Some Yellowin, Brownin, 3rd week flowering, outdoor

[cervantz]

Hello guys this is my first flowering plant (it IS one plant ), the first preflowers showed up like 3 weeks ago. its in soil, outdoor, ill try to fill the form but most of the questions are unknown to me .
I want to know if that yellowin is normal in the older leaves, cause im thinkin its goin up and some younger leaves (like in the middle of the plant) are starting to lose color too.
About the burn looking brown leaf, well i tryed a flush some days ago and the symptoms has slowed a lot, but it looks vry much like a P def to me?
As u can see im pretty much confused, any help will be vry appreciated.

What STRAIN are you growing: Bag Seed.
What was the establishing technique: Seed
What is the age of your plants: 12 Weeks
What PHASE are the plants in: 3 weeks in flowering
What Technique are you using: Outdoor, Soil
What substrate/medium are you using: Coco Fiber and some prepared soil.
What is the Nutrient temperature: Unknown
What Nutrient's are you using: Organik, 12-3-9 and 1.5-12-3.
What is the TDS/EC/PPM you are using: None
What is the pH of the "Tank": Unknown
When was your last watering: 3 Days ago
When was your last feeding change: 3 Weeks ago, Veg to Flower
What is the Day/Night Temp: 31º C - 18º C
Has plant been recently pruned, cloned off of or pinched: No
Have any pest chemicals been used? If so, What and When? No
Are plant's infected with pest's: No

Ps. I changed from vegetative fert to flowering fert in the first day i noticed the preflowers, maybe it was to soon and now it lacks on N?

Ty vry much for ur time.

 

[Blackvelvet]

Looks magnesium deficiency...Is there magnesium in your ferts or dolomite lime in your soil mix? Try drenching the soil with 2 teaspoons epsom salts per gallon (3.8L) of water.

 

[Core]

yes sproutco is right .....it looks like Mg def....

 

[nycdfan042]

Does that container have drain holes at the bottom??? and when you feeed, do you feeed enough water/nutrient solution to have 10%@ run off at the bottom??where does your run off go?
Did you use dolomite lime on your medium??
You should try to get a water ph testing kit, wich comes with ph solution and small strips of paper(like a litmus test)
---------> https://orderform.microessentiallab.com/index.php?productID=1129
its cheap and works very well.
And finally what nutrients specifially are you using and how do you mix them?

 

[cervantz]

Thanks Blackvelvet and Core, I have epsom salt here ill try feedin the plant.

Thanks nycdfan, my pot does have holes at the bottom and i do let some run off, that i trow away.
About the dolomite, well, when this plant was like 3 or 4 weeks old i transplanted it to a new soil as the old one was a vry poor one. I prepared the soil with double of the recomended dosage of dolomite (by mistake), and 1 week later the plant started to show a strange symptom ,the larger leaves started to turn into a white/silver color. I figured the dolomite overdose and flushed it, the plant responded vry well. And like 1 more week i started using this fert i use today. Its called Organik by Natural Products, a spanish fert for cannabis.
I mix it as the label says, but im aways afraid of overfeedin the plant and aways mix to some more water before givin to the plant.
Ill try to find some cheap ph tester at my place like the one u showed, because buyin an expensive one for just one plant isnt worth it i think.

im uploadin 2 more pics, 1 of the fert im using and another close up in one of the biggest leaf of the plant (showing mg def like symptoms?).

Ty every1 again.

 

[cervantz]

guys she keeps yellowing

guys she keeps yellowing

Hello guys, i gave her some Mg two days ago, but looks like she keeps yellowing, shes in the 3rd week of flowering, maybe its just normal yellowing??
Should i feed her some veg fert for some N?
Ill upload a pic of today so u can see shes much more yellow (regard the light that makes it looks even more yellow).

Thx!
Keep it Growing

 

[wildheart]

Magnesium deficiency bummers...

Magnesium deficiency bummers...

Hi Cervants,

Magnesium deficiency is a bummer becuase it can generally take a few weeks to start showing up. First week or two everything is going great guns but then third week things slow down, lower level older fan leaves begin to wash out in color, soon start to appear burnt at their tips, and key to this deficiency, the leaves will beging to CURL UP! This condition, in my experience will begin to make its way further up the plant over the course of the next two weeks.

This was maddending to me because in the same environment I was starting seeds (successfully) and rooting clones, again successfully. In consultations with AmericanAgritech and Genral Hydroponics I learned that magnesium is the building block in the leaves cell structures that allows for photosynthesis to begin, an essential building block of chlorophyl and photosynthesis. This is why it takes almost a month to realize you have a problem - this is why seeds will start happily and well - clones will root happily and well also.

I strongly reccomend American Agritech's Botanicare product called Cal-Mag as opposed to epsm salts - have found way too many conflicting recipes on the internet about epsom salts. If what you are doing is really worth the time and energy you are putting into it then I recently drawn the conclusion that you should know and understand your water situation to an EXTREME degree. I now PH and TDS test my water prior to addition of anything, and then again subsequently in order to ensure that my plants are always getting water at a PH of around 6.7 to 6.8. Apparently, less than 6.3 or 6.4PH and magnesium begins to be locked out!

The happiness of those clones and seed plants was driving me nuts!

Best regards,


Wildheart