavy. just pull it out and mix in some more perlite if you start having problems and let it dry before you start chasing other solutions.

Thank you! +Rep!

 

[IncredibowlBoss]

OK - definitely noticing a change - just want to make *sure* it's an improvement

So this is the leaf yesterday AM before transplant:

And this is her today:

The dark (almost purple-ish) brown is fading to a more copper color - is this a sign that some chlorophyll is starting to hit the spot, or is it going from bad to worse?

 

[bobman]

it may take a little while for change or damaged leafs may not recover. i can not remember what mine did, the main thing is to watch for it spreading. these pictures look a lot like what i experienced. when i experienced my problems the plants were also very sluggish with very little growth. the next couple of days will tell the story just be patient. if you notice new growth and the plant seems vigorous then you are on your way. If not just take it slow and let it dry out very very well. do not be afraid to yank it out and add more perlite if things seem to be getting worse. but do not give them more water if you do. right now they do not look bad. the first time i had this happen people were telling me it was a ph issue or the plants were hungry for this or that. i ended up almost killing them until i just listened to my inner voice and took them out of the pot and looked at what was going on. don't get too worried changes in soil take a little time and things may appear to get worse before they get better.

 

[IncredibowlBoss]

Alright, so the blotch is getting lighter - originally it was that dark purple/brown, then went to copper, now it's this light gold color. Here's the progression:

I'm assuming that since it's going more and more towards green, this is a good sign?

 

[IncredibowlBoss]

it may take a little while for change or damaged leafs may not recover. i can not remember what mine did, the main thing is to watch for it spreading. these pictures look a lot like what i experienced. when i experienced my problems the plants were also very sluggish with very little growth. the next couple of days will tell the story just be patient. if you notice new growth and the plant seems vigorous then you are on your way. If not just take it slow and let it dry out very very well. do not be afraid to yank it out and add more perlite if things seem to be getting worse. but do not give them more water if you do. right now they do not look bad. the first time i had this happen people were telling me it was a ph issue or the plants were hungry for this or that. i ended up almost killing them until i just listened to my inner voice and took them out of the pot and looked at what was going on. don't get too worried changes in soil take a little time and things may appear to get worse before they get better.

Thanks! That puts me more at ease. I'm bubbling a earthworm casting/blackstrap molasses tea to feed her when she's getting dried out - hopefully that'll give her a little vigor. She's still growing and new growth looks good - I just got her under a HID lamp yesterday (she was under 85 watts of bullshit light before then), so I'm hoping all this good stuff will pay off.

My soil pH (according to a crappy 3-way meter) is ~6.9 - it was up over 7.5 before the transplant, so I'm guessing that might have been where the problem started. I'm thinking of adding a little apple cider vinegar (3/4 tbsp/gallon) to the tea before I feed her to bring it down into the low-6 range - any thoughts?

 

[bobman]

looks like your on you way. are you noticing more aggressive growth new shoots with green stems?

 

[bobman]

i would not get to exotic with stuff but thats just my way. i like to keep it simple. I am sure that plant is going to like the more light a lot. just keep letting it dry out for as long as possible.