Special Kush 1# Problem

Tippe auf Magnesiummangel. Sollte alte Blätter eher betreffen als junge.

Looks like new growth is effected first but hard to tell from one single picture. 3 nutrients can cause interveinal chlorosis. (interveinal chlorosis) is usually indicative of manganese, iron or magnesium deficiency. Iron deficiency affects the youngest leaves first, whereas the symptoms of manganese and magnesium deficiency tend to start in the older leaves. Iron is only one to start from top. Iron deficiency leads to a pattern of yellowing called interveinal chlorosis – a yellowing of the tissue between the veins while the veins remain green. This striking contrast becomes apparent on the youngest foliage first. In extreme cases, the tissue may turn brown/dark, and plants may be stunted. Iron deficiency can occur during periods of high plant stress or heavy growth. It can be caused by: Soil pH High soil pH can bind iron in the soil, making it unavailable for root absorption Excessive watering, poor soil drainage, high salt content, and cold soil temperatures can prevent root uptake of iron. Excess concentrations of phosphorus, manganese, zinc, and copper in the soil can exacerbate the problem. Iron deficiency can be corrected by applying iron chelate to the soil or leaves. Iron chelate is a powder that can be dissolved in water and applied to the soil or leaves. Can tell you what symptoms show up as for the root cause and solution. We need a proper diary and more pictures for diagnosis and treatment.