07/10/2024

OF all the insect pests grape growers and advisers have to combat, grapevine scale (Parthenolecanium persicae) and longtailed mealybug, the latter particularly in relation to table grapes, (Pseudococcus longispinus) are some of the most damaging and the size of their populations in recent season has become concerning.

Both species feed directly on the vine sap, excreting a honeydew substrate that supports the growth of sooty mould, which downgrades fruit value.

Grapevine scale and longtailed mealybug feed directly on the vine sap, excreting a honeydew substrate that supports the growth of sooty mould, which downgrades fruit value.

This has put a strong focus on the need for targeted insecticide programs against scale and mealybug, resulting in increasing adoption of Trivor insecticide from ADAMA Australia.

Trivor combines acetamiprid for rapid knockdown and pyriproxyfen’s residual control, two highly effective active ingredients that are becoming recognised as a valuable rotation partner in programs. Importantly, they both reduce the impact on beneficial insects compared to broader spectrum chemistry.

Trivor can be applied up to E-L 25 (80 per cent capfall) growth stage in table grapes, while in wine grapes it can be applied up to E-L 31 (berry pea size) for domestic production and up to the start of flowering (E-L19) for export wine, to coincide with late spring and early summer juvenile crawler emergence.

Increasing populations of grapevine scale and longtailed mealybug in recent seasons are concerning both wine and table grape growers and advisers.

Daniel Polson, ADAMA Australia’s Market Development Manager for Horticulture, said Trivor had positively impacted the wine and table grape sectors by providing a highly effective product specifically developed to target vulnerability in scale and mealybug lifecycles whilst maintaining minimal disturbance to off-target populations.

“It directly addresses two commercial pests in scale and mealybug that, when in high numbers, not only reduce fruit quality, but adversely affect long-term vineyard health through reduced photosynthetic capability and ongoing vascular damage,” Daniel said.

“With its powerful dual formulation including the pyriproxyfen growth regulator, Trivor provides excellent control across all life stages of mealybug populations. It is gathering strong support for its quick-acting control.”

Trivor can be successfully incorporated into integrated pest management programs, and, with close monitoring of target applications, it can be highly effective against scenarios of multiple life-stage infestations. It also has shown good activity on light brown apple moth populations.

For further information on Trivor insecticide, growers and advisers can contact their local ADAMA representative or visit ADAMA.com.

In a special promotion from ADAMA Australia this season, growers can also receive giveaways with their purchases of Trivor between September 15 and December 31, 2024. Purchases of 15 litres of Trivor come with a Camelbak 1L Drink Bottle, while 40L purchases receive a 65L EvaKool Esky*.

The company is running a similar campaign with its popular Plemax^® insecticide used in brassica as well as leafy and fruiting vegetable crops. During the same period, purchases of 4L of Plemax^® earn the Camelbak Drink Bottle, while 10L purchases attract the EvaKool Esky*.

Redeem your gift now and find out more: https://au.campaigns.adama.com/hort-givaway

*Gift to be redeemed. T&C’s apply.

*DISCLAIMER:

The information provided in this article is intended as a guide only. Information contained in this article has been provided by the manufacturer/ You should not rely on the information in this article, and it should not be considered advice. You should seek professional advice regarding relevant factors specific to your situation. This article does not take into account variable conditions that may impact performance. Always read and follow label directions before using any product in this article. To the maximum extent permitted by law, Nutrien Ag Solutions Limited and its related associated entities will not be liable for any loss or damage suffered by any person arising out of any reliance on any information contained in this article.