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PEST MANAGEMENT. Paul Thompson County Extension Agent Berkeley & Dorchester Counties. What is a Pest?. Horn’s definition. “ an animal or plant whose activities interfere with human health, convenience, comfort, or profits”. Even Brian. sometimes. With this definition. could be
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PEST MANAGEMENT Paul Thompson County Extension Agent Berkeley & Dorchester Counties
Horn’s definition • “ an animal or plant whose activities interfere with human health, convenience, comfort, or profits”
Even Brian sometimes With this definition could be considered a pest,
Pest Management • Managing pest populations • through strategies that take into • account the environmental and • economic impacts while lowering • the pest population to an • acceptable level.
Integrated Pest Management (IPM) • Monitor pest populations and • employ strategies to maintain • them below predetermined • thresholds. Controls are cultural, • biological, or chemical and are on • a prescription basis.
Monitoring • Regular scouting of crops to • identify pest problems early. • Management strategies can then • be implemented that are based • on the life cycle of the pest and • are economically and • environmentally sound.
Cultural controls • Managing soil moisture and nutrient levels for healthy plants • Plant in proper environment • Resistant varieties • Increased air movement • Sanitation • Mulching
Biological Controls • Predators • Insects or other animals • Parasitoids • Insects which lay eggs on or in host • Parasites Fungi, bacteria, nematodes
Chemical Controls • Are beneficials present • Has a population threshold been met • Is the pest at a vulnerable stage • What are environmental risks • Will spot sprays solve the problem • Weather forecast
Pesticide toxicity • Pesticides have an acute toxicity • rating based on laboratory studies on • animals, usually rodents. An LD50 • rating isgiven expressed in mg/kg of • body weight. The lower the LD50, the • more toxic the chemical.
Signal Words • Pesticides are classed into • different levels of toxicity based • on the LD50. • Highly toxic Danger • Moderately toxic Warning • Slightly toxic Caution
SUSCEPTIBLE HOST PLANT B