Brainscape's Knowledge GenomeTM

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


See full index

APBI 200 > after Mid 2 > Flashcards

after Mid 2 Flashcards

1
Q

soil fertility

A

study of soils ability to supply nutrients needed for plant growth

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

define essential element

A

deficiency makes it impossible for plant complete life cycel
deficiency specific to element and can be corrected by supply this element
element directly involved in nut of plant (necessary metabolit)

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

essential macros

A

C, H, O, N, P, K, Ca, Mg, S

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

Essential micros

A

Fe, Mn, Cu, Zn, Ni, B, Mo, Cl

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

C, H, O

A

Organics
photosynthesis
lots biomass in C
90-95% dry wieght

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

N, P, K

A

Inorganic
commonly deficient, needed in large quants
fertilizer used for deficiency

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

Ca, Mg, S

A

Ca:cell wall
Mg, S:amino acids
not commonly deficient
moderate amounts needd

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

what micronuts for

A

needed in small quants
from OM cycling
Nitrofixation

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

Beneficial elements

A

required by some plant species and their essentiality to plnt growth not confirmed (enhance or yeild pnt health)
Co, Na, Si

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

nutrient available forms

A

NH4+, No3-, H2PO4-, HPO4(2-), K+, Ca(2+), Mg(2+)

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

limestone

A

K, Mg

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

reserves of N in soil

A

SOM
mineralization
bio N fixation N to NH4+
NH4+ fixation in clay, held in CEC

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

S reserves

A

SOM
Mineraliztion (S2 to SO4)
Sulfide minerals

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

P reserves

A 
H2PO4-,HPO4(2-)
SOM
mineralization to PO4
P minerals
fixation by AL/Fe @ low pH
fixation by Cal @ high pH
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

Ca, K, Mg reserves

A

weathering of minerals
mice
limestone

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

mass flow vs diffusion

A

MF: water flow rate times ion conc in soil solution
accum of ions in rhizo
D: depletion of ions in rhizo
slow

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

largest N pool

A

SOM+ microbial biomass

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

Ammonia volatilization

A

ammonium to ammonia

increase in pH surface

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

whats most limiting usually

A

P

20
Q

Similarities of P cycle to N cycle

A

trans: min and immob

FINISH

21
Q

How is P lost in soil

A

Gets fixed

22
Q

pH range fo rmost P fixation

A

6-7
acidic (Fe/Al)
Neutral (clay)
Basic(Ca)

23
Q

Keys about K cycle

A

No atm form (gas loss)
No bio medeation
from primary minrals
formed by cooling magma

24
Q

Great group

A

based on strength of soil-forming process

25
Q

Subgroups

A

based on kind and arrangement of horizons

26
Q

Families

A

based on PM characteristics

27
Q

Series

A

Based on detailed features of pedon

28
Q

Main loss of Ca and Mg

A

Leaching and harvesting

29
Q

serpintine soils

A

derived on ultramatic and metamorphic rock (rich Fe and Mg, low in Ca)
high in Ni and Cr that are toxic for most plants

30
Q

soil degradation types

A

erosion by water and wind
physical
chemical

31
Q

physical degradation

A

compaction, hardseting, laterization

32
Q

Chemical degradation

A

nutrient depletion, elemental imbalance (acidification, salinization)

33
Q

caused of soil degradation

A

overgrazing (exposure to rain/wind), deforest, mismanagement

34
Q

soil erosion

A

detahechment and transportation of soil particles and/or water

35
Q

overgrazing

A

compaction, reduce OM, remove macro nuts returned through exudes
mix aggregaes, collapse macro pores

36
Q

deforestation

A

tropics: hurt chem cycles

steep slopes

37
Q

mismanagement

A

not crop rotate

tillage, ploughing up slope not across countours

38
Q

accelerated erosion

A

occurs when people disturb soil or vegetation by grazing livestock, cut forestsect.

39
Q

three types of erosion

A

sheet, rill, gully

sheet/rill more

40
Q

traditional soil

A

biotic, air, h20, inorg, org

factors of soil fomr

41
Q

urban soil

A 
p horizon (Ap)
man made
42
Q

Anthro soil

A

natural horizon removed

10>cm

43
Q

Vancouver Technical School Market Garden

A
  1. compaction
  2. bad drainage
  3. anoxic conditions
44
Q

Tillicum Kiwassa Neighbourhood house

A
  1. poor drain @ depth
  2. OM added
  3. buried under gravel field
45
Q

25th Ave and dunbar

A
  1. OM added
  2. modified h2) regime
    3.
46
Q

UBC wesbrook

A
  1. Impervious lyer at surface
  2. limited rooting
  3. low plant h20 storage
47
Q

vantage collage

A
  1. limited gas exchange
  2. limited h20 move
  3. surface compacted layer

APBI 200 (3 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions