Available Fe
Available Fe is iron the root can eat. Dumping ferrous sulphate on high-pH soil often fails this season.
- Available Fe。
- Available Fe is iron the root can eat. Dumping ferrous sulphate on high-pH soil often fails this season.。
- Fe hits new leaves: yellow with green veins, worst at the tip. Old leaves stay greener.。
- Fe hits new leaves: yellow with green veins, worst at the tip. Old leaves stay greener.。
How it appears on the sheet
Fe hits new leaves: yellow with green veins, worst at the tip. Old leaves stay greener.
A sketch. Do not fertilise from the picture alone.Common units
Available Fe often mg/kg.
How to read the number
Fe hits new leaves: yellow with green veins, worst at the tip. Old leaves stay greener. High pH locks iron. The soil has iron; the root cannot eat it. Calcareous soils, grapes and citrus show it Easy to mix up: N yellows old leaves first; S yellows new and old; Fe yellows only new leaves with green veins Available Fe is iron the root can eat. Dumping ferrous sulphate on high-pH soil often fails this season.。
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
Fe hits new leaves: yellow with green veins, worst at the tip. Old leaves stay greener.
Don’t do this
- Yellow chased with urea.
- Ferrous sulphate dumped on high-pH soil this season.
- N yellows old leaves first; S yellows new and old; Fe yellows only new leaves with green veins.