Soil Around the World Answers

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Lower temperatures lead to slower soil formation.

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Why might soils rich in organic matter not be fertile?

Soil fertility comes from a balance of organic matter and other mineral nutrients.

Large amounts of organic material make soil retain too little water.

Soil fertility is a result of the inorganic minerals present.

Soils rich in organic material are always highly fertile.

Utilizing ultisols for agriculture requires _______.

extensive irrigation

fertilizer to balance the high alkalinity of the soil

adding organic matter to supplement the shallow horizons

fertilizer to replace nutrients that leach from the soil

Aridisols are soils characteristically found in _______.

forests

plains

deserts

swamps

What characteristic is shared by both inceptisols and entisols, the soils of flood plains?

They both have well-developed soil horizons and profiles.

Both are young and only beginning to develop horizons and a soil profile.

They are both at the final stage of soil development.

None of the above

There is no direct way to reduce soil compaction caused by agricultural practices.

Which of the following is not a defining characteristic of soil?

mineral composition

humidity

texture

color

How is over-irrigation damaging to soil?

It reduces the amount of organic material in soil.

It results in the accumulation of salt near the soil surface.

It increases the acidity of soil.

It removes water from the water table.

Histosols experience a fast rate of decomposition. Please select the best answer from the choices provided

Where are the effects of soil salinization most likely to be seen?

inland farmland

mountain communities

coastal farmland

coastal cities

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