Salt rising: after you water, the soil is whiter
Water that can’t leave brings the salt back up.
- After irrigation dries, a white film; margins worse.
- The wet-dry edge is whitest.
- Granular fertiliser shows grains; rising salt is an even white crust.
- Drought is dry with little or no frost; rising salt gets whiter the more you water.
- When to cultivate: Right moisture after a watering. Break the capillary
- Name what you see before you feed.
- If leaves, roots and the surface disagree, stop.
- Water is the lift, salt the passenger.
What you see in the field
After irrigation dries, a white film; margins worse. The wet-dry edge is whitest.Squat on the whitest, worst strip and scrape the crust. Compare with a neighbour that is still green. White crust plus scorched margins count; wilt without a crust may just be drought. Note whether the ditch actually runs.
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 “Fertiliser that never dissolved”
Granular fertiliser shows grains; rising salt is an even white crust.
Looks like “Drought”
Drought is dry with little or no frost; rising salt gets whiter the more you water.
Do this / don’t do that
- 1After irrigation dries, a white film; margins worse. The wet-dry edge is whitest.
- 2If you irrigate, irrigate through and give an outlet. Mulch and cultivate to cut capillaries. Spring is the season.
- 3Don’t follow a drying crust with another tiny drink. 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 follow a drying crust with another tiny drink.
Rate range
When to cultivate
Right moisture after a watering
Break the capillary.
Cover
Plastic film or straw
Cut evaporation.
These are ranges. Confirm with your local extension station and the product label.
How soon after a spray or a feed it showed
A 1–3 day burst looks more like spray injury / fertiliser burn.
When you see After irrigation dries, test. Mix several spots of the tilled layer; skip the edge and the manure heap.
Lesson video
2026-04-15 · 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