Sick plants please HELP!!

[benzeno]

Grow outdoor,organic soil, perlite and humus (3:1:1).
The 2 plant, turn to yellow low green color and stop the grow. I have the other plants in the same soil and grow fine.

I think is the pH o not?


sorry for my english


thanks

bye

blue thunder

blue thunder

sensi skunk

sensi skunk

The stem have a diferent color more palid not green in the base

Look the other plants the first from the front are the sick plants

 

[MynameStitch]

That is because you are growing out different strains and all strains can be different, some like more food some don't, some can handle more pH issues some are very touchy and show problems when it changes.....

Can you answer some of these questions ? the more the better.
hOw much direct sunlight are they getting?
The one in the 3rd pics look like the entire plant is taken over by nitrogen....... also the leaves cupping can mean the humidity is low or it's getting hot or to much direct sun light..... to intense.
SOIL:
What STRAIN are you growing?
What was the establishing technique? (seed or clone?)
What is the age of your plants?
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? (percentage of perlite, vermiculite...etc?)
What Nutrient's are you using?How much of each? How Often? *Knowing the brand is very helpful*
What is the TDS/EC/PPM of your nutrients used?
What is the pH of the "RUN-OFF"?
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?
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.)
Is the fan blowing directly at plants?
Is the grow substrate constantly wet or moist?
Is your water HARD or SOFT?
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?

 

[Kr@kEn]

Looks like magnesium deficiency and possibly iron deficiency. Could be lockout too if you are overfeeding.

 

[MynameStitch]

Iron is a imobile element which means it stays on a part of the plant and does not move; iron does not take over the whole plant, nitrogen does, nitrogen is a mobile element which means the entire plant can be taken over.

Iron affects semi to newer growths not old. So there is no way it's an iron deficiency.

Magnesium on the other hand is mobile, so it can affect the whole plant, but if it does the veins will be green and the leaves will be yellow and I don't see from the pics he posted any traces of a magnesium issue going on...... Nitrogen yes, the yellowing leaves are an easy sign that nitrogen is at play here......

why is it being caused is the issue we need to find out....

 

[benzeno]

hOw much direct sunlight are they getting?

A: I think 6 to 7 hour per day, I move to recive more.

The one in the 3rd pics look like the entire plant is taken over by nitrogen....... also the leaves cupping can mean the humidity is low or it's getting hot or to much direct sun light..... to intense.

A: The wheather is very hot some plant die and streched the stem. The hot wheather is a posibility?? is very dry days but I the soil humudity is fine.
Please look the stem is streched and turn brown. I have the same problem in the pass
SOIL:

A: organic dirt, humus, perlite (3:1:1)

What STRAIN are you growing?
A:
A: Sensi skunk and blue thunder from reeferman, I have other sensi skunk in the same soil but is fine.

What was the establishing technique? (seed or clone?)

A: Seed
What is the age of your plants?
A: Two month
How Tall are the plants?

A: 30 cm
What PHASE (seedling, vegetative or flower) are the plants in?

A: vegetative
What Technique are you using? (SOG, SCROG etc)
What size pots are you using? (Include how many subjects to pot)
A: 26 liters
What substrate/medium are you using? (percentage of perlite, vermiculite...etc?)

A: perlite
What Nutrient's are you using?How much of each? How Often? *Knowing the brand is very helpful*

A: humus and when stop the grow use "citric abono" (abono para citricos) one spoon when the leaf turn yellow npk: 18-5-22

What is the TDS/EC/PPM of your nutrients used?
A: ???
What is the pH of the "RUN-OFF"?

A: ???
What method of pH test was administered? Using Strips? pH pen?
How often are you watering?

A: water from home.

When was your last feeding and how often are you feeding?
What size bulb are you 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 fluctuation range)

A: the day most hot of the this week are 31°C but fluctuation is 27° C in the day and 17° C in the night

What is the current Air Flow? (cfm etc.)
Is the fan blowing directly at plants?
Is the grow substrate constantly wet or moist?
A: yes

Is your water HARD or SOFT?

A: I think is more hard

Has plant been recently pruned, cloned or pinched?

A: no
Have any pest chemicals been used? If so what and when?

A: only organic pest control, Garlic barrier and BioMilbe "vegetable acidfat" (acidos grasos vegetales)
Are plant's infected with pest's?

A:Some trips

Sorry but I dont understand some question.


thanks bye

 

[Kr@kEn]

Well if you medium is constantly wet...
Overwatered more than likely. Wait until the top 6-8 inches of your soil is completely dry before watering.

You need nematodes to get rid of the thrips. The thrips are probably what is causing that black death on the leaves (which is why I thought you had an iron deficiency). Are you sure they are thrips? Because dealing with thrips is not an easy or cheap task.

 

[benzeno]

This time I use organic pest control to my plants, but the pest cause a fire I use piretrines or dimetoato.

thanks

 

[benzeno]

more help?

 

[dre86]

to me it seems that the colour of your plant is too light green. I would give her/him some Nitrogen.

 

[MynameStitch]

The stem that is brown, it looks like something rubbed up against it, like the rocks chaffed it and caused a wound.... if it gets worse than you got a problem, when a outdoors plant gets wounded, even if it's small; this leaves a open door for infection and other plant fungi and viruses to invade the plant.

The leaf cupping you are seeing means the plant is getting too much heat and it does not like it; and considering it's been dry the plant will be using more water and transpiring more and since it does not have enough the leaves dry out a bit and cup to try to stop the heat from getting the parts of the leaf that is the most dry; this is a protective mechanism the plant has, but unfortunately when it cups most of the time it will end up turning necrosis and the outer leaves will brown/tan and die; but only the affected part not the whole leaf.

You need to water them more if they are not getting watered enough from rain since you state it's been dry, outdoor plants need water when it is dry to help protect them from the dry heat.

I would recomend you getting something else to fert your plants, that nutrient is not balanced enough and will be too strong for your plants.... if you have access to a hydro shop your better off getting something from there if you can.

But do not listen to the back of the box for feeding instructions, if you listen to them you will surley burn your plants, the exception to the rule is if you use products like gh,canna and advanced nutrients.

Your fert is not balanced, it has too low P and high N and K, plants need to have a balance in order for all nurients to be absorbed properly; this also includes pH.

You really should get some pH test strips, when you water your plant you collect the water that drains from the bottom of the pot and put the strips in there.... it tells you the pH.

How often are you feeding them nutrients?
Your plants look more hungry to me than anything else, they need nitrogen. Like kraken said; you need to get rid of those thrips they will kill your plants quickly in large numbers.

You got some neem oil to cover your plants? That will help kill them off.

 

[benzeno]

Hi


Thanks Stitch.

Here more photos of the stem.
This plant die or can live?







bye

 

[MynameStitch]

The plant will live , but you gotta fix the nutrient problem otherwise the plant will slowly slowly die and not grow.

 

[benzeno]

Hi

I think to use foliar nutrient and "multicote" slow degradation nutrient (npk: 17-17-17)
I have good result in others plants.