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Introductions Review of Last Week’s Class Overview of UPRP and Class Surveys (IRB) Environmental and Human Health Impacts of Pesticides What is a Pesticide?

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Presentation on theme: "Introductions Review of Last Week’s Class Overview of UPRP and Class Surveys (IRB) Environmental and Human Health Impacts of Pesticides What is a Pesticide?"— Presentation transcript:

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3 Introductions Review of Last Week’s Class Overview of UPRP and Class Surveys (IRB) Environmental and Human Health Impacts of Pesticides What is a Pesticide? Plan for Next Two Weeks

4 Three classes Class 1: Overview of UPRP. Pesticides defined. Assess your pesticide use in the home, garden and lawn. Class 2: Reading a pesticide label. Proper use, storage and disposal of pesticides. Class 3: Environmental fate of pesticides. Alternatives to pesticides for pest management. Prevention rather than reaction.

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6 Toxicity and Risks of Pesticides Reading a Label Safe Use, Storage and Disposal of Pesticides

7 Toxicity and Risks of Pesticides Reading a Label Safe Use, Storage and Disposal of Pesticides

8 Acute toxicity – damage resulting from a one-time or limited exposure. Chronic toxicity – damage resulting from long-term (repeated) exposure. Cancer Birth Defects Tumor Growth Liver Damage, jaundice, fibrosis, cirrhosis Reduces sperm count, miscarriage Nerve Damage Development of allergies to pesticides or chemicals in pesticide formulations

9 Acute toxicity is usually determined by animal testing in a dose-response study. LOEL = Lowest Observed Effect Level Lowest does with any observable effect. NOEL = No Observed Effect Level Highest dose with no observable effect. Basis for tolerances (residue levels in food or feed crops). LD 50 = “lethal dose fifty” Dose that killed half of the test animals. Basis for Signal Words on pesticide labels. The smaller this number, the more poisonous the pesticide.

10 table salt3750 mg/kg aspirin1750 mg/kg Diazinon1250 mg/kg caffeine200 mg/kg rotenone130 mg/kg nicotine55 mg/kg The smaller this number, the more poisonous the substance.

11 table salt3750 mg/kg = 1.5 to 2 cups aspirin1750 mg/kg = 350 aspirin Diazinon1250 mg/kg caffeine200 mg/kg = 160 cups rotenone130 mg/kg nicotine55 mg/kg = 25-55 cigarettes Symptoms occur at levels far below LD50 values.

12 Caution (Cat. IV) Caution (Cat. III) Warning (Cat. II) Danger Danger – Poison (Cat. I) Oral LD 50 > 5000 mg/kg500-5000 mg/kg 50-500 mg/kg< 50 mg/kg Inhalation LD 50 > 20 mg/l2-20 mg/l0.2-2 mg/l< 0.2 mg/l Dermal LD 50 > 5000 mg/kg2000-5000 mg/kg 200-2000 mg/kg < 200 mg/kg Eye Effects No IrritationReverses in 7 Days More than 7 Days Corrosive Skin Effects Mild IrritationModerate Irritation Severe Irritation Corrosive

13 True False The signal words ‘DANGER’, ‘CAUTION’ and ‘WARNING’ refer to a pesticide’s potential hazards to human health True False The signal words ‘DANGER’, ‘CAUTION’ and ‘WARNING’ refer to a pesticide’s potential hazards to environmental health

14 Skin Breathing through nose or mouth Eyes Swallowing Once a pesticide enters your body, it doesn’t matter how it got there! Symptoms of pesticide poisoning should be removed from the point of contact

15 Mild or early symptoms: Fatigue Headache Dizziness Blurred vision Excessive sweating Excessive salivation Nausea and vomiting Stomach cramps Diarrhea Tingling or numbness Moderate symptoms: Inability to walk Weakness Chest discomfort Muscle twitches Pupil constriction Severe symptoms: Renal Failure Unconsciousness Convulsions Difficulty breathing Death

16 Risk = toxicity * exposure High toxicity * good management = Low risk Low toxicity * poor management = High risk Zero exposure = zero risk

17 Beware of ANY unusual symptoms! Carefully read labels prior to use Know what to expect and how symptoms may be treated Pesticide Emergencies Poison Control Center: 1-800-222-1222 Keep label accessible: EPA registration number 911 Keep label accessible: EPA registration number

18 Toxicity and Risks of Pesticides Reading a Label Safe Use, Storage and Disposal of Pesticides

19 Brand name Product/Trade name Chemical name Ingredient statement Type of formulation Net contents Name and address of manufacturer Registration number Establishment number Precautionary statements Environmental hazards Physical & chemical hazards Signal words and symbols Statement of practical treatment Directions for use Preharvest interval Restricted entry interval Storage & disposal directions Misuse statement The format of pesticide labels is not standard!

20 Never choose or recommend products based on brand or trade names alone. Read the active ingredients on the label. Several names appear on pesticide labels: Brand name (e.g., Sevin TM, Roundup TM ) Common chemical name (e.g., carbaryl) Different manufacturers may market the same active ingredient under different brand names.

21 Put in picture of two different products with same ai And put in pics with same looking product but two different ai’s

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24 Use the pesticide that you brought from home for this activity. If you do not have a pesticide, you can use the Ortho Insect Killer Label. As a class, we will complete the label activity worksheet, as we work through the next set of slides.

25 http://www.epa.gov/opp00001/label/

26 Manufacturer Name Trade or Brand Name

27 Identifies the ‘active ingredient(s)’, which is/are the ingredient(s) that control the pest.

28 Gives the % of other/inert ingredients These ingredients do not control the pest, but serves another purpose. This purpose may be to dissolve the active ingredient(s) or to affect how the product works.

29 Identifies how much pesticide product is in the container.

30 What the product controls Where, when and how to use Booklet or toll free number may be given for consumers use and information

31 One of three danger words: (1)Caution (2)Warning (3)Danger or Danger Poison These words represent the product’s potential hazards to humans. Caution is least hazardous. Danger Poison is the most hazardous.

32 Potential hazards to people and pets Steps you can take to reduce hazards May include information on how to protect children and/or pets

33 If the product is potentially harmful to wildlife, fish, endangered plants or animals, or may adversely impact wetlands and water resources.

34 Notes hazards such as Corrosiveness or flammability

35 How best to store the product What to do with unused product What to do with the empty container

36 What to do if someone swallows, breathes or contacts the product, or gets the product on their skin or in their eyes A ‘Note to Physicians’, which provides Drs. with specific information, may also be included.

37 EPA Registration Number

38 EPA Establishment Number

39 Name, address and sometimes phone number of the manufacturer or distributor.

40 Statement intended to limit a company’s liability, or to act as a disclaimer, or to act as a product warranty.

41 What label violations have you seen, or can you imagine? Think about violations in the home and garden, but also in the workplace.

42 Toxicity and Risks of Pesticides Reading a Label Safe Use, Storage and Disposal of Pesticides

43 **Label will commonly require “long- sleeved shirt and long pants” (not defined as PPE).**

44 Copyright 2006, Oregon State University, all rights reserved.

45 Hose End and Compression Sprayers

46 Hose-end sprayers are proportioners that mix a concentrated pesticide with water and emit a spray of diluted pesticide. Container Lid (Siphon Tube Inside Container)

47 Place anti-siphon device between sprayer and water source to prevent back siphoning of pesticides into your water system. Anti-backflow device

48 Requires extra precautions due to: Breezes Splashing Pesticides in concentrated forms Require regular pumping for effective spray application. Hand-held Compression Sprayer

49 Keep pesticides to a minimum, to reduce storage needs. Follow label instructions.

50 Keep pesticides in original containers! Store in leak-proof containers.

51 Store out of reach of children and pets. Never store near food, feed or medicines. Avoid temperature extremes and moisture.

52 Metro operates two household hazardous waste collection facilities in the Portland area. Facility locations, hours of operation Metro Recycling Information: 503-234-3000. Community collection events in the tri- county-area Call 503-234-3000 for information.

53 We will be discussing environmental fate of pesticides and alternatives to pesticides for pest management.

54 Growing Gardens Metro Regional Government Sustainable Living DHS OSU Extension Metro Master Gardener Program http://flickr.com/photos/judyandpaul/2469337608/ http://www.audubon.org/bird/at_home/images/IPM _ReducePesticides-12.jpg http://www.proudtobecanadian.ca/images/p- r/Pesticide_stockpile_email.jpg

55 http://www.phillipmartin.info/clipart/misc_welcome2.gif http://www.lusd.net/board/agendaClipArt.jpeg http://www.baileypto.org/ http://www.state.me.us/agriculture/bpc/index.html http://school.discoveryeducation.com/clipart/images/digtlc mr.gif http://school.discoveryeducation.com/clipart/images/digtlc mr.gif http://www.epa.gov/opp00001/label/


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