Potassium deficiency ?

G

Green Refuge

Well-Known Member
Starting to see lightening around the edges which is indicative of potassium deficiency but its happening mostly on the mid to upper portion of the plant which is throwing me off. Any ideas ? Medium is roots organic original. Temps 70-78. Humidity on low side 25-50%. 4 bulb T5 in a 2x4. Been feeding it once or twice a week at 600 ppm and 6.5 ph. I have a soil ph pen I will use it Tonight to double check.
 

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G

Green Refuge

Well-Known Member
Nixs said:
My noob eye doesn't see any K deficiency.
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It's hard to see in the pictures but there's lighting/fading going on the edges of the leaves. I'm readying that's almost never K deficiency in veg but I'm not sure. A lot of conflicting info about weed deficiency.
 
Billytheluther

Billytheluther

Well-Known Member
Green Refuge said:
It's hard to see in the pictures but there's lighting/fading going on the edges of the leaves. I'm readying that's almost never K deficiency in veg but I'm not sure. A lot of conflicting info about weed deficiency.
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we will never know untill he tells us wat he feeds
 
Nixs

Nixs

Well-Known Member
Green Refuge said:
It's hard to see in the pictures but there's lighting/fading going on the edges of the leaves. I'm readying that's almost never K deficiency in veg but I'm not sure. A lot of conflicting info about weed deficiency.
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With my very modest experience, I have only noticed K def. in mid flower.
 
C

catdaddy516

Well-Known Member
It's looking like a mag issue. If you could, foliar feed with the solution you feed with or just some calmag plus if it's possible.
 
C

catdaddy516

Well-Known Member
Green Refuge said:
Update on bottom leaves. Top still has lightning around edges. I foliar sprayed epsom a couple times in the last week or so.
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At what strength?
Did you feed and foliar shortly after or are you just foliar feeding?

This is the plant that was displaying the same exact issue yours is displaying, but after feeding and some applications of foliage feeding my nutrient solution at 650ppms every few days, she was back on track.
F8E2E272-A739-46DA-8BA2-D7DC1AB42BA0.jpeg
Make sure you use a wetting agent and to get both sides of the leaves.
 
Last edited:
G

Green Refuge

Well-Known Member
catdaddy516 said:
At what strength?
Did you feed and foliar shortly after or are you just foliar feeding?

This is the plant that was displaying the same exact issue yours is displaying, but after feeding and some applications of foliage feeding my nutrient solution at 650ppms every few days, she was back on track.
View attachment 5074272
Make sure you use a wetting agent and to get both sides of the leaves.
Click to expand...
1 teaspoon per gallon. Foliar feed yesterday and today I watered the soil with 1 tspn per gallon. I wasn't trying flood the plant with mag but it's not showing signs of improvement so I'm increase the dose/frequency of epsom. I definitely need to invest in some yucca. I have a non ionic surfactant but I'm scared to try it on my weed plants. I use it with herbicides.
 
G

Green Refuge

Well-Known Member
catdaddy516 said:
Just to keep it simple, this is what I use daddio.
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Seventh Generation Free & Clear Liquid Dish Soap - 19 fl oz

Read reviews and buy Seventh Generation Free & Clear Liquid Dish Soap - 19 fl oz at Target. Choose from contactless Same Day Delivery, Drive Up and more.
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If the problem persist, try foliar feeding the food you use as well. If you're not too sure about at what strength, start out with 500 ppms.
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Appreciate it brotha. Coping that first thing in the morning.
 
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