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Henry Drew

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Avocados Australia

This document summarizes a presentation on integrated pest management in avocados. It discusses monitoring orchards for pests and determining if they are causing problems. If they are problems, the options for control measures are outlined, including doing nothing and relying on natural controls, or using various chemical or biological controls. It emphasizes using a systematic process of monitoring, assessing problems, considering non-chemical options, deciding on and applying measures, and reassessing their effectiveness. The goal is to make informed decisions as part of an ongoing process of intelligent pest management.

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ANZAGC 2009 Integrated Pest Management in Avocados by Dr Henry Drew Growing Greener Growers henry.drew@bigpond.com
Monitoring Re-assessment Knowledge Control measures Decision-making
High intensity orchards can be monitored effectively for pests
What is it? A PEST Is it a problem? Tea red spidermite What can I do about it?
A PEST Red-banded thrips
FRIEND Striped ladybird
FRIEND Cryptolaemus larvae
Mummy!
What is it? TEA RED SPIDERMITE Is it a problem? YES What can I do about it? Do nothing and rely on natural biocontrols or on the weather Spray with hard chemical Spray with soft chemical Introduce a biocontrol agent Accept the expected level of damage
The toxicity of sprays to some beneficials TOXICITY Predatory mites Cryptolaemus Chilocorus Parasitic wasps Lacewings ladybirds ladybirds Carbaryl Low-Medium High High High Medium-High Pyrethroids High High High High High Tebufenozide* Low Low Low Low Low Bt Low Low Low Low Low Chlorpyrifos Medium High High High High Fenthion High High High High High Methidathion High High High High High Methomyl Medium-High High High High High Dimethoate High High High High High Endosulfan Low-Medium Medium Medium Medium-High Medium Petroleum oils Low-Medium Low Low Low-Medium Low Fenbutatin oxide Low Low Low Low Low Propargite Low-Medium Low Low Low Low
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Henry Drew
Henry Drew
Pests are not evenly distributed Look for hotspots
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Henry Drew
A warning
The start of a problem
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Henry Drew
FRIEND Assassin bug nymph
Mummy!
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Henry Drew
Henry Drew
Henry Drew
Spotting bug Deep, variable and initially greasy
Fruit fly Shallow and small
IPM Intelligent Pest Management Its a systematic process. In summary Startsummary in your crop. In looking Thingslooking be what they seem! Start may not Record wait use what you find to help make decisions. Dont and for magic bullets Consider non-chemical alternatives. Dont wait for magic bullet solutions. Assess if your actions work. Its a merry-go-round.

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Henry Drew

  • 1. ANZAGC 2009 Integrated Pest Management in Avocados by Dr Henry Drew Growing Greener Growers henry.drew@bigpond.com
  • 2. Monitoring Re-assessment Knowledge Control measures Decision-making
  • 3. High intensity orchards can be monitored effectively for pests
  • 4. What is it? A PEST Is it a problem? Tea red spidermite What can I do about it?
  • 9. What is it? TEA RED SPIDERMITE Is it a problem? YES What can I do about it? Do nothing and rely on natural biocontrols or on the weather Spray with hard chemical Spray with soft chemical Introduce a biocontrol agent Accept the expected level of damage
  • 10. The toxicity of sprays to some beneficials TOXICITY Predatory mites Cryptolaemus Chilocorus Parasitic wasps Lacewings ladybirds ladybirds Carbaryl Low-Medium High High High Medium-High Pyrethroids High High High High High Tebufenozide* Low Low Low Low Low Bt Low Low Low Low Low Chlorpyrifos Medium High High High High Fenthion High High High High High Methidathion High High High High High Methomyl Medium-High High High High High Dimethoate High High High High High Endosulfan Low-Medium Medium Medium Medium-High Medium Petroleum oils Low-Medium Low Low Low-Medium Low Fenbutatin oxide Low Low Low Low Low Propargite Low-Medium Low Low Low Low
  • 14. Pests are not evenly distributed Look for hotspots
  • 18. The start of a problem
  • 27. Spotting bug Deep, variable and initially greasy
  • 29. IPM Intelligent Pest Management Its a systematic process. In summary Startsummary in your crop. In looking Thingslooking be what they seem! Start may not Record wait use what you find to help make decisions. Dont and for magic bullets Consider non-chemical alternatives. Dont wait for magic bullet solutions. Assess if your actions work. Its a merry-go-round.