School Garden Basics Workshop For Educators - Hawaii
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Transcript of School Garden Basics Workshop For Educators - Hawaii
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School Garden Basics Workshop For EducatorsSchool Garden Basics Workshop For Educators
Insects, Diseases and IPMInsects, Diseases and IPM,,by O’ahu Master Gardeners in cooperation with by O’ahu Master Gardeners in cooperation with KōkuaKōkua Hawai’i FoundationHawai’i Foundation
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Objectives
• Identify types of insects and diseases• Identify types of insects and diseases• Introduce IPM (Integrated Pest Management)• Hands-on search and identification• Provide resources for controlling pest and g p
disease problems
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C t f bCommon types of bugs• Beneficials -good bugs
- Lady Bugs, Lace Wings, Praying Mantis, Spiders• Pests -bad bugs
- Phloem sucking insects (Aphids, Mealy Bug, White Fly and Scale)Pi i (F it Fli )- Piercing (Fruit Flies)
- Chewing insects (Beetles, Grass Hoppers)- AntsAnts- Mites, Corn Borers- Slugs/Snailsg
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Typical Insect Life Cycles
• Complete metamorphosis– Egg>larvae>(pupa)>adult (bug, fly, moth) orgg (p p ) ( g, y, )
• Incomplete metamorphosis– Egg>nymph>adultgg y p
• Most lay plenty eggs• Many pupate in the soil or under debrisMany pupate in the soil or under debris• Control by breaking the cycle
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Types of Pests
• Insects – think 6 legs with head, thorax, abdomen and exoskeleton (ants, ( ,mosquitoes)
• Arachnids – think 8 legs (spider ticksArachnids think 8 legs (spider, ticks, mites)
• Mollusks think slugs and snails• Mollusks – think slugs and snails• Animals – think birds and rodents, dogs and
( d h f ?)cats (and theft?)
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BeneficialsLady Bugs –aka lady Beetles
eat aphid larvae – grow on fennel and dilleat aphid larvae grow on fennel and dill
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Beneficials and AphidsBeneficials and Aphids
• Wasps and aphids youtube -Wasps and aphids youtube -http://www.youtube.com/watch?v=rLtUk-W5GpkW5Gpk
• Lady Bugs and aphids youtube -http://www youtube com/watch?v=zaDTlVhttp://www.youtube.com/watch?v=zaDTlVwKgck&list=LPTyOyMk5PXL4&index=3&feature=plcp&feature=plcp
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Lace WingsLace Wings
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Preying Mantis
• Not common to Hawaii, but a good helper!
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Spiders (are good!)
• Prey on many harmful insects, and usually very plentiful y p
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PestsPestsPhloem Suckers/Piercing
• Aphids, Scale, White Fly, Mealy Bugs, Thrips- Very commonVery common- Easy to detect and control- Carry many viruses and diseases (known asCarry many viruses and diseases (known as
“vectors”)
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Aphids (can fly)Aphids (can fly)
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ScaleScale
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Mealy BugMealy Bug
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Thrips (can fly)
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Whit FlWhite Fly
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Other Common PestsMit B tl Sl L f Mi C• Mites, Beetles, Slugs, Leaf Miners, Corn Borers
Not Significant Pests• Earwigs Ants• Earwigs, Ants
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Spider MitesSpider Mites
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BeetlesBeetles
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Slugs – SnailsSlugs Snails
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Leaf Miner
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Earwig
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Corn BorerCorn Borer
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Dangerous Critters
• Centipedes• ScorpionsScorpions• Fire Ants
B• Bees• Wasps• Stinging Nettle Caterpillar• Rat Lung Disease (slugs/snails)Rat Lung Disease (slugs/snails)
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DiDiseases
• Fungus– Good - yeast, mushrooms, decomposersGood yeast, mushrooms, decomposers– Harmful - powdery mildew, rust, sooty mold
• Viruses• Viruses• Root Rot
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Yeasti l ll d i i h l ifi d lSingle-celled microorganisms that are classified, along
with molds and mushrooms, as members of the kingdom Fungi.
• BreadB i
g
• Beer, wine• Ethanol
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Mushrooms• Can a fungus be delicious?• Can a fungus be delicious?
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DecomposersDecomposers• Fungi are primary decomposers of wood
d l ld ’ i i h hand leaves - we wouldn’t exist without them
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Powdery Mildew (a fungus)Powdery Mildew (a fungus)
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R tRust (a fungus)
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Sooty Mold (a fungus)
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Virus (Latin for poison)
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Banana Bunchy Top Virus
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Other Common Problems• Chlorosis
– Yellowing of some of the leaves– Usually caused by over watering > nutrient deficiencyUsua y caused by ove wate g ut e t de c e cy
• Tip Burn and End Rot– Usually a watering problem –too little or too muchUsually a watering problem too little or too much– Result is calcium deficiency at end of leaf or fruit
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Chl iChlorosis
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Tip Burnp
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Methods of ControlMethods of Control
I d P M (IPM)• Integrated Pest Management (IPM):
“A sustainable approach to managing pests“A sustainable approach to managing peststhat combines biological, cultural, physical,and chemical tools in a way that minimizesand chemical tools in a way that minimizes economic, health, and environmental risks.”(per UH)
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IPM Plan ( UH)IPM Plan (per UH)
• Prepare create the best growing conditions possible
• Identify/Monitor/Analyze....is it a significant problem?• Methods of Control
– Biological– Cultural
M h i l/Ph i l– Mechanical/Physical– Genetic, Regulatory, and Chemical
• Organic or synthetic- USE AS A LAST RESORTg y( If you kill the bad guys, you will also kill the good guys)
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Healthy ConditionsHealthy Conditions
B l i ?• Best cultivars?• Watering techniques?• Good lighting, drainage and air circulation?• Nutrients/chemistry?• Living soil (amended)?• Do a smell and feel test – good earthy scent?• Weeds?
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Identify Monitor AnalyzeIdentify, Monitor, Analyze
• Shake out on paper S i k /• Sticky paper/traps
• Baits (sugar, methyl eugenol, cue lures) • Extrapolate what you find…..is it a significant
problem?
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Biological ControlsBiological Controls(living organisms)
• Beneficials (lady bugs – dill, fennel)( y g , )• Avoidance companions (marigolds, nasturtiums)• Parasitic controls (wasps and certain flies)Parasitic controls (wasps and certain flies) • Insect pathogens (bacteria, fungi, viruses – all can sap
strength and carry diseases)g y )– Have fun with companion planting!
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Companion Planting
• Companion planting (aka interplanting) - using different plant species in close proximity to enhance and support each other. Benefits include:– reduction in the numbers of plant pests
h d h d fl– enhanced growth and flavor – attraction of beneficials
weed suppression– weed suppression
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Companion PlantingCompanion Plantingincludes/involves
• Pest distraction/confusion• Symbiotic nitrogen fixationSymbiotic nitrogen fixation• Biochemical pest suppression
Ph i l i l i i• Physical spatial interactions• Beneficial habitats• Trap cropping
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COMPANION PLANTING GUIDE
VEGETABLES Name Plant with Don't plant with
Beans, Pole (Poamoho) carrots, cucumbers, most herbs and vegetables onions, garlic, gladiolusCabbage (Mustard) aromatic herbs, dill, onion,sage, rosemary, beets tomatoes, pole beansC (N ) l hi i dill
Problems
Bean FlyCabbage Worm/ RustE l /l Bli hCarrots (Nantes) peas, lettuce,chives, onions, rosemary, sage, dill
Corn, Sweet (#9Yellow	Silver) pease, beans, cucumbers, pumpkin, squashCucumber (Lehau) beans, corn, peas, radishes, sunflowers potatoes, aromatic herbsEggplant (Waimanalo Long) beansKale (Dinosaur) aromatic herbs, dill, onion,sage, rosemary, beets tomatoes, pole beansLettuce (Manoa) carrots, radishes (a strong team), strwberries,
Early/late BlightsMosaic VirusPickle WormsMites/Bacterial WiltCabbage WormsSlugs/snails
Lettuce (Bambi) carrots, radishes (a strong team), strwberries, Onions, Green (Koba) beets, strawberries,tomato, lettuce,chamomile, peasPepper (Kaala) tomatoes, petunias, geraniumsPotatoes, Sweet beans, corn, cabbage, horseradish, marigold, cucurbits, sunflower, tomatoRadishes (Cherry Belle) peas, nastrutium, lettuce, cucumberTomato Grape (Komohana) chive, onion, parsley, marigold, nasturtiums, potato, cabbage, fennel
Slugs/snailsThrips/aphidsThrips/Pepper MaggotPotato WeevilNoneFungal disease fruit flyTomato, Grape (Komohana) chive, onion, parsley, marigold, nasturtiums, potato, cabbage, fennel
HERBS Name Plant with Don't plant with
Basil (Sweet) tomatoes to improve flavorDill cabbage carrotsLemon Grass
Fungal disease, fruit fly
Problems
Downy MildewNoneRustLemon Grass
Rosemary csabbage, beans, carrots, sage: deters cabbagge
FRUITS Name Plant with Don't plant with
Avocado (Holiday & Wurtz) Cit i
RustSpittle Bug
Problems
Root & Stem RotCit S b/Bl k FlCitrus, various
NOTE: Many similar sources: Denver Urban Garden's School http://dug.org/storage/school-garden-curriculum/Companion_Planting_Guide.pdf
Citrus Scab/Black Fly
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Companion Planting Notes
• Plant the “3 sisters” – used for centuries –corn, squash and beans, q
• Fennel is not friendly with any plants –plant outside your gardenplant outside your garden
• See chart in handoutsG l “ h l d ” d “ i• Google “school gardens” and “companion planting”
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Cultural Controls (i lti ti )Cultural Controls (i.e. cultivation)
• Sanitation before during and after• Sanitation – before, during, and after • Tilling/plowing/compost/humus • Crop rotation - crop timing - mixed croppingCrop rotation crop timing mixed cropping • Trap cropping – crops planted to attract insects away • Crop protection – wind, scraping, injury, staking, support• Plant spacing • Watering techniques • Weed control • Pruning and good tools (sharp clippers)
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Mechanical/Physical Controls
• Water Spray • Hand Picking/vacuum• Barriers and applications:
- Screens, netting, shade cloth, enclosures, traps- Temperature, water/flooding- Tables, copper tape , pp p
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Genetic Regulatory and ChemicalGenetic, Regulatory and Chemical Controls
• Genetic Controls:Clean fresh certified seed disease and pest resistant– Clean, fresh, certified seed –disease and pest resistant
– Regulatory Controls – respect for restricting plant and pest movements and quarantinesp q
• Chemical Controls – LAST RESORT – Bad Guy/Good Guy– Organic (OMRI certified) – soaps, Neem, oils, sulfur– Synthetic –follow the label – IT’S THE LAW!!!!!!
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IPM Sequence Summary Sequence Summary of IPM Gardening Techniques
Common Problem Areas/Symptoms
1st ‐ Healthy Plant? > then
2nd Biological Controls >then
3rd Cultural Controls > then
4th Mech. Physical > then Last Resorts
watering, nutrients, soil weeds, seeds, light drainage air
beneficials, companions, distractions soil
sanitation, rotation, protection, spacing, weeds pruning
water spray, hand pick, barrierslight, drainage, air
circdistractions, soil, seed
weeds, pruning, mulch, tools
barriers
fruits/veggies/flowers/leaves Organic Sprays
veggies/flowers Sulphur
fruits/veggies/flowers/leavesHand Pick or Iron Phosphate
usually not a problem Ant Bait
fruits/veggies/flowers/leaves Organic Sprays
leaves n/a
/leaves n/a
fruits/veggies/flowers/leaves Dispose plant Dispose plant Dispose plant Dispose plant Dispose plant
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SSummary• Bugs beneficials and pests• Bugs – beneficials and pests• Diseases – good and harmful fungi• IPMIPM• Companion planting• The Bottom Line….
– #1…… healthy plants, good cultivation– #2…… no drugs – kill good bugs with the bad bugs– #3……consider environmental impact
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STEM S tiSTEM Suggestionski h l i l i i ( d )• Tracking the sun to explain seasonal variations (23.5 deg)
• pH derivations and implications• Determining how much and the type of water in soil• Determining how much and the type of water in soil• Determining the spectrum of microbiology in soil…….and
in the gardeng• Pest estimations/evaluations• Growth habitats in/out of sunlight – photosynthesis• Soil color evaluation – what do the colors mean? Textures?• Glass jar test with soil – kids bring soil from home
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Handouts and ReferencesHandouts and References• UH CTAHR free pubs (esp. IP-13 (2003): IPM for home
d b Ri h d Ebigardens by Richard Ebisu• UC Davis IPM• Website www ctahr hawaii edu/uhmg• Website www.ctahr.hawaii.edu/uhmg• IPM matrix handout• STEM and Companion Planting handoutsp g• TIP! : Google a topic and add “ext” or “edu”,
ex: “aphids edu” or “aphids edu Hawaii”
LET’S GO OUT AND FIND SOME!
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pHpH
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pH (the Power of Hydrogen)
- BOTH H+ and OH- ions are ALWAYS PRESENT in any solution. A solution is acidic if the H+ are in excess. A solution is basic, if the OH-
ions are in excess- pH is defined as the negative logarithm of the
hydrogen ion concentration.
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Some pH examples
• Our stomach• The oceanThe ocean• Your car
Ci i f i• Citric fruit• Impacts on the microbial environment• Acid rain
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Stink Bug
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Fruit FliesFruit FliesOriental Melon(fruit) (vegetable)
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Vi ti dVirus continued
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Phytophthora and Fusarium Root Rot( t ld d f )(a water mold and a fungus)
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Spittle BugsSpittle Bugs
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Summary Sequence of IPM Gardening Techniques
Common Problem Areas/Symptoms
1st ‐ Healthy Plant? > then
2nd Biological Controls >then
3rd Cultural Controls > then
4th Mech. Physical > then Last Resorts
watering, nutrients, soil weeds, seeds, light, drainage, air circ
beneficials, companions, distractions, soil, seed
sanitation, rotation, protection, spacing, weeds, pruning, mulch,
water spray, hand pick, barriers
Pests
Insects fruits/veggies/flowers/leaves Organic Sprays
Spider Mites veggies/flowers Sulphur
Slugs/Snails fruits/veggies/flowers/leaves Hand Pick
Ants usually not a problemIron Phosphate ant bait
DiseasesFungus fruits/veggies/flowers/leaves Organic SpraysChlorosis leaves n/a
Tip Burn leaves n/aViruses fruits/veggies/flowers/leaves Dispose plant Dispose plant Dispose plant Dispose plant Dispose plant