Plants with K deficiency?

[Sneakynorweegian]

I have a Tangie Auto from Barneys farm, Blue Kush from Dinafem and Dark Devil, Black Cream and Sweet Cheese all from Dinafem.

I have been getting burnt leaf tips on all of my plants late in flower. At first I thought it was nutrient burn so I flushed my plants and watered with just RO water with some Calmag for a few waterings. I then added some liquid nutrients at partial strength. I am growing in Happy Frog soil mixed with some Royal Gold amended COCO. I am using Roots Organics powdered and bottled nutrients. In the beginning I was only using the powdered nutrients until recently after I flushed the plants. I have been using Mammoth P and Great White intermittently as well. My tangie was the furthest behind in flower and had some weird growth. The buds grew in with white hairs but the ends of the hairs had orange and brown ends almost like they were burnt. I didn't feed this plant much as it seemed to halt growth every time I fed. I had a Lemon Haze that did the same thing but the lemon haze seemed to grow out of it faster. Now my tangie plant is showing the yellowing leaves, copper spots in the middle with burnt tips that consume the leaf from the tip inward. It almost doesn't have a pattern as it is doing this all over the plant but the burnt tips are at the top of the plant as well as the bottom. I was advised to flush the plant so I did and the yellowing and such got worse and so did the burnt tips of the leaves. I watered with some Great White and Calmag this morning. What do you guys think the issue is? Have I been underfeeding?

 

[Sneakynorweegian]

I have a Tangie Auto from Barneys farm, Blue Kush from Dinafem and Dark Devil, Black Cream and Sweet Cheese all from Dinafem.

I have been getting burnt leaf tips on all of my plants late in flower. At first I thought it was nutrient burn so I flushed my plants and watered with just RO water with some Calmag for a few waterings. I then added some liquid nutrients at partial strength. I am growing in Happy Frog soil mixed with some Royal Gold amended COCO. I am using Roots Organics powdered and bottled nutrients. In the beginning I was only using the powdered nutrients until recently after I flushed the plants. I have been using Mammoth P and Great White intermittently as well. My tangie was the furthest behind in flower and had some weird growth. The buds grew in with white hairs but the ends of the hairs had orange and brown ends almost like they were burnt. I didn't feed this plant much as it seemed to halt growth every time I fed. I had a Lemon Haze that did the same thing but the lemon haze seemed to grow out of it faster. Now my tangie plant is showing the yellowing leaves, copper spots in the middle with burnt tips that consume the leaf from the tip inward. It almost doesn't have a pattern as it is doing this all over the plant but the burnt tips are at the top of the plant as well as the bottom. I was advised to flush the plant so I did and the yellowing and such got worse and so did the burnt tips of the leaves. I watered with some Great White and Calmag this morning. What do you guys think the issue is? Have I been underfeeding?

 

[Sneakynorweegian]

 

[Sneakynorweegian]

 

[Sneakynorweegian]

These pics were taken a couple of days ago. the curled tips and yellowing has worsened since then. This was taken right before flush

 

[Syco79]

How long have they been in flower? From what you've said it sounds like their nearing the end, I'm no expert but I do know towards the end plants DONT need any extra nuits and they show all kinds of weirdness that can be mistaken for deficiency. I.E. yellowing leaves. Pistols, (white hairs) changing orange/ginger. Get yourself a magnifying glass and look at the Tricomes. Adding more nuits at this time can really damage your Baby's, again I'm not an expert. Hope this helps. Look through AFN everything we need to know is on here with good people that are Experts and always willing and happy to help. Good luck mate.

 

[Sneakynorweegian]

I am currently at roughly day 75ish. If you look at the close up pic of the tangie bud you will see that it has barely even started to produce trichomes yet.

 

[Syco79]

I see that after I wrote it. What's ur temp? I know when my temp got low it affected my plants seems like they slowed right down and Tricomes production seemed to almost stall.

 

[Sneakynorweegian]

my temps are low 80's during the day and mid to low 70's at night. I definitely had some serious heat issues about a month or so back

 

[Mañ'O'Green]

@Sneakynorweegian It sounds like you are feeding single nutrients at a time? This is a problem. When you fertigate - feed with water and nutrients - is when you want to add an increase of a needed element. You need to keep ALL elements in balance and in order to be in balance they must be included in your fertigation every time in at least these minimum amounts shown in the chart.

If you feed one or two elements by them selves they will wash the other nutrients away from the roots and then will be an overwhelming percentage of the nutrients presented to the plant. For Example Cal-Mag when too strong will lock-out K, C, Mg and B.

OF has some long term mineral additions that can be troublesome once the pot gets out of balance.

Fertigate with week 6 at 70% strength (leav out the Cal-Mag) then wait until the pot drys down to 50% water and water the pot, then wait until the pot drys down to 50% water and water the pot, Then fertigate according to what week you think the plant is in? So water, water, fertigate, repeat.