Texture of Soil - Soil Sieve (Leaving Cert Agricultural Science): Flashcards

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Texture of Soil - Soil Sieve
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Soil texture definition

Relative proportions of sand, silt, and clay particles

Soil particles from largest to smallest

Sand, silt, clay

Typical soil sample weight for sieve method

100g (for easier percentage calculations)

Which mesh size goes at top of sieve stack?

Largest mesh (2mm)

Duration to shake sieves

Approximately 10 minutes

Formula for soil fraction percentage

Weight of fractionTotal weight×100\frac{\text{Weight of fraction}}{\text{Total weight}} \times 100

Sandy soil drainage and fertility traits

Excellent drainage, lower fertility

Clay soil fertility and drainage traits

Higher fertility, drainage problems

Loam soil characteristics

Balanced mixture, ideal growing conditions for most crops

Required state of soil sample before sieving

Completely air-dried

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