TruGreen Pesticide Certification 6,3a,3b
Study online at https://quizlet.com/_fzlvdl
1. Abiotic disorder A non-pest plant stress such as improper nutrition, too
much or too little water, winter or frost injury
2. Action threshold The pest density at which action (such as pesticide appli-
cation) is justified to prevent further damage.
3. Adelgid An insect closely related to aphids that feed on conifers.
Their feeding often causes galls to form.
4. Aesthetic injury The point at which damage from a pest becomes notice-
level able enough to negatively affect the visible quality of the
plant. This may vary, based in part on the distance the
plant is located from walkways. (and therefore, on the
likelihood of the damage being observed.
5. Airblast sprayer Pesticide application equipment that uses a stream of air
from a fan to break up and distribute the pesicide onto the
plant that is being treated.
6. Allelopathy/al- When one plant species suppresses the growth of anoth-
lelopathic er. For example, walnut trees produce chemicals that will
not allow plants to grow under their canopies.
7. Annual A plant that completes its life cycle and dies in a single
year or growing season.
8. Bacteria A group of single-celled microorganisms, of which there
are typically 40 million in a gram of soil. A few species are
the causes of diseases such as fire blight and leaf spot in
plants.
9. Bactericide A pesticide used to manage a disease cause by bacteria
10. Balled and A standard method used to wrap a tree or shrub rootball
burlapped with burlap to keep the soil around the roots when digging
the plant from the field to move it for transplanting. Often,
larger trees will have a wire mesh placed around the
burlap to provide more support for transporting. The wire
mesh should be removed prior to planting. The burlap
should (optimally) be removed as much as possible also,
, TruGreen Pesticide Certification 6,3a,3b
Study online at https://quizlet.com/_fzlvdl
as amany types of modern burlap contains synthetic
fibers that will not rot. If the burlap is natural fibers it should
at least be removed from the top one-third of the rootball
to avoid the burlap being exposed to the air and wicking
moisture from the roots. Also called B&B.
11. Basal Drench The mixing of a pesticide in a small volume of water and
applying to a 12-18 inch strip around the base of a tree or
shrub. These compounds are normally systemic and are
absorbed by the roots of the plant.
12. Beauveria A naturally occurring fungus that attacks a number of
bassiana insects and has been formulated as an insecticide.
13. Beneficial Insect Insects that eat or develop inside or on pest insects.
Sometimes just referred to as "beneficials." Beneficial
insects do not damage landscape plants.
14. Biennial A plant with a two-year life cycle.
15. Biochemical pes- A biologically derived chemical such as insect sex
ticide pheromones that are used for pest control. They have the
advantages of being non-toxic and specific for controlling
a particular species of pest.
16. Biocide A substance that kills biological organisms.
17. Biological con- A method of controlling a pest by encouraging and using
trol natural controls such as parasitism, predation, and natu-
rally occuring diseases.
18. Biomagnification A situation in which a predatory organism continues to
absorb pesticde as it eats prey that has been exposed to
nonlethal levels of pesticide; the accumulation of pesticide
in the predator can lead to its death.
19. Biopesticide Pesticides cerived from natural materials such as ani-
mals, plants, bacteria and certain minerals.
20. Broad-spectrum A pesticde that affectsx a wide range of target species.
, TruGreen Pesticide Certification 6,3a,3b
Study online at https://quizlet.com/_fzlvdl
21. Broad-spectrum A fingicide that controls a wide range of fungal organisms.
fungicide
22. Broadcast appli- A pesticide applied to a large area over all of the plants.
cation
23. Budbreak The timme when dormant buds open into leaves or flow-
ers.
24. Bulb An underground plant stem (such as an onion or tulip) that
is surrounded by fleshy leaves that are modified to store
nutrients.
25. Calibration the process of adjusting pesticide application equipment
to apply a specific amount of pesticide at a specific rate
over a specific area.
26. Cambium The layer of the tree immediately below the bark that
contains embryonic tissue. It is the actively growing part
of the tree.
27. Cankers Irregular areas of damaged, diseased or dead tissue on
the trunk and stems of woody plants. These may be
various colorgs and may be moist or dry.
28. Chemosterilants A chemical compound that causes reproductive sterility in
an organism.
29. Chlorosis A condition in which leaves are not producing chlorophyll
and are yellowed, often caused by a nutrient deficiency.
30. Chlorotic When the leaves of a plant exhibit yellowing.
31. Cold temerature The ability of a plant to withstand the extremes of temper-
hardiness ature during the winter for a particular area of the country.
The U.S. Department of Agriculture has developed zone
maps to indicate parts of the country that are subject to
roughly the same extremes of cold temperatures. Plants
are rated as to the hardiness zones in which they are able
to survive.
Study online at https://quizlet.com/_fzlvdl
1. Abiotic disorder A non-pest plant stress such as improper nutrition, too
much or too little water, winter or frost injury
2. Action threshold The pest density at which action (such as pesticide appli-
cation) is justified to prevent further damage.
3. Adelgid An insect closely related to aphids that feed on conifers.
Their feeding often causes galls to form.
4. Aesthetic injury The point at which damage from a pest becomes notice-
level able enough to negatively affect the visible quality of the
plant. This may vary, based in part on the distance the
plant is located from walkways. (and therefore, on the
likelihood of the damage being observed.
5. Airblast sprayer Pesticide application equipment that uses a stream of air
from a fan to break up and distribute the pesicide onto the
plant that is being treated.
6. Allelopathy/al- When one plant species suppresses the growth of anoth-
lelopathic er. For example, walnut trees produce chemicals that will
not allow plants to grow under their canopies.
7. Annual A plant that completes its life cycle and dies in a single
year or growing season.
8. Bacteria A group of single-celled microorganisms, of which there
are typically 40 million in a gram of soil. A few species are
the causes of diseases such as fire blight and leaf spot in
plants.
9. Bactericide A pesticide used to manage a disease cause by bacteria
10. Balled and A standard method used to wrap a tree or shrub rootball
burlapped with burlap to keep the soil around the roots when digging
the plant from the field to move it for transplanting. Often,
larger trees will have a wire mesh placed around the
burlap to provide more support for transporting. The wire
mesh should be removed prior to planting. The burlap
should (optimally) be removed as much as possible also,
, TruGreen Pesticide Certification 6,3a,3b
Study online at https://quizlet.com/_fzlvdl
as amany types of modern burlap contains synthetic
fibers that will not rot. If the burlap is natural fibers it should
at least be removed from the top one-third of the rootball
to avoid the burlap being exposed to the air and wicking
moisture from the roots. Also called B&B.
11. Basal Drench The mixing of a pesticide in a small volume of water and
applying to a 12-18 inch strip around the base of a tree or
shrub. These compounds are normally systemic and are
absorbed by the roots of the plant.
12. Beauveria A naturally occurring fungus that attacks a number of
bassiana insects and has been formulated as an insecticide.
13. Beneficial Insect Insects that eat or develop inside or on pest insects.
Sometimes just referred to as "beneficials." Beneficial
insects do not damage landscape plants.
14. Biennial A plant with a two-year life cycle.
15. Biochemical pes- A biologically derived chemical such as insect sex
ticide pheromones that are used for pest control. They have the
advantages of being non-toxic and specific for controlling
a particular species of pest.
16. Biocide A substance that kills biological organisms.
17. Biological con- A method of controlling a pest by encouraging and using
trol natural controls such as parasitism, predation, and natu-
rally occuring diseases.
18. Biomagnification A situation in which a predatory organism continues to
absorb pesticde as it eats prey that has been exposed to
nonlethal levels of pesticide; the accumulation of pesticide
in the predator can lead to its death.
19. Biopesticide Pesticides cerived from natural materials such as ani-
mals, plants, bacteria and certain minerals.
20. Broad-spectrum A pesticde that affectsx a wide range of target species.
, TruGreen Pesticide Certification 6,3a,3b
Study online at https://quizlet.com/_fzlvdl
21. Broad-spectrum A fingicide that controls a wide range of fungal organisms.
fungicide
22. Broadcast appli- A pesticide applied to a large area over all of the plants.
cation
23. Budbreak The timme when dormant buds open into leaves or flow-
ers.
24. Bulb An underground plant stem (such as an onion or tulip) that
is surrounded by fleshy leaves that are modified to store
nutrients.
25. Calibration the process of adjusting pesticide application equipment
to apply a specific amount of pesticide at a specific rate
over a specific area.
26. Cambium The layer of the tree immediately below the bark that
contains embryonic tissue. It is the actively growing part
of the tree.
27. Cankers Irregular areas of damaged, diseased or dead tissue on
the trunk and stems of woody plants. These may be
various colorgs and may be moist or dry.
28. Chemosterilants A chemical compound that causes reproductive sterility in
an organism.
29. Chlorosis A condition in which leaves are not producing chlorophyll
and are yellowed, often caused by a nutrient deficiency.
30. Chlorotic When the leaves of a plant exhibit yellowing.
31. Cold temerature The ability of a plant to withstand the extremes of temper-
hardiness ature during the winter for a particular area of the country.
The U.S. Department of Agriculture has developed zone
maps to indicate parts of the country that are subject to
roughly the same extremes of cold temperatures. Plants
are rated as to the hardiness zones in which they are able
to survive.
