PLS 2 Day #11 Bulk Density Quizizz

How is bulk density calculated?

• By dividing the dry weight of soil by its volume

• By multiplying the dry weight of soil by its volume

• By adding the dry weight of soil to its volume

• By subtracting the dry weight of soil from its volume

What effect does cultivation have on bulk density?

• Increases bulk density

• Decreases bulk density

• Has no effect on bulk density

• Only affects bulk density in sandy soils

What does bulk density reflect about the soil?

• Soil color

• Soil's ability to function for structural support, water and solute movement, and soil aeration

• Soil temperature

• Soil pH level

What is one of the uses of bulk density measurements?

• To determine soil color

• To express soil physical, chemical, and biological measurements

• To measure soil temperature

• To calculate soil pH

What can high bulk density lead to in terms of soil erosion?

• Reduced soil erosion

• Increased soil erosion

• No effect on soil erosion

• Only affects soil erosion in sandy soils

What is the effect of freeze/thaw cycles on soil bulk density?

• Significantly increases bulk density

• Significantly decreases bulk density

• Has very little effect on bulk density

• Only affects bulk density in clay soils

What is the effect of soil depth on bulk density?

• Decreases bulk density

• Increases bulk density

• Has no effect on bulk density

• Only affects bulk density in sandy soils

Which soil texture has an ideal bulk density for plant growth of less than 1.40 g/cm³?

• Sandy

• Silty

• Clayey

• Loamy

Which conservation practice results in bulk density favorable to soil function?

• Consistently plowing to the same depth

• Using heavy equipment for building site preparation

• Cover crop

• Allowing equipment traffic on wet soil

What is one long-term solution to bulk density and soil compaction problems on cropland?

• Consistently plowing to the same depth

• Using heavy equipment for building site preparation

• Using cover crops, crop residues, perennial sod, and/or reduced tillage

• Allowing equipment traffic on wet soil