In many soil profiles, the subsoil is high in clay, but is also quite permeable, allowing water to
percolate relatively well. Why? correct answers a blocky or sud-angular blocky structure may be
well developed
The water potential in soils is generally considered lower than that in the atmosphere correct
answers false
Houseplant-pots with holes in the bottom, each containing dry soils of different textures, were set
in a shallow tray of water. In which texture would moist soil most likely appear at the surface?
correct answers silty clay
Soil iron compounds do not contribute to _____ colors in soil correct answers black
Which of the following is a direct measurement of water content correct answers gravimetric
determination
Which soil structure is most likely to be found in the B-horizon of a mature soil profile correct
answers blocky
USDA considers this particle to be between 0.002 and 0.05mm correct answers silt
Sound water management would suggest that it is wise to maximize all the following except
_____ correct answers crop residue removal
A loamy sand, sandy loam, loam and silt loam could contain the same percentage of _____ size
particles correct answers clay