Chap 4 Key Terms 2 Flashcards
supply container
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.
corrosive
A substance that damages animals including humans at the point of contact
LD50
Oral or dermal lethal dose of a substance that kills half the test animals within the two week test period
tolerance level
Maximum incompatible plant pressures species density height location or condition allowable before unacceptable consequences develop
cover-type conversion
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.
LiDAR
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
toxicity
Ability of a substance to damage an organ system to disrupt a biochemical process or disturb in enzyme system
cover-type mapping
Technique that uses aerial photographs followed by ground checks to determine the nature of plant communities on a site
mechanical control methods
Vegetation removal using heavy equipment fitted with power sauce or other cutting devices such as saws mounted on booms or suspended from a helicopter
tree growth regulator (TGR)
Chemical that slows terminal growth by reducing cell elongation
cultural control method
Control method that modifies habitat to discourage incompatible vegetation and establish and manage compatible plant community
minimum vegetation clearance distance (MVDR)
Calculated 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
tree risk assessment
A systematic process used to identify analyze in a valuate Tree risk
dose
The quantity of a substance absorbed into the body
mode of action
Botanical.
Biochemical pathways disrupted by herbicides. Common types include ALS or AH. A. S inhibitors, synthetic oxygen’s EPS p inhibitors. Photo system photo system 2 inhibitors, protein inhibitors and oxygen transport inhibitors.