Agrochemical Updates, eBulletin


AWRI Agrochemical Update July 2011

All changes to the ‘Dog Book’ are reflected in the online version. Amendments are highlighted by a red asterix (*). Visit the following link: http://www.awri.com.au/industry_support/viticulture/agrochemicals/agrochemical_booklet/

New active

MANDIPROPAMID

APVMA 63052

Revus has been granted registration by the Australian Pesticides and Veterinary Medicines Authority (APVMA) for control of Downy Mildew in grapevines.

Revus is a Syngenta Crop Protection Pty Ltd product. It contains the active constituent mandipropamid which is a Group 40 fungicide.

Resistance management strategy: DO NOT apply more than 3 sprays of Revus per season. DO NOT apply more than 2 sequential sprays of Revus alone before applying at least the same number of sprays from a different resistance group. DO NOT make Revus alone the last spray of the season.

Restriction on use for export grapes: Use no later than E-L growth stage 26 (cap-fall complete).

Mealybugs

Mealybugs are not normally considered to be a significant pest in wine grapes. Conventional thinking is that numbers will be kept in check by a diverse range of natural enemies unless something (such as the use of a broad spectrum insecticide) disrupts these populations. If mealybugs are infesting wine grapes and causing significant damage, it is worth considering what may have interrupted the natural balance.

The table below provides a guide to all registered chemical options for mealybugs. Check the product label for appropriate use in your vineyard as registrations vary between states and between mealybug species.

It is recommended that you contact your winery or grape purchaser prior to any 1B insecticide application.

More information:

MEALYBUG
Active constituent Activity Group Some registered products Restriction on use for export wine
paraffinic oil n/a Bioclear, Biopest, Trump Spray Oil Dormant spray only.
buprofezin 16 Applaud, Clap, Country Buprofezin 440, Farmalinix Scale and Bug Use no later than 80% capfall.
chlorpyrifos 1B Country Chlorpyrifos 500, David Grays Chlorpyrifos 500
clothianidin 4A Samurai (soil application only)
diazinon 1B Barmac Diazinon, Country Diazinon, David Grays Diazinon 800, Diazol 800.
maldison (malathion) 1B Fyfanon 440 EW, Hy-Mal, Maldison 500
methidathion 1B Supracide 400, Suprathion 400 EC
parathion-methyl 1B Parashoot CS, Penncap-M Use no later than 80% capfall. Do not allow re-entry into treated areas for 5 days.

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