Can film or straw mulch loosen hard soil
Mulch is an umbrella for raindrop smash, not a plough.
- Cover stops raindrop smash and evaporation; the pan is still underneath.
- Film is an umbrella, not a pickaxe.
- A cover feeds structure; deep loosening breaks the lid. Two jobs.
- A cover can hold weeds down, but it is not the whole soil change.
- Don’t wait for film to melt a pan; don’t leave residual film to stack.
- Straw mulch: Even. Don’t heap it in stacks. Change the soil and hold moisture
- Name what you see before you feed.
- If leaves, roots and the surface disagree, stop.
What you see in the field
Cover stops raindrop smash and evaporation; the pan is still underneath. Film is an umbrella, not a pickaxe.When a hoe bounces or footprints sink, dig twenty centimetres and look for a shiny hard pan. Roots that turn sideways count. Cracked dust is extra. Keep machines off wet soil.
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 “Deep loosening”
A cover feeds structure; deep loosening breaks the lid. Two jobs.
Looks like “Weeding”
A cover can hold weeds down, but it is not the whole soil change.
Do this / don’t do that
- 1Compare the worst plants with a neighbour ridge. Photograph whole plant, close-up and soil surface before you add fertiliser.
- 2Match roots, leaves and the soil surface to this guide. If they do not line up, do not copy a bag count.
- 3Use the rate range on this page only as a range. Confirm with a local station and the product label.
Don’t do this first
- Don’t wait for film to melt a pan; don’t leave residual film to stack.
Rate range
Straw mulch
Even. Don’t heap it in stacks
Change the soil and hold moisture.
Plastic film
Follow local advice, and take it back after use
Leftover film wraps roots.
These are ranges. Confirm with your local extension station and the product label.
When you see Cover stops raindrop smash and evaporation; the pan is still underneath. Film is an umbrella, test. Write the field and the date on the bag.
Lesson video
2026-03-07 · 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