someone poison my plant

[timmypark]

Hello Master growers,

5 weeks into flower and this happens. Who is responsible for this? how can I find this corporate and give them a good lesson.

Suspicion : 8 days ago full strength watering with 1000ppm with additional 200ppm of nitrogen because I notice the bottom leaf are yellowing.

Last watering was a complete flush with 350ppm of calmag after noticing the bronze leaf. Today this is what i saw when I woke up.

by the way, im using RO water.

Also, HELPPPPPP!

 

[Kush Technician]

Did you check your run-off ph and ppm? Peat? Coco? I think more info is needed.

 

[timmypark]

growing in coco, ph is 6.0, run off is 6.2. ppm run off, didnt check.

Im pretty sure its a boron deficiency according to this guy

here is the source: http://www.420magazine.com/forums/p...abis-plant-pest-problem-solver-pictorial.html

let me know what you guys think

 

[Hammerhead]

I would flush her then use a product like revive...I dont like AV products but this is one that really worked for me for micro nutrient deficiencies.

 

[timmypark]

i did a flush 3 days ago, problem got aggressive.

 

[Hammerhead]

how much flush ? you need to do allot of water. read the runoff this will tell you when you have flushed enough

 

[rives]

Where's SeaMaiden? Not really my forte', but it looks more like a potassium def to me - boron should impact the growing shoots, not the lower leaves.

 

[timmypark]

okay, I have few option.

1. Use AN revive for foliage, with the combination of my of regular feeding.

2. Flush again and then continue with regular feeding (but this time minus the extra 200ppm of nitrogen)

3. Use boric acid because maybe its boron def.

4. DO 1,2,3 all together

5. toss it at a gas station and let it be someone else problem.


Who wants to pull the trigger?

 

[siftedunity]

the id lower the ph a little to between 5.6 and 6. apart from that I don't use RO so I cant help

 

[timmypark]

I just water with regular feeding today.

 

[Hydro-Soil]

1000ppm + 200ppm of nitrogen?

Ouch!

Cannabis is really picky about nitro in flower. Gonna make for some stemmy buds there. Reports also show a direct correlation between high nitrogen and low thc production.

Don't know how to fix that one really... unless a good flush would do it? Not experienced enough with soil to know.

Stay Safe!

 

[timmypark]

1000ppm + 200ppm of nitrogen?

Ouch!

Cannabis is really picky about nitro in flower. Gonna make for some stemmy buds there. Reports also show a direct correlation between high nitrogen and low thc production.

Don't know how to fix that one really... unless a good flush would do it? Not experienced enough with soil to know.

Stay Safe!

Its coco. yeah I thought the 200ppm was the corporate. Ill update with new pics soon

 

[resinryder]

What nute line are you using?

 

[Kush Technician]

when in doubt, flush with 1/4 strength nutes. A well-balanced base nutrient in the right ph should provide the plant with everything it needs. 1200 ppm is pretty strong, unless it is a strain you are confident can handle it. I regularly feed about half that and do just fine, no need to flush ever except at the very last week or so.

 

[rives]

1200 ppm is pretty strong, unless it is a strain you are confident can handle it.

What scale is everyone using? At .5, it is very strong, at .7 it is about where most of my strains like it during flower, and at a straight EC of 1.2 it is far too low for flowering for my strains.

 

[Hydro-Soil]

What scale is everyone using? At .5, it is very strong, at .7 it is about where most of my strains like it during flower, and at a straight EC of 1.2 it is far too low for flowering for my strains.

This completely changes, depending on the profile of your nutrients.

The closer I get to 8/16 lucas ratio (1:2?), the higher ec my plants can take without showing any signs of burning or stress or slowdown in growth. I still get a MUCH better product (and same weight) by NOT pushing to that maximum and staying at the level that initially produced the fastest growth. No more.

I can give the exact same strength to seedlings only 10 days old under full strength lighting.

Change that balance (like using MaxiBloom, which is *close*) and I have to lower the ec across the board, especially with smaller/younger plants... or burning occurs. Same plants, same light, same setup.

Stay Safe!

 

[rives]

This completely changes, depending on the profile of your nutrients.

I think that you misunderstood what I was trying to say, HS. I was pointing out that without stipulating which scale is being used to measure the nutrient strength, there is no way to tell if the mix is strong or weak.

 

[timmypark]

What nute line are you using?

SBA,SBB
dynobloom
carboload
ginormous

Here are the updates growmasters. These comparisons photos are 2 days apart.

Necrosis spreading like wild fire on old leaf and new bud leaf. Flushed with 2 gallon of RO with spike calmag of 350ppm into this 2.5 litter pot last week and necrosis still spreading. Problem is still aggressive after regular feeding.

My next move, its Boron deficiency, treat deficiency with boric acid on next watering.

 

[rives]

I still think that you are chasing the wrong deficiency, but I'm a hell of a lot better electrician than I am a botanist. This is from a drill-down symptom paper that I saved -

POTASSIUM (K)
Affected plants are usually tallest and appear to be most vigorous. Necrotic spots form on lower leaves. Red stems. Leaves appear pale or yellow. Add chemical fertilizer containing K. Suggested ppm – Growth, low light: 250–350, intense light: 150-250. Flowering, low light: 120-220, intense light: 100-200.

BORON (B)
Growing shoots turn grey or die. Growing shoots appear burnt. Treat with one teaspoon of Boric acid (sold as eyewash) per gallon of water. Suggested ppm - .5 – 5.0, 1.0 usually max.

Good luck.

 

[timmypark]

I still think that you are chasing the wrong deficiency, but I'm a hell of a lot better electrician than I am a botanist. This is from a drill-down symptom paper that I saved -

POTASSIUM (K)
Affected plants are usually tallest and appear to be most vigorous. Necrotic spots form on lower leaves. Red stems. Leaves appear pale or yellow. Add chemical fertilizer containing K. Suggested ppm – Growth, low light: 250–350, intense light: 150-250. Flowering, low light: 120-220, intense light: 100-200.

BORON (B)
Growing shoots turn grey or die. Growing shoots appear burnt. Treat with one teaspoon of Boric acid (sold as eyewash) per gallon of water. Suggested ppm - .5 – 5.0, 1.0 usually max.

Good luck.

you are right, I will spike the feeding with potassium