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Integrated Pest Management
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What is IPM?? Recognition that in most cases some pest population level can be tolerated Management vs. Eradication Optimize & diversify pest management Planning ahead to minimize or avoid future pest problems
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Why Use IPM Practices? Concerns about environmental safety
Loss of long-term residual insecticides Awareness of problems associates with overuse of pesticides
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What Does IPM Include?? Cultural practices
Selection of turfgrass and ornamentals Weed & disease management Irrigation Fertilization Thatch management Encourage biological control Use of pesticides when needed
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Implementation Pest Identification Pest Monitoring
Insect Sampling Techniques Record Keeping & Evaluation
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Pest Identification All landscapes are inhabited by a diverse array of organisms insects spiders mites nematodes other small animals
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Insects: Good or Bad?? ~ 100,000 species in the continental U.S.
~ 150 may be pests Many are beneficial Parasites Predators Pollinators All others cause no damage
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What is it??? Landscapers must be able to tell the difference between:
Primary pests Incidental pests Beneficials
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Pest Monitoring Early detection is essential
Frequent, systematic monitoring
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Things to Look For General thinning of grass or plant leaf discoloration Spongy areas in the turfgrass Irregular brown patches Plants that break off at ground level or are missing parts
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Other Things That Mimic Insects
Heat &/or drought stress Nutritional deficiencies Turf and ornamental diseases Soil compaction
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Other Things That Mimic Insects
Chemical burns fuel spills fertilizers herbicides insecticides Scalping Urine Improper Pruning
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Other Things to Look For
Bird and animal feeding activity Skeletonized leaves Fecal pellets (frass) Sawdust-like debris Stem tunneling Silken tubes Webbing
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Sampling Techniques Detergent flush Flotation Soil examination
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Detergent Flush 1-2 fl oz dishwashing detergent/gallon
1 gallon/4 sq ft Sample edge of damaged area Wait 5-10 minutes
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Detergent Flush Results
Insects flushed webworms cutworms armyworms mole crickets billbug adults earthworms
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Flotation Insert metal cylinder into soil
Fill with plain water and keep filled Wait 3-5 minutes for insects to float to top
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Flotation Results Used primarily for sampling chinch bugs
Also for chinch bug natural enemies
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Soil Examination Cut three sides of a 12-inch square Peel back sod
Examine root zone Examine soil under root zone Can use a cup cutter
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Soil Examination Results
White grub eggs White grubs Billbug larvae
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Record Keeping & Evaluation
Provides historical, site specific information Use to predict problems Increase scouting at critical times Record all cultural and pest control treatments Evaluate results
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Mapping Start with a general map of the area Identify problem areas
Self made map Irrigation maps Architectural maps Identify problem areas
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Benefits Accurate record of what you have done
Identify efficacy problems early Cost/benefit assessment Allows you to be proactive
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Pest Management Options
Cultural Methods Biological Control Insecticides
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Cultural Methods Turfgrass and Plant Selection Effective Maintenance
select ones adapted to local conditions Effective Maintenance avoid overly maintained grass and plants use good horticultural practices
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Biological Control Conserve and enhance existing biological controls
Release of beneficial organisms
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Insecticides Benefits Problems rapid corrective action
relatively low cost result in substantial aesthetic or economic benefit Problems pest resistance outbreaks of secondary pests hazard to non-target organisms hazardous residues groundwater contamination
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Insecticides in an IPM Program
Select carefully Time application to most sensitive stage of the pest monitor pests regularly Use treatment thresholds Spot treat problem areas Calibrate application equipment
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Application Techniques
Where does the pest feed and live? Grass blades? Thatch? Soil or root zone?
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Application Techniques Surface Active Insects
Mow and remove clippings Irrigate before application Light irrigation after application if label says so Avoid irrigation for hours for blade-feeders aphids, mites, armyworms
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Application Techniques Thatch Inhabiting Insects
Mow and remove clippings Irrigate before application Irrigation after application with 1/2 inch water
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Application Techniques Soil Inhabiting Insects
Mow and remove clippings Dethatch or aerate if thatch layer is >½ inch thick Irrigate hours before application ½ inch water Irrigation after application with ½ inch water
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Application Methods Sprays Granules Subsurface - liquid - granules
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Tips – Night Feeding Insects
Irrigate during afternoon Apply treatment late in the day avoids IR breakdown ensures freshest material when pests are active
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Water Management Maintain good moisture levels
If dry, water before application Follow label directions in ALL cases
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The Label Is the Law Always read the label before use
Follow label safety rules Use labeled rates Follow label instructions regarding irrigation Triple rinse containers into spray tank Dispose of pesticide containers properly
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Chemical Pest Control
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Pesticides are chemical substances used to kill or control pests.
Because it is virtually impossible to eradicate an entire population of pests, pesticides should be used as a tool to manage pest populations to a tolerable level.
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Pesticides Inorganic pesticides - made from minerals such as copper, boron, lead, sulfur, tin and zinc such as Bordeaux mixture. Synthetic organic pesticides - man-made, contain hydrogen and one or more elements such as chlorine, phosphorous and nitrogen such as Sevin, malathion and diazinon. Microbial pesticides - microscopic organisms such as beneficial nematodes, viruses, bacteria and fungi. Plant-derived organic pesticides - made from plant parts such as neem, rotenone and pyrethrins.
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How Pesticides Work Protectants - applied to plants, animals, structures and products to prevent injury or damage. Contact poisions - kills pests on contact. Stomach poisions - kills when swallowed. Systemics - taken into the sap of plant. Translocated herbicides - kill plants by being absorbed by leaves, stems or roots and moving throughout the plant killing it.
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How Pesticides Work Fumigants - gasses which kill all living organisms when inhaled or absorbed. Selective - will kill only a certain kind of plant or animal. Nonselective - kills many kinds of plants or animals.
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Using Pesticides Preplant - used before the crop is planted.
Preemergence - used before weeds emerge. Postemergence - used after the weed has emerged. Broadcast - uniform application to an entire specified area. Directed - aiming a pesticide at a portion of a plant or a selected plant. Drench - saturating a soil with a pesticide.
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Using Pesticides Foliar - application to the leaves of a plant.
Spot treat - application of a pesticide to a small selection or area of the site.
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Pesticides Formulations
Liquid Formulations Emulsifiable Concentrates (EC or E) - active ingredient is mixed with an oil base and diluted with water. EC need little agitation to remain mixed but can cause plant damage. Aerosols (A) - active ingredient in a solvent or solution and will form fine droplet when sprayed under pressure. Liquid Gases - some fumigants are gasses which become liquid under pressure. Some stored as liquids and turn to gases after applied.
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Pesticides Formulations
Dry Formulations Dusts (D) - ready to use and contain the active ingredient plus a very fine powder to help dispense the chemical. Usually has a low amount of active ingredient. Be careful of drift. Granules (G) - active ingredient is usually 2 to 40%. Safer to use than dusts or sprays and may give a more even pesticide application. Wettable Powders (WP or W) - look like dusts but need to be mixed with water and sprayed. Need good agitation to remain in suspension. Safer for plnats than EC due to low burn potential.
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Pesticides Formulations
Dry Formulations Soluble Powders (SP) - active ingredient mixed with a powder to be mixed with water. Baits (B) - edible or attractive substance mixed with a pesticide. Flowables (F) - combines the qualities of an EC and WP. Requires agitation. Microencapsulated material - pesticide surrounded by a plastic coating slowly dissolving. Weed and Feed - fertilizer mixed with a pesticide.
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Pesticides Toxicity Caution: need one cup or more to cause sickness or death Warning: need one tablespoon or more to cause sickness or death Danger: need one teaspoon or more to cause sickness or death
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The End
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