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Building organic matter on sand: little and often, not one mountain

A dump of manure on sand salts and then disappears.

Thin organic matter
Speed
  1. A mountain of dung today is still a sieve tomorrow.
  2. Sand falls apart; packing is hard. The aims are opposite.
  3. Dirty manure is high-salt; sand feels it more.
  4. Don’t pour a clay-sized organic dressing once; don’t count raw manure as the same thing.
  5. Organic manure: Keep putting it on locally, split, less than one clay dose. It must be rotted
  6. Name what you see before you feed.
  7. If leaves, roots and the surface disagree, stop.
  8. A sieve cannot hold a mountain.

What you see in the field

Sand leaks. A mountain of dung today is still a sieve tomorrow.Rub a handful next to a darker neighbour that still forms crumbs. Pale dusty soil that leaks after rain matches this page. Yellow leaves are extra — first ask whether the soil still has body.

A sketch. Do not fertilise from the picture alone.

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 “Hard-packed soil”

    Sand falls apart; packing is hard. The aims are opposite.

  • Looks like “Salt injury”

    Dirty manure is high-salt; sand feels it more.

Do this / don’t do that

  1. 1Sand leaks. A mountain of dung today is still a sieve tomorrow. Compare the worst plants with a neighbour ridge before you add a bag, or the next step will chase the wrong thing.
  2. 2Split rotted manure, mulch, split irrigation and nitrogen. Don’t dump a year in one day.
  3. 3Don’t pour a clay-sized organic dressing once. 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 pour a clay-sized organic dressing once; don’t count raw manure as the same thing.

Rate range

Organic manure

Keep putting it on locally, split, less than one clay dose

It must be rotted.

Top-dress

1–2 more times than clay, each time smaller

The total still follows a soil test.

These are ranges. Confirm with your local extension station and the product label.

Organic matter

The film on the sieve

Sand starts low. Watch the trend.

CEC

Whether it can hold on

Low: little and often.

When you see Sand leaks. A mountain of dung today is still a sieve tomorrow, test. Walk an S and mix — one hole is not the field.

Lesson video

2026-03-23 · 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