Potassium (K)
Potassium runs water use and quality. The word is K; split scorch from white crust first.
- Potassium (K)。
- Potassium runs water use and quality. The word is K;。
- split scorch from white crust first.。
- Deficiency: old-leaf margins scorch like fire. The surface need not be white. Salt scorches too。
- usually with frost.。
- Deficiency: old-leaf margins scorch like fire. The surface need not be white. Salt scorches too。
- usually with frost.。
How it appears on the sheet
Deficiency: old-leaf margins scorch like fire. The surface need not be white. Salt scorches too, usually with frost.
A sketch. Do not fertilise from the picture alone.Common units
Total K often g/kg.
How to read the number
Deficiency: old-leaf margins scorch like fire. The surface need not be white. Salt scorches too, usually with frost. High-yield fields export a lot. Straw returns K. Chloride-sensitive crops prefer sulfate of potash Easy to mix up: Salt, chloride and drought all scorch margins. Read the surface and the root before you say K Potassium runs water use and quality. The word is K; split scorch from white crust first.。
Thresholds only, not a prescription. Rates live in the field guide. This page does not hand you a bag count.
What it looks like in the field
Deficiency: old-leaf margins scorch like fire. The surface need not be white. Salt scorches too, usually with frost.
Don’t do this
- Scorch treated as salt when the surface is not white.
- Straw hauled off, then blaming the soil for no K.
- Salt, chloride and drought all scorch margins. Read the surface and the root before you say K.