Fresh Grapes Grapes Pest Management Uncategorized Wine Grapes

Update on Pesticide Re-evaluations for Grape, March 2020

The following is a summary of changes to pesticides for grape based on PMRA re-evaluations.  Product that is still in grower stores can be used until the dates below:

PMRA Decision Last Farm Use

Rovral
June 21, 2021
Ferbam
Dec. 14, 2021
Quintec
June 20, 2021 (corporate decision)
Maestro WDG, Supra Captan WDG
May 11, 2021.  Can be used with current REI’s until this date
Polyram
June 21, 2021

 

Mancozeb Products

PMRA Proposed Decision Last Farm Use

Manzate December 2021

 

The GGO and OFVGA are working with an industry task force, to engage PMRA in further discussion regarding these mancozeb re-evaluation decisions.

Dithane
Ridomil Gold MZ
Penncozeb
Gavel

 

Maestro WDG and Supra Captan WDG are not available for sale in 2020.  Existing supplies can be used until May 10, 2021 using the REI and use patterns on the current label.  Only WSP formulations will be available for sale this growing season.

Crop PMRA Decision for Supra Captan WSP and Maestro WSP
Rate / Max Apps. REI / PHI
Grape 2 kg/ha

Max 3 apps./season (from unlimited apps/season)

2 apps. targeting Phomopsis

1 app. targeting Downy Mildew

Hand harvest, training, thinning & leaf pulling REI: 55 day (from 72 hr.)

General REI: 12 hours

 

Hand Harvest PHI: 55 day (from 7 day)

Machine Harvest PHI: 7 day

The following are new products and label expansions for 2020:

Product
Group
Diseases/Insects
Cevya
3
Powdery mildew
Miravis Prime
7+12
Botrytis (with activity vs powdery mildew)
Stargus
NC
Suppression downy mildew and black rot
Malathion
1
Spotted wing drosophila
SuffOil-X
NC
Mites

 

 

 

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