Spraying success is all about attention to detail

Wine Australia - 20 Nov 2017

One size doesn’t fit all when it comes to implementing effective vineyard spraying regimes, but Dr Andrew Hewitt is confident there are solutions for all.

Image: Wine Australia

Defining and developing management strategies for sour rot

Megan Hall, Gregory Loeb and Wayne Wilcox - 06 Sep 2017

Cornell University scientists report on research results from the past four years conducted on the specific organisms and conditions needed for sour rot to develop. 

Winegrape Powdery Mildew App goes global

University of Adelaide - 24 Nov 2016

Grape growers and winemakers around the world will be able to easily assess powdery mildew in the field with the help of a mobile application just released globally.

Aster yellows and leafhoppers

by André de Klerk & Roleen Carstens - 18 Aug 2016

Surveys were conducted in vineyards infected with Aster yellows in Vredendal, Waboomsrivier and Robertson to determine which types of leafhoppers occur in the vineyards; which leafhoppers carry the Aster yellows phytoplasma in their digestive tract, making them potential vectors of the disease and whether any of the leafhoppers are definitely a vector of the disease.

 

Image copyright: WineLand Magazine

Japanese beetle - Common pest in US vineyards

Andy Muza, Penn State Extension – Erie County - 11 Jul 2016

The Japanese beetle has been in the United States since 1916 when it was first discovered in New Jersey. Currently, this pest can be commonly found in all states from Maine to Georgia and as far west as Illinois and Tennessee.

ESCA IN SOUTH AFRICAN VINEYARDS

Francois Halleen and Lizel Mostert in WineLand Magazine - 13 Apr 2016

Esca is a fairly unknown grapevine disease in South Africa, although the disease has probably existed locally for decades. This article discusses the causative organisms, the symptoms by which the disease may be recognised and basic control strategies.

Image: WineLand Magazine

Shaking grapevines disrupts pests’ sex lives

By Kai Kupferschmidt in Science - 05 Feb 2016

When it comes to the sex lives of insects, entomologists sure know how to kill the mood. To keep pests from making love—and little bugs—they have developed all sorts of tricks, like spraying plumes of pheromones that lead love-struck males astray. Now, scientists have developed a new way to disrupt mating: shaking the insects’ perches to disrupt the vibrations that would-be partners normally use to find each other.

Image: www.sciencemag.org

Targeting spray application

by Wine Australia - Research and Development - 07 Oct 2015

Comprehensive research looking at how best to use spray systems for pest and disease control in the vineyard is starting to bear fruit. Data from two years of intensive work are now coming in and the University of Queensland research team, led by senior research fellow Dr Andrew Hewitt and senior research scientist Chris O’Donnell, has begun developing best practice models for use in Australian conditions.

New fruit pest?

by Pia Addison, Vaughn Walton and Kate Mitchell in WineLand Magazine - 12 Aug 2015

Spotted wing drosophila (Drosophila suzukii), or SWD, is a vinegar fly originating from Asia, but unlike most vinegar flies, D. suzukii is able to attack fully intact susceptible ripening and ripe fruit. Currently, susceptible fruit include blueberries, caneberries and cherries. In some cases, wine and table grapes may be affected dependent on compromised berries due to cracking, disease and bird damage.

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