The boundary of soil disinfection: after you kill, you have to feed
A sterile bed is not a living bed. Don’t tent and replant the same crop as a habit.
- Disinfect then replant the same host, and they return.
- Disinfect is medicine; nursing is the meal.
- Closing the house is physical heat; chemical sterilising is another kit.
- Sterilising is not fertiliser.
- Don’t immediately replant the same crop dense; don’t treat disinfection as a forever vaccine.
- Pre-harvest interval: Follow the label strictly. Don’t plant before the interval is up
- Name what you see before you feed.
- If leaves, roots and the surface disagree, stop.
What you see in the field
Disinfect then replant the same host, and they return. Disinfect is medicine; nursing is the meal.Walk the worst strip and compare a neighbour. Photograph the whole plant, a close-up and the soil surface. If those three do not line up, do not rush a bag. Lab numbers have to match the field.
Tap to enlarge. The caption says what to photograph. Missing field photos are marked as to-be-added.
Why it looks like this
The field looks like this because the root cannot take water or nutrients the usual way. Fix the soil condition first — drainage, salt, acidity, compaction or a salt of fertiliser — then a thin feed. Rates live in the range on this page; confirm with a local station and the label.
Easy to mix up
Looks like “A closed greenhouse heat”
Closing the house is physical heat; chemical sterilising is another kit.
Looks like “Fertiliser”
Sterilising is not fertiliser.
Do this / don’t do that
- 1Disinfect then replant the same host, and they return. Disinfect is medicine; nursing is the meal.
- 2Disinfect to spec. Nurse afterwards. Rotation beats endless disinfection. Products on the label via extension.
- 3Don’t immediately replant the same crop dense. Use the range on this page only as a range. Confirm with a local station and the product label.
Don’t do this first
- Don’t immediately replant the same crop dense; don’t treat disinfection as a forever vaccine.
Rate range
Pre-harvest interval
Follow the label strictly
Don’t plant before the interval is up.
Feed the soil after sterilising
Rotted manure
After sterilising, feed the soil.
These are ranges. Confirm with your local extension station and the product label.
When you see Disinfect then replant the same host, test. Walk an S and mix — one hole is not the field.
Lesson video
2026-03-14 · Li Zeyu · For learning. Serious damage: local agronomist or a soil test.
For learning only. Fertiliser and pesticide decisions need a local agronomist and a soil test.
Not sure? Photograph the field to identify the problem