Chap 4 Key Terms 2

Question 1

corrosive

Answer 1

A substance that damages animals (including humans) at the point of contact

Question 2

cover-type conversion

Answer 2

A type of biological control in which a plant community is converted from incompatible to compatible species using selective techniques that provide a competitive advantage to short growing, early successional plants, allowing them to thrive and successfully compete against unwanted tree species for sunlight, essential nutrients and water.

Question 3

cover-type mapping

Answer 3

Technique that uses aerial photographs followed by ground checks to determine the nature of plant communities on a site

Question 4

cultural control method

Answer 4

Control method that modifies habitat to discourage incompatible vegetation and establish and manage compatible plant communities

Question 5

dose

Answer 5

The quantity of a substance absorbed into the body

Question 6

hack and squirt

Answer 6

Method of herbicide treatment involvong herbicide application into cuts in the trunk (also called frill treatment)

Question 7

half-life

Answer 7

Amount of time it takes half of the quantity of a substance to dissipate, indicating urbicide persistence in this text

Question 8

LD50

Answer 8

Oral or dermal lethal dose of a substance that kills half the test animals within the two week test period

Question 9

LiDAR

Answer 9

Acronym for Light Detection And Ranging technology that uses laser pulses to evaluate field conditions and workloads on rights-of-way with results depicted in a computer image

Question 10

mechanical control methods/mechanical pruning

Answer 10

Vegetation removal using heavy equipment fitted with power saws or other cutting devices, such as saws mounted on booms or suspended from a helicopter

Question 11

minimum vegetation clearance distance (MVCD)

Answer 11

Calculated minimum distance between conductors and vegetation to prevent spark-over, for various altitudes and operating voltages, that is used in the design of transmission facilities

Question 12

mode of action

Answer 12

Botanical biochemical pathways disrupted by herbicides; common types include ALS or AHAS inhibitors, synthetic auxins, EPSP inhibitors, photosystem I inhibitors, photosystem II inhibitors, proton inhibitors, and auxin transport inhibitors.

Question 13

non-selective herbicides

Answer 13

Herbicides that affect a broad range of plant species

Question 14

peripheral zone

Answer 14

In vegetation management, the area outside the right-of-way, where tall growing species may be allowed, although they need to be monitored for risk

Question 15

supply container

Answer 15

Container in which custom plans of diluted concentrates, or ready-to-apply herbicides are provided to applicators. Registered herbicide concentrate is typically provided in returnable, reusable supply containers, while registered and ready-to-use products are typically provided in one-way, disposable supply containers.

Question 16

tolerance level

Answer 16

Maximum incompatible plant pressures (species, density, height, location, or condition) allowable before unacceptable consequences develop

Question 17

toxicity

Answer 17

Ability of a substance to damage an organ system, to disrupt a biochemical process, or disturb in enzyme system

Question 18

tree growth regulator (TGR)

Answer 18

Chemical that slows terminal growth by reducing cell elongation

Question 19

tree risk assessment

Answer 19

A systematic process used to identify analyze and evaluate tree risk

Question 20

wire zone

Answer 20

Transmission right-of-way vegetation management philosophy applied through cover-type conversion. The wire zone is the section of a utility transmission right-of-way under the wires and extending out both sides to a specified distance. The border zone is the remainder of the right-of-way, where small trees and tall shrubs (under 25 feet in height at maturity) are established. (see wire-border zone)

Question 21

wire-border zone

Answer 21

Transmission right-of-way vegetation management philosophy applied through cover-type conversion. The wire zone is the section of a utility transmission right-of-way under the wires and extending out both sides to a specified distance. The border zone is the remainder of the right-of-way, where small trees and tall shrubs (under 25 feet in height at maturity) are established. (see wire zone)

Question 22

workload assessment

Answer 22

Survey of the volume of work. Maybe done by comprehensive inventories or sampling