Weed control

Weeds not only complete with crop plants for water and nutrients, but can also lead to other problems, such as having nuisance value or poisonous berries in the case of Deadly Nightshade. With increasing public awareness and backlash of chemical use in vineyards, and an increasing incidence of weed resistance to some of the most commonly used herbicides it is important that growers have a professional and informed approach to weed control. The best approach to management of weeds is not to rely on chemical control alone, but where chemicals are used to use a rotation of different chemical groups, and incorporate cultural controls such as slashing, or even targeted cultivation or grazing where appropriate.

The guide to Gazania control was the results of trials conducted by Riverland Wine, and offers some guidance on successful measures and some ideas for controlling this problem weed.

Practical

Control of Gazanias in the Riverland
https://www.wineaustralia.com/getmedia/4cf73905-38c6-4809-9057-b9c2690d2cba/201611-Controlling-Gazanias-in-the-Riverland

Controlling Vineyard Weeds (AWRI) factsheet
https://www.awri.com.au/wp-content/uploads/2019/08/s2100.pdf

Gazanias
https://www.wineaustralia.com/growing-making/pest-and-disease-management/gazanias

Overall guide to weed control (U.S.)
http://www.wine-grape-growing.com/wine_grape_growing/vineyard_weed_management/vineyard_weed_management_chemical.htm

Weed Control (web page, U.S.)
https://thegrapevinemagazine.net/2019/11/how-vineyards-should-tackle-the-task-of-dormant-weed-control/

Herbicide resistance
https://www.agric.wa.gov.au/grains-research-development/herbicide-resistance

Technical

Herbicide reduction strategies for wine grape production (Scientific paper)
https://www.wineaustralia.com/getmedia/a7bd4066-4138-4f55-8f8c-0a0468ab97b0/UA-00-1

Herbicides in vineyards and impact on soil biota (web, scientific paper)
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6096560/

Herbicide resistance in vineyards – glyphosate and paraquat resistant ryegrass
https://ahri.uwa.edu.au/double-banger-glyphosate-and-paraquat-resistant-ryegrass/

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