Wondering what deficiency this might be or is it natural kill it is on the bottom more shaded leaves. The top on one cola is turning a bit yellow with brown edges on leaves. My guess is it needs more potassium or phosphate so it's stripping the lower leaves for it . Let me hear you all
where was that leaf taken from, near the top? Is is one of several like this, or just a few/one? Symptoms could be K defc., but I need more pics of leaves, affected areas, light distances, nute feeds/sched./dosage,...
vermins! Look into Mosquito Bits