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6 Oct 2026 · 1 min read · Methods

Reading soil moisture in pot trials: from seedling to a pot-by-pot check

Reading soil moisture in pot trials: from seedling to a pot-by-pot check
Reading soil moisture in pot trials: from seedling to a pot-by-pot checkNov 2024 — a young blackgram seedling in its pot, staked and labelledNov 2024 — rows of potted seedlings under cover, each with its own stakeDec 2024, midday — probe in the soil, meter reads 32%Dec 2024, midday — a second pot, meter reads 29%Dec 2024, midday — a drier pot, meter reads 15%Dec 2024, midday — the meter shows its wet-soil icon

Pots make it easy to control water, but only if you measure it. These photos follow blackgram pots from young seedlings to a side-by-side comparison of plant condition.

From seedling to pot

In November 2024 the seedlings were moved into individual pots, each with a stake and a label, and kept in rows under cover so every pot could be tied back to the field book.

One round of readings

On a single midday round in December 2024, a soil moisture probe went into four pots within about eight minutes. The readings spread from a dry 15% up to a wet-soil reading on the meter. Pots that look the same on the surface can sit far apart in moisture, so the number on the meter is worth more than judging by eye.

What the comparison shows

The cover photo (February 2025) puts three pots next to each other. The plant on the left is full and green, the middle one is thin and sparse, and the one on the right has dried leaves. Keeping a probe reading with each photo makes a comparison like this much easier to interpret later.

Habits worth keeping

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