An idealized soil would be expected to contain about _______ organic matter.
Answer: 5%
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Agronomy
- A soil is formed in a temperate region where rains are expected in the summer. There is not enough rainfall to cause extensive leaching and a calcic horizon is found. Such a soil would probably be classified in the _________ moisture region.
- Mollisols most often develop under conditions:
- Consider four soils that are the same age. The deepest soil profile would most likely develop on:
- Which soil color indicates good drainage?
- Till soils are:
- Over a twenty year period, the bulk of the soil lost by water erosion will result from:
- Aquic soils generally have _________________ relative to nearby non-aquic soils.
- Colluvial deposits are:
- Which of the soil forming factors most strongly influence the texture and chemical composition of the soil in Iowa?
- An Ultisol might have which of the following horizon sequences?
- A soil with an A/C profile sequence would be considered a mature soil.
- A fluvent belongs to the order
- Moraines are landscape features of _______________ parent material.
- The color of the A horizon of Mollisols normally is:
- The ______________ horizon is a zone of silicate clay accumulation.
- Alluvium toxicity to plants is most likely to be a problem with:
- The solder soil is found at 8,000 feet in a humid microclimate in the white mountains of Arizona. It is shallow to bedrock and contains an ochre epipedon over a basic argillic horizon.
- Suppose you took a series of random samples across the surface of each of the following sediments. In which one would you likely find one or more samples with a sandy texture?
- Fertile grassland soils in Iowa that are high in nutrients, that have good drainage and a good moisture supply would most likely be (have) ______________ in the B horizon.
- Outwash is often a good:
- As soils mature from fresh parent material all of the following occur except:
- Which of the following orders has moderately good physical properties, has an ochric epipedon that is slightly acidic and leached, is basic in the argillic horizon and responds well to lime, fertilizer and good management?
- Compare a soil in a depression to a well drained soil upslope from the first soil. One would expect the soil in the depression to:
- If the energy level of a transporting agent changes with distance it will stratify:
- A thin, light colored surface horizon with a high base status and good structure is called a(n) ____________________ epipedon.
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