5. Soil Managment

Question 1

What does soil provide

Answer 1

Anchorage, water, oxygen, nutrients

Question 2

Define loam

Answer 2

Equal parts sand silt clay

Question 3

Particle density

Answer 3

Weight of soil without any pore spaces

Question 4

Bulk density

Answer 4

Indication of pore spaces within the soil

Question 5

Porosity %

Answer 5

(1- bulk density/particle density) * 100

Question 6

Permeability

Answer 6

Ease with which water, air, and plant roots move through a soil
How “Loose” a soil is

Question 7

Odds

Answer 7

Naturally occurring clumps of soil

Question 8

Consistency

Answer 8

Soil behavior under pressure

Question 9

Soil tilth

Answer 9

Physical condition of a tilled soil. Decline of soil structure over time

Question 10

Soil horizons

Answer 10

O: organic material at the top
A: top soil
E: highly leached, lighter in color
B: subsoil
C: less effect of soil forming processes
R: bedrock

Question 11

Pedology

Answer 11

Study of soils

Question 12

Pedon

Answer 12

Smallest volume of soil that contains all the horizons for a specific soil

Question 13

Soil fertility

Answer 13

Ability to supply nutrients for plant growth

Question 14

Cation exchange capacity

Answer 14

Chemical

Question 15

Percent base saturation

Answer 15

Two groups of cations

1. Al +3, H+
2. Ca2+, Mg 2+, K+,

Question 16

Root nutrition uptake

Answer 16

Uptake against a solute gradient

Requires NRG & O2

Question 17

Best soil fertility

Answer 17

High clay
High humus
Good structure 
Warm and deep soil
Good drainage 
Fertilization 
Desirable microbes 
Near neutral PH

Question 18

Poor fertility

Answer 18

High sand
Loss of Orgo matter
Compaction
Cold soil
Shallow soil
Dry or wet soil
Excess irrigation
Erosion
Root damaging pests
Oh too acidic of alkaline

Question 19

Managing PH: soil too alkaline (calcarous soil)

Answer 19

Add sulfur

Question 20

Managing PH: soil too acidic (peat soil)

Answer 20

Liming