What are the largest mineral particles in soil?, Sand, Clay, Silt, Humus, Which soil component feels sticky when wet?, Sand, Clay, Silt, Humus, What is the role of bacteria in soil?, Provide oxygen, Add sand, Hold water, Break down material, Which ion is essential for root development?, Nitrate, Potassium, Phosphate, Calcium, What does loam soil contain?, Balanced mix, Only sand, Only clay, Only silt, How does clay affect water retention?, Drains quickly, Holds more water, Holds less water, No effect, What is humus?, Living roots, Water, Sand particles, Decomposed material, What is the effect of acidic soil on nutrients?, Enhances uptake, No effect, Locks up nutrients, Increases oxygen, What do large pores in soil help with?, Water retention, Root rot, Nutrient absorption, Drainage, What is the main benefit of good soil aeration?, Increases clay, Improves drainage, Reduces oxygen, Maintains biological activity, What happens to crops in waterlogged soil?, Roots may rot, Receive more oxygen, Grow faster, Increase nutrient uptake, What is the ideal pH for most crops?, Highly acidic, Highly alkaline, Neutral or slightly acidic, No preference, What does organic content in soil help with?, Increases sand, Holds nutrients, Reduces water, Adds clay, What is the texture of silt?, Gritty, Smooth, Sticky, Hard, What is the main function of nitrate ions?, Leaf growth, Root development, Flower formation, Disease resistance.

Soil Composition

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