Download - PEST MANAGEMENT
PEST PEST MANAGEMENTMANAGEMENT
Paul ThompsonPaul Thompson
County Extension AgentCounty Extension Agent
Berkeley & Dorchester CountiesBerkeley & Dorchester Counties
What is a Pest?What is a Pest?
Horn’s definitionHorn’s definition
“ “ an animal or plant whose an animal or plant whose activities interfere with activities interfere with human health, human health, convenience, comfort, or convenience, comfort, or profits”profits”
With this definitionWith this definition
Even Brian
could be considereda pest,
sometimes
Pest ManagementPest Management
Managing pest populationsManaging pest populations
through strategies that take intothrough strategies that take into
account the environmental andaccount the environmental and
economic impacts while loweringeconomic impacts while lowering
the pest population to anthe pest population to an
acceptable level.acceptable level.
Integrated Pest Integrated Pest Management (IPM)Management (IPM)
Monitor pest populations andMonitor pest populations and
employ strategies to maintainemploy strategies to maintain
them below predeterminedthem below predetermined
thresholds. Controls are cultural,thresholds. Controls are cultural,
biological, or chemical and are onbiological, or chemical and are on
a prescription basis.a prescription basis.
MonitoringMonitoring
Regular scouting of crops toRegular scouting of crops to
identify pest problems early.identify pest problems early.
Management strategies can thenManagement strategies can then
be implemented that are basedbe implemented that are based
on the life cycle of the pest andon the life cycle of the pest and
are economically andare economically and
environmentally sound.environmentally sound.
Cultural controlsCultural controls
Managing soil moisture and nutrient Managing soil moisture and nutrient levels for healthy plantslevels for healthy plants
Plant in proper environmentPlant in proper environment Resistant varietiesResistant varieties Increased air movementIncreased air movement SanitationSanitation MulchingMulching
Biological ControlsBiological Controls
PredatorsPredators
Insects or other animalsInsects or other animals ParasitoidsParasitoids
Insects which lay eggs on or Insects which lay eggs on or in hostin host
ParasitesParasites
Fungi, bacteria, nematodesFungi, bacteria, nematodes
Chemical ControlsChemical Controls
Are beneficials presentAre beneficials present Has a population threshold been metHas a population threshold been met Is the pest at a vulnerable stageIs the pest at a vulnerable stage What are environmental risksWhat are environmental risks Will spot sprays solve the problemWill spot sprays solve the problem Weather forecastWeather forecast
Pesticide toxicityPesticide toxicity
Pesticides have an acute toxicityPesticides have an acute toxicity
rating based on laboratory studies onrating based on laboratory studies on
animals, usually rodents. An LDanimals, usually rodents. An LD50 50
rating israting is given expressed in mg/kg ofgiven expressed in mg/kg of
body weight. The lower the LDbody weight. The lower the LD5050, thethe
more toxic the chemical. more toxic the chemical.
Signal WordsSignal Words
Pesticides are classed intoPesticides are classed into
different levels of toxicity baseddifferent levels of toxicity based
on the LDon the LD5050..
Highly toxicHighly toxic DangerDanger
Moderately toxicModerately toxic WarningWarning
Slightly toxicSlightly toxic CautionCaution
DISEASES OF DISEASES OF ORNAMENTALSORNAMENTALS
BSUSCEPTIBLEHOST PLANT
INSECTS OF INSECTS OF ORNAMENTALSORNAMENTALS
adult
pupa
crawler
Further ReferencesFurther References Insects that Feed On Trees & Insects that Feed On Trees &
Shrubs - ISBN # 0-8014-2108-XShrubs - ISBN # 0-8014-2108-X Diseases of Trees & Shrubs - ISBN Diseases of Trees & Shrubs - ISBN
# 0-8014-1517-9# 0-8014-1517-9 The Ortho Problem Solver - ISBN The Ortho Problem Solver - ISBN
# 0-89721-032-8# 0-89721-032-8 Diseases & Pests of Ornamental Diseases & Pests of Ornamental
Plants - ISBN # 0-471-07249-4 Plants - ISBN # 0-471-07249-4