Phosphorus deficiency or nutrient burn

[goodsensy4all]

Hello everyone

I am struggling with burn, yellow leaves.
Maybe some growers have this problem too.

Just like in the pictures, the leaves are burned, yellow, curly and turn brown dry, they also have red/pink Stems (which means phosphorus deficiency)

Edges of the leaves Brown, also Brown spots.

Give them regular dose of nutrient, Advenced Hydrophonics of Holland line. pH 6.3 of water and runoff.

Wondering is this nute burn or phosphorus deficiency?

Cheesee XXL auto from Dinafem.

 

[AgentPothead]

I'm pretty sure phosphorus would be locked out at 6.3 in hydroponics? At least this chart seems to imply that. You could try lowering your PH to 6 or so? I haven't run hydro except coco for a couple of grows so I'm not the best person to ask. Hopefully somebody who hygrows will see this

 

[PurplePotion]

What medium are you growing in? Soil? Coco? Hydro? What EC or ppm level are you feeding them?

 

[Americangrower]

Much like AgentPothead I'm a soil guy, but from I've read through the years. I think hydro run lower then 6ph. I would lower ph but I'm sure some hydro guy/girls will chime in.

 

[goodsensy4all]

Growing in soil,
I think phosphorus locked but pH is in range. I started to give more P in water, maybe they needs couple more watering with higher P nutrient.
Also lowering pH to 6.0 maybe IT helps.

 

[f-e]

You have brown hairs way to early in flower. They're burning. What is a 'regular dose' and I presume your run-off has climbed the scale of your meter, up your arm, and should be ringing around inside your head by now?

 

[goodsensy4all]

You have brown hairs way to early in flower. They're burning. What is a 'regular dose' and I presume your run-off has climbed the scale of your meter, up your arm, and should be ringing around inside your head by now?

Yes, there are Brown hairs somewhere.
Half strenght of nutrient series but giving them full dose from last 3 weeks without plain water.
Sorry do not understand rest of your answer.

 

[AgentPothead]

Growing in soil,
I think phosphorus locked but pH is in range. I started to give more P in water, maybe they needs couple more watering with higher P nutrient.
Also lowering pH to 6.0 maybe IT helps.

Okay so for a soil grow phosphorus shouldn't be locked out yet.

Can I ask why you are using hydroponics nutrients in a soil grow? Generally in soil you feed the biome and that in turn feeds the plants. In hydroponics you feed the plant directly.

 

[goodsensy4all]

This is soil nutrient too
Thanks for advice.
Red stems and brown spots on leaves make me confusing, decided to flush soil with pure water.

 

[Creeperpark]

What kind of soil mix do you have if you don't mind me asking? Soil-less peat, Organic Amended soil, coco and peat mix?

 

[goodsensy4all]

Of course don't mind.
Regular soil, Canna Terra

 

[Mattbho]

ARE YOU USING?

SOIL:


How long has this problem been going on?
What STRAIN are you growing?
What was the establishing technique? (seed or clone?)
What is the age of your plants?
How long have they been in the soil mixture they are in now?
Were they in the same mixture when they were seedlings/smaller plant? If not, what mixture were they in before?
How Tall are the plants?
What PHASE (seedling, vegetative or flower) are the plants in?
What Technique are you using? (SOG,*SCROG*etc)
What size pots are you using? (Include how many subjects to pot)
What substrate/medium are you using? What brand of soil mixture are you using?(percentage of perlite, vermiculite...etc?)
What brand Nutrient's are you using?
How much of each nutrient are you using with how much water? *Knowing the brand is very helpful*
How often are you feeding?
If flowering, when did you switch over to using Bloom nutrients?
What order are you mixing your nutrients? (example: veg nutes 1st, bloom 2nd ect)
What is the TDS/EC/PPM of your nutrients used?
What is the*pH*of the "RUN-OFF"?
How often are you testing*pH/ppm/EC/TDS?*
What method of*pH*test was administered? Using Strips?*pH*pen?
How often are you watering?
When was your last feeding and how often are you feeding?
What size bulb are you using?
How old is your bulbs?
What is the distance to the canopy?
What is your RH Factor? (Relative Humidity)
What is the canopy temperature?
What is the Day/Night Temp? (Include fluctuation range)
What is the current Air Flow? (cfm etc.)
Tell us about your ventilation, intake exhaust and when its running and not running ?
Is the fan blowing directly at plants?
Is the grow substrate constantly wet or moist?
Is your water HARD or SOFT?
What water are you using? Reverse Osmosis (RO)? Tap? Bottled? Well water? Distilled? Mineral Water?
If using tap water, what is the ppm/EC/TDS of the water right out of the tap?(Only if you have a tds pen)
If using RO,Distilled,mineral water, what is the ppm/EC/TDS without any additives?(Only if you have a tds pen)
Are you using water from a water softener?*
Has plant been recently pruned, cloned or pinched?
Have any pest chemicals been used? If so what and when?
Are plant's infected with pest's?


HYDROPONICS/Aero Ponics/Coco/Soiless/

How long has this problem been going on?
Are you growing in a PVC grow tent? (example: Hydrohut or any other non brand tents)
What system are you running? (DWC? Ebb flow? Aero? Water Farm? Flood Tables? and so on...)
What STRAIN are you growing?
What was the establishing technique? (Were the seed or clone?)
What is the age of your plants?
How long have they been in there mixture they are in now?(coco,soiless etc..)
How tall are the plants?
What PHASE are the plants in? (seedling, vegetative or flower) are the plants in?
What Technique are you using?
What substrate/medium are you using?(Hydroton, RockWool etc.)
What is the Water temperature?
What color are your roots? White? Brown? Are your roots slimy?
What Nutrient's are you using?(If growing soiless)
How much of each nutrient are you using with how much water? *Knowing the brand is very helpful*
How often are you feeding? (If using soiless)
How often are you giving nutrients? (If using soiless)
If flowering, when did you switch over to using Bloom nutrients?
What order are you mixing your nutrients? (example: veg nutes 1st, bloom 2nd ect)
What is the TDS/EC/PPM you are using
What is the*pH*of the "Tank"?
How often are you testing your*pH/PPM/EC/TDS?
Are you sure your calibration is correct on your equipment?
When was your last watering?
What is your water temps?
When was your last feeding change? (ie. grow-bloom-micro-additional)
How often do you clean your system: example: Flush out water replace with clean water and nutrients?
What size bulb are you using?
How old is the bulbs you are using?
What is the distance to the canopy?
What is your RH Factor(Relative Humidity)?
What is the canopy temperature?
What is the Day/Night Temp? (Include flucutaion range)
What is the current Air Flow? (cfm etc.)
Tell us about your ventilation, intake exhaust and when its running and not running ?
Is the fan blowing directly at plants?
Is your water HARD or SOFT?
What water are you using? Reverse Osmosis (RO)? Tap? Bottled? Well water? Distilled? Mineral Water?
If using tap water, what is the ppm/EC/TDS of the water right out of the tap?
If using RO,Distilled,mineral water, what is the ppm/EC/TDS without any additives?
Are you using water from a water softener?
Has plant been recently pruned, cloned off of or pinched
Have any pest chemicals been used? If so, What and When?
Are plant's infected with pest's??



I see bud rot get me some non yellow pictures as well ty

 

[goodsensy4all]

Here's pictures

 

[AgentPothead]

Well if they are nutrients for soil grows, they picked a really shitty name. "Advanced Hydroponics" I don't really use added nutrients in my soil grows. I only respond to deficiencies with added organics. Off the top of my head I can only think maybe the Canna Soil isn't playing nicely with the AH nutrients?

 

[goodsensy4all]

Well if they are nutrients for soil grows, they picked a really shitty name. "Advanced Hydroponics" I don't really use added nutrients in my soil grows. I only respond to deficiencies with added organics. Off the top of my head I can only think maybe the Canna Soil isn't playing nicely with the AH nutrients?

That's the point
Now waiting for changes, succesfully flush all plants.

 

[AgentPothead]

That's the point
Now waiting for changes, succesfully flush all plants.

Good luck buddy! I'll try to remember to check back in here see how they are doing.

 

[f-e]

A.P most organic growers don't have large enough pots to meet the plants demands. They exhaust the substrate then turn to instantly available feeds. We are sold the idea of feeding the microherd with additives in the feed, but the feed generally has an npk value, and all the rest. It's why we see instant results when people use them.

The canna terra is a very weak compost. Not regular soil. It's not meant to be used on it's own. You always use some feed. The terra feed is well balanced and is proven to work in coco. You can't use the coco feed in terra though. Not even for a few days.

Looking at this again, I see a fair few issues. One being P which isn't really push out by anything. If this weak terra compost has been getting a half strength feed, at this level of plant development, perhaps it's going quite well considering. I have used other soil feeds on terra, but not an all round feed. This fact the feed isn't really suited, coupled with the idea I'm having that no ec meter is present, leaves me at a loss diagnostically.

I would think about a $10 ec meter (or if your serious about your future as a grower, a truncheon) and the proper terra feed. The meter is really quite indispensable though.

Look at the K pics https://www.icmag.com/ic/showthread.php?t=231387
You have P and K issues in flower. That seems reasonable. Some Ca signs. No Mg though, which in my mind is the K Ca Mg triangle. They all lock the others out. You could have a lot of Mg, but it's very soluble. Need that ec meter..

 

[Creeperpark]

YOU burned the shit out of your plants using the wrong stuff and It can't be fixed now. So Sorry!!

 

[mr.brunch]

Did you say you are just feeding them, no waterings in between?
If so , that’s the problem... I’d always do 2 clear waterings between feeds

 

[f-e]

Did you say you are just feeding them, no waterings in between?
If so , that’s the problem... I’d always do 2 clear waterings between feeds

No it's canna terra buddy, you feed every time. Terra is like a hydro crop with a soil taste. It's not a nutrient rich compost. You can run a high pH and low light grow with it for a few weeks, but it gets exhausted. You have to introduce feed, and as you do so, lower the pH. Until it's getting getting a feed with an ec around 1.3 at around pH 6.5

You only need to scale the ec/pH if you are using week lights. If you are just getting on with it, then on with the main lights, and feed them properly. An ec of 1.3 isn't much for a plant that's actually growing. Lashing loads of ec1.3 at pH6.5 though will ensure that that's what you have in the substrate. The terra food works in coco, it's well balanced.

Soil/compost methodologies don't apply rigidly to canna terra. It's about half as strong as light-mix. So if it's buggered, it's not the end of the world. As a huge proportion of your feeding regime is hydro like growing.

I like it, I used it for quite some time. It didn't like the feeds my supermarket and garden center composts liked though. It liked it's own. It's a stand-alone growing method in my opinion. Though other well balanced feeds from organic sources would surely work.