Soil Health · April 2025 · 4 min read
Soil texture—the proportion of sand, silt, and clay—determines how your soil holds water, drains, and responds to tillage. The soil texture triangle is a simple tool that classifies your soil type based on these three particle sizes.
Sand particles are the largest and create pore spaces that drain quickly but hold little moisture. Clay particles are the smallest, holding water and nutrients tightly but draining slowly and compacting easily. Silt falls in between and contributes to fertile, workable soils when present in balanced proportions with sand and clay.
Fill a quart jar one-third full with soil, add water and a teaspoon of dish soap, shake vigorously, and let it settle for twenty-four hours. Sand settles in the first minute, silt in the next few hours, and clay remains suspended the longest, forming distinct layers. Measure each layer to estimate percentages and plot them on the texture triangle to find your soil class.
Sandy soils benefit from organic matter additions and more frequent, lighter irrigation to compensate for low water-holding capacity. Clay soils need careful timing of fieldwork to avoid compaction and may benefit from gypsum applications to improve structure. Loam soils are the most forgiving but still respond well to cover crops and reduced tillage.
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