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.
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.