Yellow leaves, spots - First grow - White Russian - CFL

[mgjscdhl]

I did some googling prior to this, but honestly I can't nail it down. I beleive the issue started after last feeding (4 days ago). This
White Russian is a clone I gotten a month prior. Its transplanted into soil 16 days ago. While it went well it took a few days for yellowing to disappear. About 3 days ago it showed up again. At first it started in middle (I think) and only effected the lower and middle leaves. One is yellow, probably canary yellow, and some dark almost red spoting on edges and end of leaves. Another two are yellowing and one shows these blotches near center of the leaf itself. The rest of plant looks ok but I'm not sure what todo. Fertilizer was used, Its the General Organic grow formula, about 3/4 strenght and I've done folliar spraying to keep moisture level up and some water when topsoil was bone dry. The Water/Fertilizer is 6.3-6.4ph respectively and its on 18/6 cycle. I have not flushed or treated the plant with other chemicals, etc.. If it at all helps its around 5-6" tall now. I use distilled water right now instead of tap water (because I have concern over hard water). I don't (yet) have a ec/pph meter just a ph. Soil is soiless mix with 1/2 perlite as peatmoss. Day cycle is around 76-80F normally with 27-30% moisture and at night 70-73F and 26-28% moisture typically. Airflow has been steady and constant.

I'm not sure what else to write. i hope it was enough for you to help. My thread here is called "rubbermaid white rhino cfl". Yes, I mistakenly identified the plant. It IS white russian.

mgjscdhl Reviewed by mgjscdhl on 05-01-2010. Yellow leaves, spots - First grow - White Russian - CFL I did some googling prior to this, but honestly I can't nail it down. I beleive the issue started after last feeding (4 days ago). This White Russian is a clone I gotten a month prior. Its transplanted into soil 16 days ago. While it went well it took a few days for yellowing to disappear. About 3 days ago it showed up again. At first it started in middle (I think) and only effected the lower and middle leaves. One is yellow, probably canary yellow, and some dark almost red spoting on edges Rating: 5

[Dorje113]

I did some googling prior to this, but honestly I can't nail it down. I beleive the issue started after last feeding (4 days ago). This
White Russian is a clone I gotten a month prior. Its transplanted into soil 16 days ago. While it went well it took a few days for yellowing to disappear. About 3 days ago it showed up again. At first it started in middle (I think) and only effected the lower and middle leaves. One is yellow, probably canary yellow, and some dark almost red spoting on edges and end of leaves. Another two are yellowing and one shows these blotches near center of the leaf itself. The rest of plant looks ok but I'm not sure what todo. Fertilizer was used, Its the General Organic grow formula, about 3/4 strenght and I've done folliar spraying to keep moisture level up and some water when topsoil was bone dry. The Water/Fertilizer is 6.3-6.4ph respectively and its on 18/6 cycle. I have not flushed or treated the plant with other chemicals, etc.. If it at all helps its around 5-6" tall now. I use distilled water right now instead of tap water (because I have concern over hard water). I don't (yet) have a ec/pph meter just a ph. Soil is soiless mix with 1/2 perlite as peatmoss. Day cycle is around 76-80F normally with 27-30% moisture and at night 70-73F and 26-28% moisture typically. Airflow has been steady and constant.

I'm not sure what else to write. i hope it was enough for you to help. My thread here is called "rubbermaid white rhino cfl". Yes, I mistakenly identified the plant. It IS white russian.

My plants are doing something like that after being transplanted from rockwool to soil. My pH was a little high but not so high it should be a big problem.

I'd buy a soil pH and NPK test kit and see where your soil is at, you can also test the runoff from watering, which should be low 6's or so.

Be sure to post up if you find that anything helps.

Good Luck!

These are mine:

http://boards.cannabis.com/plant-pro...ease-help.html

[mgjscdhl]

I do know it'll yellow up a bit while roots are forming. If not the case I hope yours clears as well. I'll post as soon as I find something out. My ph is also in that range but I thought next watering I may runoff OR flush and test it.

[Dorje113]

This is copied and pasted from my tread, but might help you too:

Best I can tell it's a zinc deficiency caused by high pH.

I watered mine with plain water with a pH of 5.5, the water seeping through came out to the low 6's.

It's been 36 hours and it seems like it's getting better.

[mgjscdhl]

I had one other think it was zinc as well. And with "rusting" blotches that seems to be the case. My ph has been on brink of its high limits but the peat so far has reduced the ph. I flushed today to clear out any nutrient lock, ph imbalance, etc.. The ph of the water (which was distilled 6.0ph) didn't fluctuate anymore than 6.1-5.8ph. Little weird huh? I guess peat in its forms are all different. I wish though I had bought a mix, potting soil.

Anyways I'm going to look up the information on zinc deficiency. If I can treat it at same time of flushing I'm all for it. I put a very light fert mix (10% of reg) to try and get nutrients back to the plant. Maybee that'll add some zinc since it says on bottle it provides some (general organic - grow)

[Dorje113]

I don't think you need to add Zinc. You probably just need to lower the pH so it's available to the plant. I could see adding a little bit of micros but not too much...

Anyhow... mine seem better or worse depending on when I look. IDK, might just start over.

When I made my mix, I used coco fiber instead of peat at 25% of the mix. I always use peat, and shouldn't have tried to alter the formula (50% potting mix (FF OF or similar), 25% perlite, 25% peat moss). Then I add a little hydrated lime to counteract the lower pH of the peat, and it balances perfectly with water pH that is normally 7.3 around here and a low dose of Earth Juice nutes.

[Rusty Trichome]

Proper water ph for peat-based mediums is 6.3 to 6.8ish. Any lower than that and you'll lock-out nutrients. Bump your ph up to mid to high end of the range.

You are overwatering/overspraying. Cannabis needs a wet/dry cycle. If you keep the rootball wet, root rot will set-in. Stop all spraying at least until this problem is resolved. Spraying is compounding the issue.

Feed per manufacturers instructions, not because you feel the plants need ONE of the micronutrients in it. I very-much doubt it's a zinc problem anyway.

Please provide a link to the nutrients and additives you use. I couldn't find General Organics online, and it's not something I've heard of in here.

Ask for help before assaulting your plants with inappropriate cures. You will do more damage than good.

Best to fill-out the troubleshooting form for a more complete diagnosis and treatment recommendations. (link is in my signature)

[WashougalWonder]

Betcha he means General Hydroponics.

[mgjscdhl]

what do you mean with innappropriate cures? it appears better than it was. If the rusting clears out I should be ok. And that might only require a little time.

Well, no I do mean "General Organic", the line is called biothrive by general hydroponics. Its what they like to call "vegan plant food". The site isn't first results you get in google. No idea about yahoo or bling.

GENERAL HYDROPONICS

and feed chart http://www.generalhydroponics.com/ge...-FeedChart.pdf

[Rusty Trichome]

what do you mean with innappropriate cures? it appears better than it was. If the rusting clears out I should be ok. And that might only require a little time.

Spraying (with a nutrient solution no less) an overwatered plant causes more stress. I call that inappropriate.
But apparently you have it under control, good luck.