Test 2

Question 1

1-3 days after a saturating rain

Answer 1

Field capacity

Question 2

Accumulation of nutrients in water stimulates the excess production of algae eventually reducing oxygen content of the water and killing fish

Answer 2

Eutrophication

Question 3

Land capability classification

Answer 3

Classification of land according to position in the landscape and uses of that land

Question 4

Allophane clay

Answer 4

A type of clay that results from volcanic ash that is not made from silicon

Question 5

Gravimetric measurement

Answer 5

Direct measurement of the amount of water in a given mass of soil

Question 6

Tensiometer

Answer 6

Measures the tenacity with which water is held in the soil

Question 7

Permanent wilt

Answer 7

Water content of the soil at which plants do not recover

Question 8

Eh

Answer 8

A unit of measurement of the Redox potential

Question 9

Type of clay that is used to bind mycotoxins in feed

Answer 9

Aluminosilicate clay

Question 10

Available water capacity

Answer 10

Field capacity-permanent wilt point =

Question 11

Hygroscopic water is…

Answer 11

Held tightly in small pores

Question 12

Plant available water

Answer 12

Capillary water

Question 13

Gravitational water

Answer 13

Fills large pores when saturated, drains away quickly

Question 14

Nutrient management

Answer 14

Balancing nutrient inputs and outputs on a farm

Question 15

BMP

Answer 15

A classification utilized by landowners in order to help them determine if their land is good for cropping in order to reduce their environmental impact

Question 16

The evapotransoiration from a pine forest was found to be 50cm during a growing season. If the evaporation from the soil surface during this period of time was 5 cm, what is the level of loss from leaf surfaces?

Answer 16

45 cm

Question 17

Plant transpiration efficiency at a given location is markedly influenced by…

Answer 17

Fertilization practices used and the plant species being grown

Question 18

Do rocks store water?

Answer 18

No

Question 19

What is an example of cohesion?

Answer 19

Surface tension

Question 20

The likelihood of polluting groundwater with pesticides and plant nutrients is enhanced by…

Answer 20

The presence of macro pores in the soil

Question 21

A situation that increases evapotranspiration is…

Answer 21

Wind

Question 22

A factor favoring surface runoff is

Answer 22

Steep field slopes

Question 23

More capillary action will occur in a ____ soil

Answer 23

Clay

Question 24

What are the fates of precipitation

Answer 24

Run off, intercepted by plants, infiltrated into soil

Question 25

The number of acres in a section of land

Answer 25

640

Question 26

The strong attraction between soil particles and water particles is known as

Answer 26

Adhesion

Question 27

The attraction of water molecules for each other is known as

Answer 27

Cohesion

Question 28

As soil dries out, plants begin to show the effects of reduced moisture by,...

Answer 28

Wilting

Question 29

Cultivation is initially ....... for soil aeration but in the long run is ........ for soil structure

Answer 29

Good, bad

Question 30

Water is a ______ molecule

Answer 30

Polar

Question 31

A term that describes water entering the soil profile from the surface is

Answer 31

Infiltration

Question 32

Bulk density measurements include the following

Answer 32

Sand, silt, clay, pore space

Question 33

What would be a good use for kaolinite?

Answer 33

Pottery or China/ paper manufacturers

Question 34

What would be a good use for smectite?

Answer 34

Talc

Question 35

What would be a good use for bentonite?

Answer 35

Line a pond bank

Question 36

What would be a good use for vermiculite?

Answer 36

Potting soil

Question 37

What contaminant in manure causes the environmental risk... Blue baby syndrome

Answer 37

Nitrate-N

Question 38

What contaminant in manure causes the environmental risk... Eutrophication

Answer 38

Phosphorous

Question 39

What contaminant in manure causes the environmental risk... Fish kills

Answer 39

Ammonium

Question 40

What contaminant in manure causes the environmental risk... Human health risks

Answer 40

Pathogens

Question 41

What contaminant in manure causes the environmental risk... Reduced oxygen, clogging fish gills

Answer 41

Organic matter

Question 42

Name three soil features that may limit the use of the site for septic tank drainage fields

Answer 42

1. Fragipan 2. Seepage 3. Flooding capacity

Question 43

What are the 3 main components that define a wetland

Answer 43

1. Hydric/anaerobic soil 2. microorganisms tolerant to anaerobic soil 3. Plants and marsh plants tolerant to wetland hydrology

Question 44

Inputs on a farm (3)

Answer 44

Feed, water, fertilizer

Question 45

Exports on a farm (3)

Answer 45

Manure, milk, meat