AC-Ch. 4 Water Management

Question 1

Severe drying out

Answer 1

Desiccation

Question 2

Method of minimizing evaporation and runoff by applying small amounts of water through small emitters

Answer 2

Drip irrigation

Question 3

Loss of water by evaporation from the soil surface and transpiration by plants

Answer 3

Evapotranspiration

Question 4

Group of plants in a landscape with similar water requirements

Answer 4

Hydrozone

Question 5

Downward entry of water into the soil

Answer 5

Infiltration

Question 6

Entry of fine particles into drainage or aeration systems can lead to system clogging and failure

Answer 6

Infiltration

Question 7

Downward entry of materials from one soil or fill layer to another as when a gravel road surfaces mixes with underlying soil

Answer 7

Infiltration

Question 8

Speed at which water penetrates the soil

Answer 8

Infiltration rate

Question 9

Practice of minimizing irrigation needs through the use of drought tolerant plants and watering only when necessary

Answer 9

Minimum irrigation

Question 10

Movement of water trough the soil

Answer 10

Percolation

Question 11

Speed at which water moves through the soil

Answer 11

Percolation rate

Question 12

Term to describe a compound that is poisonous to plants

Answer 12

Phytotoxic

Question 13

Amount or percentage of salt in the soil

Answer 13

Salinity

Question 14

Instrument used to measure soil moisture

Answer 14

Tensioneter

Question 15

Fully hydrated to a normal state of distension

Answer 15

Turgid

Question 16

Calculation based on precipitation and environmental factors that establishes the minimum irrigation needed to maintain plant health

Answer 16

Water budget

Question 17

Ability of a soil to hold moisture

Answer 17

Water-holding capacity

Question 18

Use of plant materials and practices that minimize landscaping water use. Term for environmentally friendly form of landscaping in dry climates

Answer 18

Xeriscaping

Question 19

Water remaining in the soil after gravitational water has drained and before the permanent wilting point has been reached.

Answer 19

Available water