Guide to Nutrient Deficiency or Toxicity
- Thread starter nick17gar
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BlueB
Active Member
No, I don't foliar feed. They are in soil and I water them with 1 gallon of RO water that has 2.5mL Protek Silica, 5mL Microblast, 10mL Calmg added to it. Then pH adjusted to 6.5. I've tested the pH of the soil with neutral water and the soil is a little bit high at pH 7.3. That's why I adjust when I water to 6.5. Do you think I should water with 6.0 maybe? I thought it was either pH problem or heat. The only thing is, the tops of the plants look fine and healthy. The whitish yellow splotching is only occuring on the midsection and bottom fan leaves and nowhere else. If it was a pH problem, wouldn't it be occurring on the new growth also?
BlueB
Active Member
This is normal for a plant that far into flowering. It's the plant's way of using up the nitrogen and other elements before it finishes. If this is happening to the main fan leaves first and your new leaf growth is still green in your buds, then everything is totally normal. In fact, this is what you want towards the end of the flowering stage. Are the tips dried out and papery? Are those leaves starting to fall off? Keep an eye on the leaf color in the buds and new growth, as long as that is green and the buds are developing normally then it is fine. Some strains I've seen all the fan leaves do this eventually so you just cut them off so the buds below can get access to the light. The strain I have does this and the fan leaves will fall off leaving only the buds to swell up and get super huge. Can you post a photo of the buds please?
Jimmyjonestoo
Well-Known Member
Yes tips are curled upwards only on effected leaves tho and no its not the whole plant. I've been adding a little fish emulsion during flowering for nitrogen which is what makes me say I don't think its that. Very well could be a Ph problem I suppose. Im out of test strips so ill try and check that soon.
Edit: and I know its not heat I've got that under control.
Jimmyjonestoo
Well-Known Member
Its a ten week strain so not even halfway through making me think it's not normal end of cycle yellowing. Yes the tips of affected leaves appear burnt and yes almost papery and are falling off after a while. Leaf in my pic I pulled off. Bud growth and new leaves appear normal to me. Ill get a couple more pics up in a bit when lights come on.
Jimmyjonestoo
Well-Known Member
Ok so here's a couple more pictures hope they help I know they aren't the best quality. Thanks for the input. Grandaddy haze day 32 in soil under 1000 hps. Fed microblast, morbloom, and fish emulsions. Temps never get above 80 but being winter night time temps get a little low. On our coldest day of the year so far night temp dropped to 55.
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BlueB
Active Member
Ya Mon,
Those buds look totally normal. I would say that you are doing everything right, they look just fine. NOW COULD SOMEONE PLEASE TELL ME WHAT MY PLANT PROBLEM IS? I posted a photo of a leaf on the last page. The tiger stripped leaf pattern on my leaves has got me really concerned and it really seems like it should be easily identifiable. BTW, the plant is only 1 week into flower. PLEASE HELP!
Jimmyjonestoo
Well-Known Member
Thanks. Wish I could help with your problem. I've only seen that kind of spotting from bugs or light burn but you said you don't spray so its weird.
perkele
Well-Known Member
hi, any ideas on what can this be? I've excluded the possibility of any bugs. Please advice
View attachment 1997280View attachment 1997281View attachment 1997283 And how can this be treated? ( general info: unknown seed, day 74 with 25 into flowering, lights CFL's,soil
and from 2 to 2 weeks 3 cups of 
for more https://www.rollitup.org/grow-journals/496280-perkeles-growing-journal-first-plant-20.html ) Thanks
View attachment 1997280View attachment 1997281View attachment 1997283 And how can this be treated? ( general info: unknown seed, day 74 with 25 into flowering, lights CFL's,soil
and from 2 to 2 weeks 3 cups of for more https://www.rollitup.org/grow-journals/496280-perkeles-growing-journal-first-plant-20.html ) Thanks
nick17gar
Well-Known Member
you seem ok dude. a litte yellowing at that stage is fine
nick17gar
Well-Known Member
thats a nute deficiency if your 100% sure its not bugs, magnesium (my guess), or phosphorus.
could be pH being off, could be water droplets on the leaves burning a hole on them (not as likely)
perkele
Well-Known Member
Leaves burning...I don't think so, I understand at what you are thinking, I am not misting the leaves. pH is always and it has always been between 6.5 and 7. Phosphorus...I hope not. I am feeding her the MG juice and it has phosphorus in it...the water I am using is still water with 5.5 the pH. Might be the Mg. I have some epsom salt and I will use it on my next watering. And magnesium is the one that is starting from the middle of the plant, isn't it? cause the affected leaves are from the middle.
Thank you for your reply!
nick17gar
Well-Known Member
well i dont think its over ferting, overferting usually appears on the leaf tips / serrated edges.
yes, magnesium/calcium deficiency (usually) starts all over the leaves, as speckled spots of death, death by starvation, not overfeeding.
are you in soil? 5.5 ph is too low. if your adding 6.5-7ph water, and the runoff is 5.5, that could be a sign of something in the soil that can/is causing trouble. my last watering went in at 6.8 and came out at 6.4
yes, magnesium/calcium deficiency (usually) starts all over the leaves, as speckled spots of death, death by starvation, not overfeeding.
are you in soil? 5.5 ph is too low. if your adding 6.5-7ph water, and the runoff is 5.5, that could be a sign of something in the soil that can/is causing trouble. my last watering went in at 6.8 and came out at 6.4
perkele
Well-Known Member
6.5-7 is the pH in the soil. I'll water it tomorrow with some epsom salt as well and I'll see what will be. Thanks for the advices
Jimmyjonestoo
Well-Known Member
Awsome. Thanks for the input man.
Thedillestpickle
Well-Known Member
Could it be Calcium deficiency? you can't expect your leaves to look exactly like the ones in the photo. Let me know when you find out what it is though because I have one leaf that looks just like that(one leaf out of 10 plants so im not too worried)
BuddGreen
Active Member
Thanks for the info. My Veg always goes good.But the leaves curl durring mid to late bloom.
I'm using Technaflora BC Nutes @ 1/3 strength in Veg.
1/3 then up to 2/3 for the last half.
I keep the nute pH @ 6.0 in soil.
This round I'm going to try the nutes @ 1/2 to see what happens???
hi, im new to this site and a first time grower. i looked everywhere and cant figure out what deficiency im looking at. im growing 3 jock horror plants in a scrog. 3 gal pots in roots organic 707 soil, botanicare pure blend veg and flowering nute. lights are 2 pro grow 260 led. im in the 5th week of flowering and did not notice a stretch which i think is weird since sativas are suppose to be stretchy. i was doing half veg half flower nutes for the transition stage till i went with a full dose of flowering is when the deficiency really kicked in. maybe sulfur deficiency? any help would be greatly appreciated.
