Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Organic Gardening > Quiz 1 > Flashcards

Quiz 1 Flashcards

0
Q

What are the effects of physical properties of soil on plants?

A

Soil temp, water movement, root growth, nutrient availability, texture

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
1
Q

What are the components of living soil?

A

Water, oxygen, minerals, organic matter

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

What is soil texture?

A

Proportion of sand, silt, & clay

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

What is soil structure?

A

Aggregation of particles into secondary clusters

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

What is organic matter?

A

Dead organisms and plant matter

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

What is humus?

A

Dark material in final stages of decomposition

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

What do earthworms do?

A

Mix/aerate soil, decompose, increase nutrients, redistribute nutrients, casts

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

What do Arthropods do?

A

Primary de composers

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

What does bacteria do?

A

Make nutrients available, transform nitrogen

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

What do plants need?

A

17 essential elements

  • 95% carbon hydrogen, & oxygen
  • 5% nutrients (N, P, K, Ca, Mg, S, etc)
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

What does fungi do?

A

Varies from producing antibodies to plant hormones

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

What is mycorrhizae?

A

Live on roots & extend reach if root hairs to increase uptake

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

What are actinomycetes?

A

Thread-like bacteria that produce antibodies

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

What is Protozoa?

A

Free living microorganism in water; predatory

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

What is tilth?

A

Physical condition of the soil as it relates to tillage ease

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

What is aggregation?

A

Individual soil particles oriented & brought together

16
Q

What is dispersion?

A

Individual soil particles free to blow away

17
Q

Aggregation is degraded by what?

A

Bare soil, no organic matter, excessive tillage, ammonia, too much nitrogen or sodium

18
Q

What are the primary factors affecting organic matter?

A

Oxygen, nitrogen, moisture, temperature, and organic materials

19
Q

What is farmers capital?

A

Topsoil

20
Q

What are sustainable soil management practices?

A

Livestock to cycle material & organic matter, cover soil, right amount of nitrogen, no moldboard plowing, acceptable soil fertility range

Organic Gardening (1 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2025 Bold Learning Solutions. Terms and Conditions