Potassium Deficiency in Plants

Potassium Deficiency in Plants Notes:

Potassium (K) is a macronutrient.
Potassium Deficiency

Symptoms:
Yellowing between veins of leaf (Interveinal chlorisis). Reduced flowering/fruiting. Leaf tips can look burnt or black.
Sources:
Potassium carbonate or potassium hydroxide (pearl ash, potash).
Notes:
This will raise PH, so add Potassium slowly and test every few days.
Warning:
Heavy metals added to a closed loop system will ruin an aquaponics system.

Photo Credit: http://en.wikipedia.org/wiki/Potassium_deficiency_(plants)

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