studying soil scientifically Flashcards

1
Q

Manufactured fertilizers vs.

A

organic fertilizers

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2
Q

Do manufactured fertilizers contain carbon?

A

No

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3
Q

There is ___, ___, and ___ in manufactured fertilizers.

A

N, P, K (Nitrogen, Phosphorous, Potassium)

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4
Q

Do organic fertilizers contain carbon?

A

Yes

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5
Q

Organic fertilizers come from..

A

once living or a part of once living

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6
Q

What are some ways scientists describe soil?

A

Texture(loose, friable, firm), Components(sand, silt, clay), color, consistency(grainy, silky, sticky)

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7
Q

Scientists observations are always..

A

complete and accurate, describes with detail

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8
Q

Desert-

A

Western US, dry, sand, no OM, hot, gritty

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9
Q

Forest-

A

East and East central US, Washington Township, dark brown, OM, good for farming, garden, growing grass for lawn

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10
Q

Grassland-

A

West central and parts of East central US, little dry, grass grows, lots of OM, dark black soil

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11
Q

Tropical Grassland-

A

small areas of Western US, reddish color, wet and dry at times, sticky clay, some OM

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12
Q

What does sand, silt, and clay feel like.

A

Sand-gritty Clay-sticky Silt-flour

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13
Q

What happened in the dust bowl?

A

Oklahoma, Kansas, Texas, Nebraska, Drought caused soil to dry and growing non-native plants allowed wind to pick up soil and carry it long distances

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14
Q

Rank particle sizes smallest to largest

A

Clay, Silt, Sand

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15
Q

What is Organic matter and where does it come from?

A

OM is made with carbon, comes from anything that has died or a part of something that was alive

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16
Q

Topsoil-

A

top, most nutrients, most living things

17
Q

Subsoil-

A

below topsoil, lighter, clay, dry, very little lives here

18
Q

Bedrock-

A

bottom, soil develops from here

19
Q

What happens when soil is handled poorly by farmers?

A

Dry out, erosion(wind and water), lose OM

20
Q

Why do plants not grow after they are planted?

A

Very little nutrients, little water or sunlight, plants not made for climate, not enough OM

21
Q

How does someone increase organic matter in soil?

A

Organic fertilizer, natural fertilizer (manure), growing native plants, leaves and other once living