help, new growth is yellow and curling

K

Kronik707

New Member
I am growing in 65% coco and 35% perlite. My plants are from seed, water is 6.1 ph when I feed, EC is around 1.2 in veg. There is no deficiency’s in old growth. I am thinking it is broad or russet mites. Does anyone know what this is?
 

Attachments

SnoopyDoo

SnoopyDoo

Well-Known Member
Really can't tell if I see mite damage. Usually mites work their way up from the bottom. Looks like either general nute deficiency or iron or N.
 
Creature1969

Creature1969

Well-Known Member
What nutrients are you using? How often do you feed? How much runoff? Tap or RO water?
Looks like excess P/K issue to me and I see some Mg deficient leaves in there as well.
 
Rurumo

Rurumo

Well-Known Member
Ph is fine, so is the EC, the question is, how often do you feed? And do you feed calmag by any chance?
 
twentyeight.threefive

twentyeight.threefive

Well-Known Member
Kronik707 said:
I am growing in 65% coco and 35% perlite. My plants are from seed, water is 6.1 ph when I feed, EC is around 1.2 in veg. There is no deficiency’s in old growth. I am thinking it is broad or russet mites. Does anyone know what this is?
Click to expand...
Why would you assume bugs?

What are you feeding them?
 
D

Driver733

Well-Known Member
That looks perfectly normal to me. The newest growth shoots are always a bit yellow at first, then get green when they grow out a bit more.

The 3rd picture from the left looks a little yellow, but that could be the angle of the photo.

Otherwise, I really don't see anything to worry about for now.
 
K

Kronik707

New Member
Creature1969 said:
What nutrients are you using? How often do you feed? How much runoff? Tap or RO water?
Looks like excess P/K issue to me and I see some Mg deficient leaves in there as well.
Click to expand...
Advanced nuts with Golden Tree, watering about 3 times a week, 20% runoff. Tap water. I think your rite. It looks like a excess of potassium which is locking out iron. I just flushed with ph water and it looks worse. Any more advice?
 
Creature1969

Creature1969

Well-Known Member
Kronik707 said:
Advanced nuts with Golden Tree, watering about 3 times a week, 20% runoff. Tap water. I think your rite. It looks like a excess of potassium which is locking out iron. I just flushed with ph water and it looks worse. Any more advice?
Click to expand...
You're treating your coco like a soil grow. I suggest feeding at least once daily.
I'm thinking some coco broke down and released a bunch of P/K while robbing some Ca and Mg from your feeds. It's the nature of coco. Frequent feeding to adequate runoff prevents that from becoming a bigger issue over time.
What's your tap water PPM? Are you adding any calmag?
 
You must log in or register to reply here.
Top