Cold waterlogged fields, gleying: soil is cold, roots don’t grow
Blue-grey soil and standing water. That’s gleying, not ‘needs more urea’.
- Cold soil, long saturation, a grey-blue layer.
- Spring seedlings sit.
- Mountain-cold paddies are the type.
- Cold-soaked paddies often ride with phosphorus shortage, but the root cause is cold and wet.
- Disease has spreading lesions; cold soak stalls the whole field.
- Don’t treat a cold gley as simple hunger; don’t block drains for one crop.
- Drainage: Drop the groundwater and the cold soak. Engineering follows local advice
- Name what you see before you feed.
- If leaves, roots and the surface disagree, stop.
What you see in the field
Cold soil, long saturation, a grey-blue layer. Spring seedlings sit. Mountain-cold paddies are the type.Is the soil wet or dry, the root white or black? Wet wilt and a foul root mean drain first. Leaf wilt with white roots may be drought. Smell the root before you irrigate.
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 “Phosphorus stall”
Cold-soaked paddies often ride with phosphorus shortage, but the root cause is cold and wet.
Looks like “Disease”
Disease has spreading lesions; cold soak stalls the whole field.
Do this / don’t do that
- 1Cold soil, long saturation, a grey-blue layer. Spring seedlings sit. Mountain-cold paddies are the type.
- 2Ditch, drain, rotate wet-dry, warm the soil. Band phosphorus by the root. Don’t pour nitrogen at the first stall.
- 3Don’t treat a cold gley as simple hunger. 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 treat a cold gley as simple hunger; don’t block drains for one crop.
Rate range
Drainage
Drop the groundwater and the cold soak
Engineering follows local advice.
Phosphate fertiliser
Band it, follow a soil test
Cold soil makes phosphorus less available.
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 Cold soil, test. Write the field and the date on the bag.
Lesson video
2026-03-21 · 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