IPMINTEGRATED PEST MANAGEMENT.

AND

RESISTANCE MANAGEMENT

FOR AGRICHEMICALS IN VEGETABLE BRASSICAS.

WHY LOOK AT THESE STRATAGIES.

Utilise naturally occurring predator populations. (IPM)

Utilise naturally occurring diseases of target insects. (IPM)

Increasing trends driven by consumers for pesticide free produce. (IPM)

Manage resistance and maintain the efficacy of existing products. (Resistance management)

THE BENEFITS ARE:

REDUCTION OF Operating costs.

1. Total pesticide applications. 2. Diesel consumption.3. Soil compaction, 4. Labour input.

WHICH LEADS TO

5. Market opportunities.6. Mitigation of environmental

impact. 7. Quality produce.8. INCREASE IN FARM PROFTITABILIY.

INSECTICIDE WINDOWS.RESISTANCE MANAGEMENT STRATEGY

 

Early windowSeptember - end January

Late windowFebruary - August

Bacillus thuringiensis BtK Bta

spinosad (Success Naturalyte) indoxacarb (Steward)

rynaxypyr (Coragen) fipronil (Ascend)

pyrethroids

organophosphates

Pirimicarb (Pirimore) Pymetrozine (Chess)

COMMONLY USED INSECTICIDESINSECTICIDE CHEMICA

L GROUPCONTROLSPECTRUM

MODE OF ACTION(insect)

MODE OF ACTION(plant)

WHP DAYS.(Brassica)

IPM COMPATABLE

DIPEL Bacillus thuringiensis

Lepidoptera Ingestion coverage 0 YES

CORAGEN Rynaxypyr Lepidoptera CONTACTINGESTION

Translaminar 7 YES

STEWARD Oxadiazine Lepidoptera Ingestion Contact

Coverage 7 YES

SUCCESS Spinosad Lepidoptera Ingestion Contact

Coverage 3 YES

CHESS WG Pyridine azomethine

Aphids Ingestion TranslaminarSystemic

7 YES

PIRIMORE Carbamate Aphids SystemicFumigant

Systemic 3 YES

LANNATE Carbamate BS Ingestion Contact

coverage 7 NO

KARATE SP BS ContactIngestion

Coverage 3 NO

DOMINEX SP BS IngestionContact

Non systemic 3 NO

TAMARON OP BS Ingestion Contact

Systemic 7 NO

ASCEND Phenyl pryazole

ThripDBM WBF larva

Ingestion Contact

Coverage 7 NO

ACTION THRESHOLDS

Rely on accurate crop monitoring.

Change with crop development.

Change with the time of seasons.

Timing is critical.

Decision support tools.

BENEFICIAL ORGANISMS.

Insect pathogens. (fungi + Virus) Zoophthora radicans Microsporidea NPV virus

Insect parasitoids. Aphidius wasps

Insect predators. Lacewing Hoverfly Ladybirds

Zoophthora radicans, a fungus that attacks a range of insect species, including DBM (shown here) and Heliothis caterpillars.

Diaeretiella rapae.Parasitic wasp

Lacewing.Micromus tasmaniae

Hover fly Melanostoma fasciatum.

Ladybird Coccinella undecimpunctata.

White butterfly

Diamondback moth.

Green looper

CROP HYGENE.

Clean up paddock surrounds/headlands.

Work trash into the soil.

Monitor weed species as these are often hosts

to insects and diseases of the crop.

Manage crop rotations. e.g. clubroot.

NEW SOFT CHEMISTRY.

There are a number of NEW SOFT products being released having obtaining NZ registration.

CORAGEN has been here since late last year and proved it’s self successful in controlling DBM and WBF in brassicas.

SERENADE (Bacillus subtillus) is successfully being used to help fight bacterial diseases such as Xanthomonas campestris and Psuedomonas syringae, also having label claims abroad for alternaria and downy mildew.

VITAMEX is used as a foliar fertiliser but being Phosphorus acid based is having good effect controlling downy mildew and also bacterial diseases.