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Available K

Available K is this this season’s available nitrogen, not potassium in the rock.

Speed
  1. Available K。
  2. Available K is this this season’s available nitrogen, not potassium in the rock.。
  3. K the crop can use this season. Sand, high yield, straw removed — often low.。
  4. K the crop can use this season. Sand, high yield, straw removed — often low.。

How it appears on the sheet

K the crop can use this season. Sand, high yield, straw removed — often low.

A sketch. Do not fertilise from the picture alone.

Common units

Often mg/kg.

How to read the number

K the crop can use this season. Sand, high yield, straw removed — often low. Margin scorch is not only K. Read available K, and salt Easy to mix up: High total K, low available K: warehouse full, plate empty Available K is this this season’s available nitrogen, not potassium in the rock.。

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

K the crop can use this season. Sand, high yield, straw removed — often low.

Don’t do this

  • Every scorch gets potassium, salt unasked.
  • High-yield fields that never return straw.
  • High total K, low available K: warehouse full, plate empty.

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