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Test-based fertiliser

Test-based fertiliser is a method, not a universal recipe.

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  1. Test-based fertiliser。
  2. Test-based fertiliser is a method, not a universal recipe.。
  3. Test first, then decide what and how much. Soil taken badly poisons every later decision.。
  4. Test first, then decide what and how much. Soil taken badly poisons every later decision.。

How it appears on the sheet

Test first, then decide what and how much. Soil taken badly poisons every later decision.

A sketch. Do not fertilise from the picture alone.

Common units

The recipe has no unit. Read sampling depth and the soil:water ratio first.

How to read the number

Test first, then decide what and how much. Soil taken badly poisons every later decision. Mix many cores of the tilled layer. Read pH, OM, salt, then NPK Easy to mix up: Leaves can guess; they cannot replace a test. A neighbour’s bag is not a formula Test-based fertiliser is a method, not a universal recipe.。

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

Test first, then decide what and how much. Soil taken badly poisons every later decision.

Don’t do this

  • One hole at the edge as the whole field.
  • A missed decimal, then a bag.
  • Leaves can guess; they cannot replace a test. A neighbour’s bag is not a formula.

Lesson video