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TYPES OF PESTICIDES. CHAPTER 13 Any chemical used to control a pest Many different kinds. INSECTICIDES. BROAD SPECTRUM NARROW SPECTRUM CONTACT/ SYSTEMIC. CHITIN (primary structural chemical in body wall) SYNTHESIS INHIBITORS- INTERFERE WITH THE DEVELOPMENT AND MOLTING OF IMMATURES
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TYPES OF PESTICIDES • CHAPTER 13 • Any chemical used to control a pest • Many different kinds
BROAD SPECTRUM NARROW SPECTRUM CONTACT/ SYSTEMIC
CHITIN (primary structural chemical in body wall) SYNTHESIS INHIBITORS-INTERFERE WITH THE DEVELOPMENT AND MOLTING OF IMMATURES INSECT GROWTH REGULATORS-MIMIC ACTION OF INSECT’S NATURALLY OCCURRING JUVENILE HORMONE. VERY SAFE BUT SLOW PHEROMONES-NATURALLY PRODUCED CHEMICALS USED BY ANIMALS TO COMMUNICATE TO EACH OTHER
SHORT TERM VS RESIDUAL (how long they last)
FUNGICIDES • Must have contact • Can be systemic
FUNGICIDES 2 approaches: PROTECTANT-before disease ERADICANT-after disease
HERBICIDES-pesticides used to control unwanted plants SELECTIVE VS NONSELECTIVE
HERBICIDE TIMING • CHECK THE LABEL • PREPLANT-before crop • PREEMERGENT -crop or weed • POSTEMERGENT-selective
PLANT GROWTH REGULATORS increases, decreases or changes normal growth or reproduction in a plant HARVEST AIDS desiccants defoliants
REPELLANTS pesticides that make a site or food unattractive to a pest
TYPES OF PESTICIDES insecticides herbicides fungicides nematicides acaricides molluscides
PESTS CHAPTER 12
PEST IS ANYTHING THAT: • injures humans, animals, crops, structures or possessions • competes with humans, domestic animals or crops • spreads disease • insects, plant diseases, weeds, vertebrates
ID YOUR PESTS! • By knowing the lifecycle of the pest, the damage it causes and when the damage occurs, it will help you to: • know the best time to control the pest • use less pesticide, or use other means of control • avoid injury to the host • avoid injury to the target areas
CATEGORIES INSECTSPLANT DISEASES WEEDS VERTEBRATES
Three pairs of jointed legs Three body regions
METAMORPHOSIS the series of changes an insect goes through as it develops from egg to adult no metamorphosis-little change from hatch and adult simple or gradual metamorphosis incomplete metamorphosis complete metamorphosis
3 distinct stages: egg, nymph and adult body matures gradually SIMPLE METAMORPHOSIS
COMPLETE METAMORPHOSIS
PLANT DISEASES FUNGIBACTERIAVIRUS NEMATODES
SYMPTOMS galls leafspots wilts cankers blights death of tissue
WEEDS can cause skin irritation hay fever harbor pests release toxins contaminate product at harvest compete for water, light and nutrients poison cause off flavors in milk and meat hinder fish growth increase road maintenance costs
WEEDS • ANNUALS • summer-sprout in spring • winter-sprout in fall • BIENNIALS • PERENNIALS
WEED IDENTIFICATION arrangement of leaves-alternate, opposite, whorled leaf structure-simple, compound leaf shape-ovate, lanceolate, linear arrangement of flowers-inflorescence, axillary flower parts-petals, sepals
MAJOR CLASSES OF WEEDS • grasses • sedges • broadleaves
IPM CHAPTER 11
IPM the use of several strategies to prevent or minimize the damage an insect, weed or disease causes.
BENEFITS OF IPM • avoids pest resistance to pesticides • minimize the effects on non-target organisms • minimize effects on environment • maintains good public image • saves $$$$
BASIC STEPS OF IPM Preventative measures Monitoring/Scouting Assessment Action
PREVENTATIVE MEASURES • TO PREVENT PEST BUILDUP • good cultural practices • structural modifications • biological control • physical barriers • resistant varieties
PEST ID beneficial? learn lifecycle
MONITERING/ SCOUTING early detection is key!