NovaChem > Industry News > 2023 > Planning effective disease control in wheat

Planning effective disease control in wheat

Published on 23/11/2023

Words: Syngenta

The results from the first two
years of these surveys serve as an early warning to both agronomists and farmers.
These results have shown there
has been a slight but expected loss of sensitivity to all the SDHI’s commonly used in wheat.
It is important to note that, to
date, no loss of field efficacy has been observed with any of the SDHI’s used to control SLB, including Elatus® Plus (MOA Group 7).

The longevity of commonly
used SDHI active ingredients can be prolonged.

However, to do this, some
changes to how fungicides are used on-farm need to be made. Syngenta is fully supporting additional guidelines for the use of SDHI fungicides for the control of SLB (issued by FAR in the Arable Update, Cereals: Issue 217), and also stresses the impotance of:

• Restricting the number of
SDHI's to one or an absolute maximum of two per season (including any seed treatment).

• Always tank mixing with at
least one robust fungicide from a different mode of action group.

• Alternating SDHI active in
gredients both within and between seasons rather than repeat applications of the same active ingredient.

• Using alternative mixing
partners, ensuring they always have efficacy against the pathogen.

Elatus Plus has a long stand
ing, excellent track record for performance against STB as well as glume blotch, leaf rust and stripe rust.

Vigilance in the area of resist
ance management will mean growers will have continued access to the high value that Elatus Plus brings to disease control in the wheat market.

Elatus Plus was launched in 
2017 to NZ wheat growers. It contains a solo SDHI branded Solatenol® and is approved for use in wheat for the control of leaf rust, stripe rust, speckled leaf blotch (Septoria tritici) and glume blotch (Septoria nodorum).

The ‘Plus’ in the name high
lights the need to apply the solo SDHI product ‘Plus’ a DMI mixing partner for resistance management and curative activity.
However, the ‘Plus’ could also
refer to more yield because that’s what growers can expect when they use Elatus Plus in wheat.

Syngenta recommends use of
Amistar® air induction nozzles for applying Elatus Plus, using water rates of 100-150 litres per ha.
The Amistar nozzle is de
signed to counter the forward speed on the sprayer, resulting in improved plant coverage and better penetration into the crop.

This results in more chemical
reaching lower leaves three and four, where Septoria tritici can spread to infect the all-important flag leaf.

Amistar nozzles can be pur
chased from Syngenta resellers but they are also available free to growers who purchase qualifying amounts of Elatus Plus or other Syngenta products.

Elatus Plus comes in 10 litre
containers with a use rate of 0.75 litres per ha.

It is approved for use in wheat
with a withholding period of 42 days for grain, and 28 days for silage.
For more details, including vid
eos, visit

This page is best viewed in an up-to-date web browser with stylesheets (CSS) enabled. While you will be able to view the content of this page in your current browser, you will not be able to get the full visual experience. Please consider upgrading your browser software or enabling style sheets (CSS) if you are able to do so. The latest version of Firefox, Safari, Google Chrome or Internet Explorer will work best if you're after a new browser.