Agrochemical Updates, eBulletin


Agrochemical update June 2013

The AWRI publication Agrochemicals registered for use in Australian viticulture 2013/2014 is now available.

Major changes in the 2013/2014 Dog Book are:

New restrictions on use

BOSCALID

The boscalid (Filan) restriction on use for export grapes has changed. Testing undertaken over the previous season was unable to identify a withholding period that would meet the MRL requirements of some export markets.

Restriction on use for export grapes: Not recommended for use on grapes destined for export wines. Consult your winery/grape purchaser prior to the application of any boscalid spray.

Active constituents and targets

AMETOCTRADIN + DIMETHOMORPH

APVMA 63651
Zampro has been granted registration by the Australian Pesticides and Veterinary Medicines Authority (APVMA) for control of downy mildew in grapevines.
Zampro is a BASF product. It is a co-formulation containing ametoctradin and dimethomorph which are Group 45 and Group 40 fungicides respectively. ZAMPRO should be used solely as a protectant fungicide.
Restriction on use for export grapes: Use no later than 80% capfall.
Resistance management strategy: Apply a maximum of two consecutive sprays before changing to an alternative mode of action for at least one application. Do not apply more than four sprays per season.

CYFLUFENAMID

APVMA 66970
Flute 50 EW has been granted registration by the Australian Pesticides and Veterinary Medicines Authority (APVMA) for control of powdery mildew in grapevines.
Flute 50 EW is an AgNova Technologies Pty Ltd product. It contains the active constituent cyflufenamid which is a Group U6 fungicide. This is in the phenyl-acetamide chemical family and has an unknown mode of action.
Restriction on use for export grapes: Use no later than E-L 31, berries pea size (7 mm diameter).
Resistance management strategy: CropLife Australia has not released a resistance management strategy for this group but the label recommends no more than two applications per season.

PROQUINAZID

APVMA 64165
Talendo has been granted registration by the APVMA for control of powdery mildew in grapevines.
Talendo is a DuPont Australia Ltd product. It contains the active constituent proquinazid which is a Group 13 fungicide that should be used as a protectant treatment only.
Restriction on use for export grapes: Use no later than 30 days before harvest.
Resistance management strategy: DO NOT apply more than two consecutive sprays of a Group 13 fungicide. DO NOT apply more than three Group 13 sprays per season.

TEBUCONAZOLE and AZOXYSTROBIN

APVMA 66541
Custodia has been granted registration by the APVMA for control of powdery mildew in grapevines.
Custodia is a Farmoz Pty Ltd product. It contains the active constituents tebuconazole and azoxystrobin. It should be used as a protectant treatment only.
Restriction on use for export grapes: Use no later than 80% capfall.
Resistance management strategy: DO NOT apply more than two consecutive sprays of Custodia. DO NOT apply more than two sprays of Custodia per season. DO NOT use Custodia curatively.

HYDROGEN PEROXIDE AND PEROXYACETIC ACID

APVMA 66320
Peratec Plus has been granted registration by the APVMA for suppression of botrytis bunch rot, downy mildew and powdery mildew in grapevines.
Peratec Plus is a Jaegar Australia product.
Restriction on use for export grapes: Use no later than 7 days before harvest.

TWO SPOTTED MITE

Control options for two spotted mite have been included in the ‘Recommendations’ section.

petroleum oil na Stifle Dormant spray only.
sulfur, present as polysulfide M2 Lime Sulphur Apply as near as possible to budburst
sulfur, present as elemental or crystalline sulfur M2 Barmac Wettable Sulphur, Brysulf 800 WG, Chemtura Sulphur WG, Cosamil, Cosavet WG, David Grays Sulphur Spray, GranuSulf 800 WG, InnoSulph 800 WG, Kendon Sulphur, Kumulus DF, Microsul WG Elite, Microthiol Disperss, Notion, Rutec Sulfur, Stollers Flowable Sulphur, Sulfostar DF, Sulfur 800 WG, Sulgran WG, Thiovit Jet, Titan Sulphur 800 WG, Top Wettable Sulphur, Uni-Shield Use no later than 30 days before harvest.
etoxazole 10B ParaMite Use no later than 21 days before harvest.

AMITROLE + GLYPHOSATE-IPA + AMMONIUM THIOCYANATE

APVMA 55765
All references to the herbicide Illico have been removed as the product is no longer being marketed.

It is advised that growers consult their winery and/or grape purchaser prior to the application of any Illico spray.

CLOTHIANIDIN

APVMA 60687
Neonicotinoid insecticides are under review by the APVMA. Pending the outcome of this review, Samurai has been removed from the ‘Recommendations’ section of the Dog Book. Samurai is registered for control of long tailed mealybug in grapes.

It is advised that growers consult their winery and/or grape purchaser prior to the application of any Samurai spray.

DIMETHOATE

All references to insecticides containing dimethoate have been removed as no products are currently registered for grapes. APVMA permits may allow the use of dimethoate products in grapes/vineyards in some situations.

It is advised that growers consult their winery and/or grape purchaser prior to the application of any dimethoate spray.

DIURON

All references to herbicides containing diuron have been removed as no products are currently registered for grapes. APVMA permits may allow the use of diuron products in grapes/vineyards in some situations.

It is advised that growers consult their winery and/or grape purchaser prior to the application of any diuron spray.

FENTHION

All references to insecticides containing fenthion have been removed as no products are currently registered for grapes. APVMA permits may allow the use of fenthion products in grapes/vineyards in some situations.

It is advised that growers consult their winery and/or grape purchaser prior to the application of any fenthion spray.

GLYPHOSATE-TRIMESIUM

All references to herbicides containing glyphosate trimesium have been removed as no products are currently registered for grapes.

It is advised that growers consult their winery and/or grape purchaser prior to the application of any glyphosate-trimesium spray.

PARATHION-METHYL

All references to insecticides containing parathion-methyl have been removed as no products are currently registered for grapes.

SPINOSAD

APVMA 56881
APVMA 59303
Entrust Naturalyte and Success 2 Naturalyte have been removed as they are no longer registered. Growers can use existing stock of Entrust Naturalyte and Success 2 Naturalyte until 4 November 2013 and 23 November 2013 respectively against grapevine moth and light brown apple moth. The recommendation for export wine is ‘Use no later than E-L 31, berries pea-size (7 mm diameter).

Resistance management strategy

The CropLife Australia powdery mildew resistance management strategy for Group 11 fungicides now comprises the following points:

  • Apply Group 11 and other systemic fungicides preventatively.
  • DO NOT apply more than two sprays per season of Group 11 fungicides.
  • Where Group 11 products have been routinely used for many seasons, field research indicates there is an increased risk of powdery mildew resistance to Group 11 fungicides occurring. To ensure continued protection against powdery mildew in these circumstances, either abstain from using Group 11s or mix Group 11 fungicides with a registered rate of a compound from an alternative chemical group for the control of powdery mildew in grapes.
  • Alternatively, if applied alone, Group 11 fungicides should be used in strict alternation with fungicides from an alternative chemical group for the control of powdery mildew.

This information is provided to inform the Australian grape and wine sector of agrochemical information, and should not be interpreted as an endorsement.