Phosphorus (P)
Phosphorus is roots and flowering. The word is P; the field job is purple seedlings and pH.
- Phosphorus (P)。
- Phosphorus is roots and flowering. The word is P;。
- the field job is purple seedlings and pH.。
- Deficiency: purple, stunted seedlings, few roots. Warmth does not restart them.。
- Deficiency: purple, stunted seedlings, few roots. Warmth does not restart them.。
How it appears on the sheet
Deficiency: purple, stunted seedlings, few roots. Warmth does not restart them.
A sketch. Do not fertilise from the picture alone.Common units
Total P often g/kg. Available P is what the root can touch.
How to read the number
Deficiency: purple, stunted seedlings, few roots. Warmth does not restart them. Acid soils nail it with Fe/Al; calcareous soils nail it with calcium. The soil has P; the root cannot touch it Easy to mix up: N is even yellow; P is dark green with purple. High P also blocks zinc Phosphorus is roots and flowering. The word is P; the field job is purple seedlings and pH.。
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: purple, stunted seedlings, few roots. Warmth does not restart them.
Don’t do this
- Dumping phosphate on acid soil the root cannot touch.
- Purple seedlings chased with nitrogen.
- N is even yellow; P is dark green with purple. High P also blocks zinc.