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How can I control pests?Options for controlling high priority pests in carrots February 2016

Horticulture Innovation Australia Ltd (HIA) and the vegetable industry reviewed pesticide requirements in carrots via a Strategic Agrichemical Review Process (SARP) in 2014. This SAR process identified diseases, insect pests and weeds of major concern to the carrot industry. Against these threats, available registered or permitted pesticides, along with non-pesticide solutions, were evaluated for overall suitability in terms of Integrated Pest Management (IPM), resistance, residues, withholding period, efficacy, trade, human safety and environmental issues.

The following tables list the high priority pests, and control methods, impacting carrot production in Australia.

High Priority Diseases

DISEASE TYPE OF CONTROL OPTIONS

Powdery mildew (Erysiphe heraclei)

Currently registered fungicides

• Azoxystrobin + difenoconazole (AMISTAR® TOP) – Group 11+3 – effective

Currently permitted fungicides

• Tebuconazole (various, PER13091, expires Sep 2025) – Group 3 – effective

Non-chemical options • Use IPM strategies

Sclerotinia rot (Sclerotinia sclerotiorum, Sclerotinia minor)

Currently registered fungicides

• None

Currently permitted fungicides

• Azoxystrobin (various, PER14816, expires Jun 2019) – Group 11 – resistance concerns

Non-chemical options • Rotate crops

• Use IPM strategies

High Priority Nematodes

NEMATODE TYPE OF CONTROL OPTIONS

Root-knot nematodes (Meloidogyne spp.)

Currently registered nematicides

• Fenamiphos (NEMACUR®) – Group 1B – under review by APVMA

• 1,3-dichloropropene (various) – pre-plant only

• Metham sodium (METHAM®) – under review by APVMA

Currently permitted nematicides

• None

Non-chemical options • Rotate crops

• For further information refer to http://bit.ly/root-knotnematode

This project has been funded by Horticulture Innovation Australia Limited using the vegetable levy and funds from the Australian Government.

Document ICP1/022/1601

High Priority Insects

INSECT TYPE OF CONTROL OPTIONS

Aphids – carrot aphid (Cavariella aegopodii)

Currently registered insecticides

• Dimethoate (various) – Group 1B – under review by APVMA

• Potassium salts (various) – not used

• Fenamiphos (various) – Group 1B – not used for this pest

• Maldison (various) – Group 1B – effective

• Phorate (various) – Group 1B – only used when multiple pests present and difficult to control

Currently permitted insecticides

• None


Rutherglen bug (Nysius vinitor)




• None

Non-chemical options • Control weeds around crops – this pest feeds on weeds then moves to the crop as weeds die

• Manage the retail/supermarket zero tolerance of live insects

Thrips (Thysanoptera spp.)


• Dimethoate (various) – Group 1B – under review by APVMA

• Potassium salts (various) – not used

• Fenamiphos (various) – Group 1B – not used for this pest


• Phorate (various) – Group 1B – only used when multiple pests present and difficult to control


• None


Options for controlling high priority pests in carrots

Horticulture Innovation Australia Limited (HIA Ltd), Applied Horticultural Research Pty Ltd (AHR), RM Consulting Group (RMCG) and IPM Technologies Pty Ltd make no representations and expressly disclaims all warranties (to the extent permitted by law) about the accuracy, completeness, or currency of information in this fact sheet. Users of this material should take independent action before relying on it’s accuracy in any way.Reliance on any information provided by HIA Ltd, AHR, RMCG or IPM Technologies Pty Ltd is entirely at your own risk. HIA Ltd, AHR, RMCG or IPM Technologies Pty Ltd are not responsible for, and will not be liable for, any loss, damage, claim, expense, cost (including legal costs) or other liability arising in any way (including from HIA Ltd, AHR, RMCG, IPM Technologies Pty Ltd or any other person’s negligence or otherwise) from your use or non-use of information from project VG13078 Extension of Integrated Crop Protection information in this fact sheet, or from reliance on information contained in this material or that HIA Ltd, AHR, RMCG or IPM Technologies Pty Ltd provides to you by any other means.

High Priority Weeds

WEED TYPE OF CONTROL OPTIONS

Resistant ryegrass (Lolium rigidum)

Currently registered herbicides

• Chlorthal dimethyl – Group D

• Fluazifop-P as butyl – Group A

• Glyphosate – Group M

• Linuron – Group C

• Paraquat + diquat – Group L

• Pendimethalin – Group D

• Prometryn – Group C

• Quizalofop-P-ethyl – Group A

• Sethoxydim – Group A

• Trifluralin – Group D

Currently permitted herbicides

• Clethodim (PER13788, expires March 2018) – Group A

• Glyphosate (PER13305, expires June 2015) – Group M

Non-chemical options

• For furhter infomation refer to http://bit.ly/ausvegweeds

IPM Compatibility of PesticidesGrowers using an IPM approach need to consider the IPM compatibility of any pesticide they apply. This means considering not only the efficacy of the product, but also its impact on the key beneficial insects and mites in each specific cropping system. Growers are encouraged to contact an IPM consultant for specific advice about the IPM compatibility of any pesticide listed in this factsheet.

Updates and Further Information• Pesticide registration and permit information changes regularly. To access the most up-to-date

information, check the Australian Pesticides and Veterinary Medicines Authority website at: http://apvma.gov.au, or InfoPest at: http://www.infopest.com.au

• The information provided here is a summary of the SARP conducted for carrots. For information regarding‘gaps’onpestcontroloptionsandtheidentificationofsuitableneworalternativepesticidestoaddress these ‘gaps’ view the full report at: http://bit.ly/SARPS

• For more information on the minor use permit system, contact the Minor Use Coordinator at AUSVEG on 03 9882 0277.

Options for controlling high priority pests in carrots

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