K
Time to start the flowering ferts. A week ago I gave mine some manure tea, MG Bloom ferts 15-30-15 and some epsom salts for a calcium/mag boost. They are in a transition phase now. They want some more phosphorus, potassium, cal/mag and manganese. That is what I think is happening. There is not anything really bad going on. That plant just absorbed what it wanted from the older fan leaves.
I like using things like MG or Peters fertilizer mixes because they have manganese, some iron and other stuff. Transition time where they are getting ready to trigger and start flowering is a time where you can really help your yield and overall plant health for late flowering.
The plant isn't starving as evidenced by you saying it is otherwise green. This is like a pregnant female with a craving. I think the craving is for K-P and manganese and good old MG or some manure tea can give her what she wants.
Septoria spp, also called black spot disease. Seen it, dealt with it. Different species affect leaves in slightly different ways, but they all have some things in common. Those commonalities are; formation of necrotic spots on lower leaves, lower leaves yellowing and dying with yellowing working its way up the plant. Vector is always the same--splashing water from the ground onto the plant. Control is the same--anti-fungals (I used Kop-R-Safe @ double strength to eradicate), removal of ALL affected leaf material, prevent any splashing of water from ground onto plants.hmmm that doesn't look like a deficiency at all... looks like some form of fungal disease me.
possibly early blight????
http://www.planetnatural.com/site/xdpy/kb/early-blight.html
use quantum growth!
Septoria spp, also called black spot disease. Seen it, dealt with it. Different species affect leaves in slightly different ways, but they all have some things in common. Those commonalities are; formation of necrotic spots on lower leaves, lower leaves yellowing and dying with yellowing working its way up the plant. Vector is always the same--splashing water from the ground onto the plant. Control is the same--anti-fungals (I used Kop-R-Safe @ double strength to eradicate), removal of ALL affected leaf material, prevent any splashing of water from ground onto plants.
King Kong, you've dealt with the vectors, yes?
I am very incredulous that this is a deficiency alone.
I am fairly certain, even though its initial presentation was so odd, for several reasons. But as I followed the progression of symptoms, I kept coming back to some species of Septoria.I was referring to KK's. Was yours outside, bigger older leaves that yellowed some first and then got degraded and the rest of the plant was healthy it would be the same. If they got sickly and spotted while green and it involved leaves all over the plant than that would be a different problem.
I have seen black spot disease before. It usually starts by infecting leaves in the same area big and small. Plants with black spot look bare and straggly during late summer or early fall and the other plants look normal. It will flower but the flowers hardly develop and get discolored.
I am sure it can look different from case to case and plant species to plant species. So I don't doubt your assessment. If a person thinks they have black spot, even if they are wrong about the exact one it is still probably another fungus. So when they treat for black spot it knocks out the fungus they have.
Yours just doesn't look like black spot disease to me. They have some black spots the size of a pencil eraser in the green and then yellows around them while half or more of the leaf can still be green. Then the whole leaf can yellow.
If you have a 6 foot pot plant the lower leaves are going to be 3 feet off the ground. It is hard to get splashed. A person should be pruning lower growth and all surrounding vegetation under their plant anyways to keep air circulating.
Why do you think you had black spot disease?
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