1. What is Soil Texture?

Soil texture refers to the relative proportions of sand, silt, and clay particles in a soil. These proportions determine the soil's physical properties and affect water retention, nutrient availability, and plant growth.

2. How Does the Calculator Work?

The calculator uses the soil texture triangle principle:

Where:

• Sand — Particles 0.05-2.0 mm in diameter
• Silt — Particles 0.002-0.05 mm in diameter
• Clay — Particles less than 0.002 mm in diameter

Explanation: The calculator classifies soil based on the USDA soil texture triangle using your input percentages.

3. Importance of Soil Texture

Details: Soil texture affects water infiltration, water holding capacity, nutrient retention, workability, and root penetration. Knowing your soil texture helps in proper irrigation and fertilization planning.

4. Using the Calculator

Tips: Enter percentages of sand, silt, and clay that add up to exactly 100%. Values should be determined through laboratory particle size analysis.

5. Frequently Asked Questions (FAQ)

Q1: How do I get accurate sand/silt/clay percentages?
A: The most accurate method is laboratory particle size analysis using hydrometer or pipette methods.

Q2: What's the difference between soil texture and soil structure?
A: Texture refers to particle size proportions, while structure refers to how these particles are arranged into aggregates.

Q3: Can I estimate texture by feel?
A: Yes, with practice you can estimate texture by rubbing soil between your fingers, but lab analysis is more precise.

Q4: Why does my total not equal exactly 100%?
A: The calculator requires exact 100% total. Check your measurements or lab results for errors.

Q5: What's the best soil texture for plants?
A: Loam (approximately 40% sand, 40% silt, 20% clay) is generally ideal as it balances water retention and drainage.