daniel carrillo, rita duncan & jorge peña · 2020. 5. 15. · daniel carrillo, rita duncan...
TRANSCRIPT
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Tropical Fruit IPM
Tropical Research and Education Center
Daniel Carrillo, Rita Duncan & Jorge Peña
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Year
Cum
ulat
ive
Det
ectio
ns
GATT: 3rd Round 1986-1994
WTO: Agreement on the Application of Sanitary and Phyto-Sanitary Measures (SPS) 1995
NAFTA: 1992
DR-CAFTA: 2005Arthropods as
significant detections in Florida
wndixon.fdacs.2007
APS, San Diego 2007: Free Trade: Challenges to Plant Health
Pathway analysis
Wayne Dixon FDACS, 2007
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Why pests?
Caterpillars and loopers
MiridsThrips
• Short life cycle • High reproductive rates• Feed on plants• Adapt quickly to changing environments• Acquire pesticide resistance• Many are secondary, few are key pests.
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Key Pests: Vectors of Plant Pathogens
Asian CitrusPsyllid Greening
Ambrosia beetles
Laurel Wilt
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IPM: Integrated Pest management
Combine several complementary pest control methods in a mutually enhancing way to reduce pest populations to less than damaging numbers.
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IPM: key steps1. Know your cropping system - grow healthy crops2. Know your pests and the damage they cause3. Monitor- Scout for pests4. Decision making5. Intervention (control)6. Record keeping
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Tropical Fruit Production:vPerennial: Trees 30 years or more (permanent
habitat): avocado, mango, litchi, longan, etc.vTemporal setting: 2-5 years: passion fruit,
papaya, banana.
IPM Step 1: Know your cropping system
Best way to prevent pest problems: grow healthy crops
Nutrition - water management - resistant cultivars - spacing
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Thrips
Papaya fruit fly
Pitaya
Papaya
Caribbean fruit fly
Guava
IPM Step 2: Know your Pests and the damage they cause
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OFF
PFF
Pitaya
Papaya
Bephratelloides
Annona seed borer
Sapodilla borer Banana Weevil
Mango bud mite Papaya Mealybug
IPM Step 2: Know your Pests
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OFF
Papaya
Leaf-footed bug
Passion fruit
Litchi Scale
Dragon fruitPassion fruit TSHB
Avocado
IPM Step 2: Know your Pests and the damage they cause
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IPM Step 2: Know your Pests and the damage they cause
http://trec.ifas.ufl.edu/tropical-entomology/index.php
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IPM Step 3: Monitor- Scout for pests
• Monitoring is always advised, but, very few times practiced.
• Through monitoring, accurate information is obtained to make management decisions
• AVOID NASTY SURPRISES…NEW PESTS…CROP LOSES…
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IPM Step 3: Monitor- Scout for pests
Magnifying glass lens
10-15 X
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• Sampling mango panicles for thrips
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IPM Step 3: Monitor- TRAPS and lures
Jackson trapMoths & Fruit flies
McPhail trapFruit flies Wood boring insects
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IPM Step 4: Decision making
Economic Threshold: the insect's population level or extent of crop damage at which the value of the crop destroyed exceeds the cost of controlling the pest.
• For key pests (aggressive disease vectors) economic threshold is close to ZERO.
• For some pests relatively low populations can be tolerated, specially if natural enemies are present.
Spider mitesLace bug
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• Cultural • Mechanical and Physical• Biological• Chemical• Regulatory
IPM Step 5: Intervention
(five control tactics)
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Make the crop environment less suitable for insect pests.
IPM Step 5: InterventionCultural Control
• Resistant or tolerant cultivars (GMO papaya, ect.).• Avoid dense plantings, overcrowded overlapping branches.• Weed management (i.e. thrips in carambola & pitaya).• Time of harvest: (green mangos)• Proper irrigation, nutrition, ect.
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Mechanical and Physical Control
• Prevent pest access to the host
fruit bagging Sticky bands
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Mechanical and Physical Control
• If the pests are already present, physically removing them.
Sanitation: Remove infested limbs and fruit.Chipping ambrosia beetle infested wood (avocado).
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Mechanical and Physical ControlTrapping: Fruit fly traps in papaya
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The use of natural enemies—predators, parasitoids & pathogens, —to control pests
IPM Step 5: InterventionBiological Control
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Naturally occurring predators, some commercially available
IPM Step 5: InterventionBiological Control
Amblyseius largoensisRed palm mite, other mites
Stethoconus praefectusAvocado lace bug
Ceraeochrysa claveri soft-bodied insects and mites
Stethorus utilisPapaya mites
Coccinellid beetles soft-bodied insects
lacewingPredacious mirid
Predatory mites
Lady beetle
Podisus maculiventrisPredator of avocado loopers
spined soldier bug
Holt studios
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IPM Step 5: InterventionBiological Control
Parasitoids
An organism (i.e. wasp of fly) that lives in a host organism and ultimately kills the host
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IPM Step 5: InterventionBiological Control
Parasitoids
Diachasmimorpha longicaudata
Caribbean fruit fly
Tamarixia radiata
Asian citrus Psylid
Erythmelus
Egg parasitoids of ALB
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Entomopathogenic: Fungi, bacteria, viruses, nematodes
IPM Step 5: InterventionBiological Control
Beauveria bassianaMetarhizium brunneum
Photo credit: Jim Buckman
Bacillus thuringiensis (leps)
University of California
Granulosis virus (loopers)
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IPM Step 5: InterventionChemical Control
Types insecticides:
• Broad spectrum: kill a wide variety of animals by attacking a system common to all (i.e. nervous system).
• Narrow spectrum: More selective (chitin inhibitors, growth regulators). Less harmful on natural enemies.
• Contact: must “touch” the pest to be deadly.• Systemic: absorbed by plants and translocated to leaves
and twigs to protect them from pests. Less harmful on natural enemies.
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Oriental Fruit Fly
IPM Step 5: InterventionRegulatory
Quarantine pests:
• a pest of potential economic importance and not yet present in an area, or present but not widely distributed and being officially controlled.
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Pest ID, Monitoring, Thresholds
Cul
tura
l
Phys
ical
Bio
logi
cal
Che
mic
al
Reg
ulat
ory
Combination of management tactics
Pest suppression to tolerable levels
IPM
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Thank you!Questions?