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49 Cards in this Set

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A pest is:
any bug plant bacteria virus fungus varmit that competes w/ our intrests

one bug might eat aphids w/h is beneficial while another bug eats a plants roots w/h is very bad and makes that bug a PEST
The best way to look at this is to have a strategy(s) to keep a pest pop. at a level thats eco & detrimental are acceptable.

we want to SUPPRESS the pest pop to ...
an acceptable level. And we know that amt of control depends on the level of infestation.
What is ERADICATION?
total elimination of a pest

its rarely advised UNLESS:

the pest damage is $$$ on crops or plantings

or serves as a VECTOR (carrier) of disease.
INTEGRATED PEST MANG. IPM

what is IPM?
the use of all available tactics or strategies to attain a eco acceptible yield or plant quality while causing least disruption to the enviro
we need pest knowledge
life cycles
pest's relations to hosts
why?
to know what times to kill them

there are certain times bugs are vulnerable in their life cycle.
A pest is:
any bug plant bacteria virus fungus varmit that competes w/ our intrests

one bug might eat aphids w/h is beneficial while another bug eats a plants roots w/h is very bad and makes that bug a PEST
The best way to look at this is to have a strategy(s) to keep a pest pop. at a level thats eco & detrimental are acceptable.

we want to SUPPRESS the pest pop to ...
an acceptable level. And we know that amt of control depends on the level of infestation.
What is ERADICATION?
total elimination of a pest

its rarely advised UNLESS:

the pest damage is $$$ on crops or plantings

or serves as a VECTOR (carrier) of disease.
INTEGRATED PEST MANG. IPM

what is IPM?
the use of all available tactics or strategies to attain a eco acceptible yield or plant quality while causing least disruption to the enviro
we need pest knowledge
life cycles
pest's relations to hosts
why?
to know what times to kill them

there are certain times bugs are vulnerable in their life cycle.
what is biological monitoring called
scouting
scouting sampling trapping are ways to measure pest ?
population levels
so monitoring weather temperatures and moisture alerts the pest manager to what
potential severity of pest outbreaks WHICH influences timing of control measures
sanitation can decrease fungi bacteria viral pop which reduces what
need for pesticide treatments
there are parasitic and predacious insects that work to maintain
pest pop at acceptable levels
reducing incestide use protects
good bugs like ladybird beetles and wasps that eat catapillers and aphids
we need to detect a bug problem before it IS a problem

not doing so
increases control costs
sometimes a bug problem is obvious

sometimes you have to look close, find a plant that
does not look right
to uncover a bug problem, get good at detecting a problem we need to
understand normal plant growth

freq monitoring of fields greemhouses ornamental planting turf

an ability to see a problem

know about bugs disease and what are good organisms
most bugs are not a problem OR are actually good bugs. so the rule here is to
truly know what is causing a problem before we start spraying
a species can be a problem in one situation but not in another!

Use the Cooperative Extension office because
they have books and pampletes on pest identification and control options
knowing a pest's life cycle is essential

why
so you can apply a spray at a susceptible life stage

some can be as adults others as babies but spraying at a nonvulnerable stage does little
this really isn't about killing bugs this is about
saving a crop and the crops value

Dealing with plant diseases its more critical to identifing the problem correctly and control it at the optimal time
only try controling a pest when its causing a $$ problem or aesthetic problem. But remember ...
nothing is gained if the cost of controlling a pest is more than the damage it is causing
when determing a pest problem is causing an economic threat consider
pest pop
geo location
plant variety
plant growth stage
cost of control
value of crop
THRESHOLDS

the discussion here is economic injury level

you need to apply control measure b/f reaching what
the ECONOMIC INJURY LEVEL

this is called the ECONOMIC THRESHOLD (theres 2 thresholds)
The idea here is NOT reaching the EIL economic INJURY level. what is the economic injury level?
the EIL is where damage is greater than control costs.

this means your losing money trying to fight the bugs
so that was the EIL

What is EL?
EL is enonomic threshold

this is where have to act to prevent reaching EIL
EL & EIL so what?
the EL or economic threshold is also called the action threshold or treatment threshold.
Is the EL when damage is first seen?
A plant may tolerate a great deal of damage b/f control is needed.

But other plants? maybe show little damage but its there.
this idea of ET been around long time. for major crops and pest systems. what do we need to determine EL and EIL?
lots of information needed to est EL
discussion of pest damage includes enviro conditions but largely what affect pest activity and population levels?
unpredictable variable affect
1) suscetibility of plants
2) pest activity / pop levels
METHODS OF PEST CONTROL

pesticides are usually first choice of bug control b/c
its the cheapest

but this brings in the enviro

human animal enviro health

look for alternatives w/h is the following discussion
RESISTANT VARIETIES

planting resistent variety plants to bugs

whenever possible plant pest resistant plants why?
avoiding a pest infestation is easier to do than fighting a pest infestation.

use of resistant varieties is important in disease mang.
CROP ROTATION

what can crop rotation offer in this discussion of pest control?
crop rotation works in ag as a control method. creates optimal growing conditions for the plant or unfavorable conditions for bugs.
CULTURAL CONTROL METHODS

what are cultural methods to control pests?
cultural control methods:

create optimal growing conditions for the plant or unfavorable conditions for the pest.

tillage
varying planting time
fertilizing
irrigating
pruning
thinning
other methods are more directly related to pest control

what?
planting trap crops! let the bugs eat the trap crop

sanitation practices
removal of plant residuals that harbor disease
EXs of cultural control are:

change watering / vent patterns to prevent moss in greenhouses

water & fertilizer birch trees freq to help w/stand bronze birch borer attack

what else?
plant winter wheat late to avoid Hessian fly

prune veg to let more light into areas infected w/ powdery mildew

remove elm trees infected w/ Dutch elm disease
Mechanical & Physical Control

a form of cultural control

mechanical & Phy control do what?
prevent the spread or reduce size of the pest pop

mechanical traps
barriers
light
sound
heat
cold
electrocution

remember crop production doesn't use these methods BUT can be effective in ornamental landscapes and greenhouses!

EX spuashing an aphid on a rose is mechanical control! Using a water spray to wash bugs off a plant works!
REGULATORY CONTROLS

this is legal controls

how?
restricting human activity

fed state local regulations provide backbone like:
quarantines
inspections
embargoes
compulsory plant / animal destruction
Biological Control

makes the most of the effect NATURAL enemies have on pests.

how?
1,000s of bugs and their disease agents are predators and parasites of ag / ornamental plant pests. So make every effort to not kill these bugs! This means carefull selections of control methods, esp pesticides
By the way, predators (wasps) and parasites have INTENTIONALLY been introduced from outside the US. Like what?
Ladybird beetles
parasitic wasps
ladybird beetles
lacewings
syrphid flies
parasitic wasps
ants control insects in large and small scale ag and urban situations. so what?
use management strategies to enhance the activities of biological control organisms!

Its a long term strategy. requires scientists and biological control programs etc
SANTITATION control

involves what?
cleanup efforts
removing rotten wood etc
eliminate breeding sites
some techniques remove water or food of pests!
EX removing piles of rotten potatoes reduces volunteer plants that are source of blight fungus
some sanitation practices are:
pathogen free seed stock
pathogen free propogation
planting sites
removing infected plants

what is pathogen free seeds?
making clean seed reduces plant disease spread


pathogen free propagation is growing path free vegation in a nursery.

planting sites is where we can control / reduce disease by eliminating other plants ie weeds that are hosts for disease. Wheat stem rust was removed when barberry was eradicated
removing infected plants

disease can be managed by removing infected plants or plant parts b/f disease speads.
what else
burn or remove infected plants or plant parts from a site to rid area of the pest organism
CHEMICAL controls

essential component of pest control program and always will.

great for large or rapidly growing pest pop. what else?
chemical control is usually the most effective economic or only way to control bugs
EVALUATION

see if your strategy is working. if not what?
change strategy. consider costs and long term consquences. ie pesticide resistance / enviro concerns
KEEPING CURRENT

bugs disease mang strategies are always changing.

so what?
keep up stay aware of the potential of chemical resistance, intro of new pests, advancements in mang techniques.