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History and Philosophy of Biological control and IPM
part of Module 1: Intro to Ecology
83
Agriculture
Undergraduate 4
01/12/2017

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Term
what is a pest?
Definition
-Very anthropocentric concept
-Organism that affects our health, food, fiber or quality of life
-May only be a certain stage
Term
how many living things are pests?
Definition
the vast majority are not
Term
pest management prior to the 1900's
Definition
Tolerance, cultural practices (hand picking, burning, etc.), limited biological control
Term
how pest management changed in the early 1900's
Definition
the introduction of inorganic insecticides (e.g., lead arsenate, sulfurs)
Term
how pest management changed between the 1940's and 1960's
Definition
Emergence of synthetic organic insecticides (e.g., cyclodienes, DDT, organophosphates) to the point where other methods were almost excluded
Term
the effect of the pesticides that became popular and when their effects became apparent
Definition
-Environmental disruptions and damaging biomagnification related to insecticide use
-serious negative effects on wildlife
-pest resistance appears
-Secondary pests

1950s and 1960s
Term
some examples of how resistance to pesticides developed in response to pesticides
Definition
-1914: San Jose scale resistant to lime sulfur
-1946: House fly in Sweden resistant to DDT.
-1997: >500 arthropods resistant to 1 or more insecticide class (35% are flies).
Term
the effect of resistance to pesticides
Definition
-rendered various pesticides useless in some cropping systems
-put pressure on industry and growers to develop novel pest management tools
Term
the initial focus of IPM when it was first enumerated in 1959
Definition
-plant resistance
-biological control
-pesticides
-use of thresholds
Term
this tool was developed to determine when pesticide treatments were necessary
Definition
thresholds
Term
in 1961, the term "pest management" was coined for this reason
Definition
to shift thinking from control to management within thresholds
Term
when IPM was officially recognized and by whom
Definition
1972 my the Nixon administration
Term
some management methods that can be used in IPM
Definition
-Pesticides
-Biological Control
-Pheromones
-Genetic Manipulation
-Plant Resistance
-Cultural Practices
Term
the foundation elements of IPM
Definition
-“Natural Mortality” in Agroecosystem
-Economic Thresholds
-Sampling
Term
the IPM management methods that are chiefly specific to arthropods
Definition
-pheremones
-genetic control
Term
the foundation of IPM is made up of...
Definition
sampling procedures, or being aware of what pests are present, in what number, and then having economic thresholds to relate the pest presence to potential economic losses, and develop a management plan
Term
How we sample is affected by...
Definition
the biology of the pest and the type of damage it causes.
Term
some types of sampling in IPM
Definition
-Absolute Estimates
-Relative Estimates
-Population Indices
Term
Absolute Estimates
Definition
Number per unit area
Term
Relative Estimates
Definition
Number captured in traps or observed per unit time
Term
Population Indices
Definition
Evaluation of pest-induced injury
Term
some types of pests
Definition
-Regular
-Key/severe
-Sporadic/Occasional
-Minor
-Direct
-Indirect
Term
why the type of pest is important
Definition
because it helps in developing sampling approaches
Term
Regular pest
Definition
Present consistently
Term
Key/severe pest
Definition
Consistent, significant damage
Term
minor pests
Definition
Relatively common, limited damage
Term
direct pest
Definition
Attacks economic portion of crop (e.g., fruit)
Term
indirect pest
Definition
Attacks non-economic portion of crop (e.g., leaves of many crops)
Term
some ways to sample using direct counts
Definition
Visual, suction, sweep, shake
Term
some ways to sample using trap capture
Definition
Pheromone, bait, visual, suction, emergence
Term
some ways to sample using population indicies
Definition
Visual inspection
Term
Economic threshold (ET)
Definition
point at which action should be taken to prevent economic loss
Term
Economic injury level (EIL)
Definition
point at which economic injury begins
Term
once the economic threshold (ET) is exceeded,...
Definition
the benefits of action outweigh the costs
Term
once the economic injury level (EIL) is exceeded,...
Definition
the costs of action and losses will outweigh the benefits of acting
Term
what IPM seeks to do
Definition
integrate and optimize multiple tactics into an effective strategy that achieves economic, environmental, and social goals
Term
some details about pesticides
Definition
-Materials designed to kill pests
-Most are regulated by EPA
-Efficacy and environmental risks vary among and within classes
-Generally used in response to pests, but some are prophylactic
Term
some pesticides that aren't regulated by the EPA
Definition
-oils
-soaps
-diatomaceous earth
Term
how pesticides are grouped
Definition
Pesticides are grouped into classes, based on chemical structure and/or general modes of action or target sites
Term
how most pesticides are used
Definition
therapeutically, in response to pest infestations
Term
prophylactic
Definition
used before pests arrive, such as flea treatments
Term
some details about pheremones in IPM
Definition
-Exclusive to Arthropods
-Used to attract pests and monitor their activity in the landscape
-Usually used to monitor rather than make decisions, but some thresholds are based on trap results
Term
Pheromones
Definition
chemicals produced by organisms to communicate with other members of the same species
Term
The two types of pheremones most often used in IPM
Definition
-sex pheromones
-aggregation pheromones
Term
how traps can be helpful in IPM
Definition
by providing insights into the population trends of the pests
Term
genetic manipulation in IPM
Definition
utilizes genetic methods to suppress pest populations, typically rendering pests sterile through mating with irradiated mates released into the environment at high numbers
Term
when genetic manipulation is used in IPM
Definition
in special cases, typically with pests that are spread over restricted areas, with limited immigration and emigration
Term
when genetic manipulation works best in IPM
Definition
works best for pests that only mate once
Term
plant resistance in IPM
Definition
Use of heritable physical or chemical properties of the crop to discourage pest colonization, growth, and/or survival relative to a related, more susceptible crop germplasm
Term
some details about using plant resistance in IPM
Definition
-Extremely important and typically economical
-Prophylactic management
-Developed using conventional or molecular methods
Term
why plant resistance is economical
Definition
it reduces labor and material costs associated with pest management of the target pest
Term
disadvantages of plant resistance in IPM
Definition
must be planned in advance of the crop going out into the environment
Term
cultural practices in IPM
Definition
-Modifications of the cropping system or practices that discourage pest colonization or build up
-Examples are planting date, sanitation, reduced tillage, and use of cover crops
Term
how reduced tillage can be helpful in IPM
Definition
it minimizes soil erosion, but also has a strong tendency to reduce pressure from insect pests
Term
how cover crops and border planting can be beneficial in IPM
Definition
Cover crops and border plantings can help encourage beneficial insect populations to build up
Term
what this Biological Control class will focus on
Definition
the importance of natural mortality in pest management, as well as the active use of biological control agents as components of IPM strategies
Term
the IPM interactions that will be discussed in this class
Definition
the interactions of biological control with pesticides, plant resistance, and cultural practices
Term
Economic threshold (ET)
Definition
point at which action should be taken to prevent economic loss
Term
Economic injury level (EIL)
Definition
point at which economic injury begins
Term
once the economic threshold (ET) is exceeded,...
Definition
the benefits of action outweigh the costs
Term
once the economic injury level (EIL) is exceeded,...
Definition
the costs of action and losses will outweigh the benefits of acting
Term
what IPM seeks to do
Definition
integrate and optimize multiple tactics into an effective strategy that achieves economic, environmental, and social goals
Term
some details about pesticides
Definition
-Materials designed to kill pests
-Most are regulated by EPA
-Efficacy and environmental risks vary among and within classes
-Generally used in response to pests, but some are prophylactic
Term
some pesticides that aren't regulated by the EPA
Definition
-oils
-soaps
-diatomaceous earth
Term
how pesticides are grouped
Definition
Pesticides are grouped into classes, based on chemical structure and/or general modes of action or target sites
Term
how most pesticides are used
Definition
therapeutically, in response to pest infestations
Term
prophylactic
Definition
used before pests arrive, such as flea treatments
Term
some details about pheremones in IPM
Definition
-Exclusive to Arthropods
-Used to attract pests and monitor their activity in the landscape
-Usually used to monitor rather than make decisions, but some thresholds are based on trap results
Term
Pheromones
Definition
chemicals produced by organisms to communicate with other members of the same species
Term
The two types of pheremones most often used in IPM
Definition
-sex pheromones
-aggregation pheromones
Term
how traps can be helpful in IPM
Definition
by providing insights into the population trends of the pests
Term
genetic manipulation in IPM
Definition
utilizes genetic methods to suppress pest populations, typically rendering pests sterile through mating with irradiated mates released into the environment at high numbers
Term
when genetic manipulation is used in IPM
Definition
in special cases, typically with pests that are spread over restricted areas, with limited immigration and emigration
Term
when genetic manipulation works best in IPM
Definition
works best for pests that only mate once
Term
plant resistance in IPM
Definition
Use of heritable physical or chemical properties of the crop to discourage pest colonization, growth, and/or survival relative to a related, more susceptible crop germplasm
Term
some details about using plant resistance in IPM
Definition
-Extremely important and typically economical
-Prophylactic management
-Developed using conventional or molecular methods
Term
why plant resistance is economical
Definition
it reduces labor and material costs associated with pest management of the target pest
Term
disadvantages of plant resistance in IPM
Definition
must be planned in advance of the crop going out into the environment
Term
cultural practices in IPM
Definition
-Modifications of the cropping system or practices that discourage pest colonization or build up
-Examples are planting date, sanitation, reduced tillage, and use of cover crops
Term
how reduced tillage can be helpful in IPM
Definition
it minimizes soil erosion, but also has a strong tendency to reduce pressure from insect pests
Term
how cover crops and border planting can be beneficial in IPM
Definition
Cover crops and border plantings can help encourage beneficial insect populations to build up
Term
what this Biological Control class will focus on
Definition
the importance of natural mortality in pest management, as well as the active use of biological control agents as components of IPM strategies
Term
the IPM interactions that will be discussed in this class
Definition
the interactions of biological control with pesticides, plant resistance, and cultural practices
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