soil temperature
Earth's thermal reading
Soil temperature is the warmth or coolness of ground at a given depth, distinct from air temperature above.
It affects seed germination, root growth, and microbial activity, making it crucial for agriculture and ecology.
Gardeners check soil temperature before planting: Wait until soil temperature reaches 60°F before sowing tomatoes.
Measurements vary significantly with depth, season, and soil composition.
- frost depthGround's frozen zone thickness
- frost lineSoil's frozen zone limit
- root zoneSoil surrounding active roots
- germinationSeed's initial growth phase
- mulchProtective plant bedding
thermometer · seedbed · planting time · planting date · thaw · early spring · compost · heat absorption · heat retention · clay · moisture · growing season · permafrost · microclimate · sun exposure · tillage · earthworms · decomposition
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