New fungicides delivering multiple benefits - Elders Rural Services

New fungicides delivering multiple benefits

ADAMA Australia recently launched Maxentis® EC and Proviso® fungicides to the local industry for use in canola, wheat, barley and oat crops.

Maxentis is a unique co-formulation of prothioconazole and azoxystrobin, providing improved disease control spectrum, efficacy and resistance management in cereals and canola. It’s also an important rotation option following commonly used in-furrow and seed treatment fungicides.

Research has confirmed it offers better crop safety than existing benchmark fungicides whether applied alone or in tank mixes.

Rapidly absorbed by leaves, Maxentis controls key diseases including:

  • seedling and upper canopy blackleg and sclerotinia in canola
  • rusts, powdery mildew, septoria, yellow leaf spot, scald and ramularia in cereals

It also features Australia’s first registered claim for control of physiological leaf spot (PLS) in barley.

Proviso is a novel prothioconazole fungicide featuring ADAMA’s unique Asorbital™ technology, which enables enhanced uptake and systemic activity for improved efficacy, compatibility and crop safety.

Flexibility in the tank

It can be used in tank mixes with a range of other crop protection and nutrition products, controlling a broader range of diseases in canola and cereals including fusarium head blight in wheat, and to assist disease management.

Proviso can be ideally applied as the first foliar application following the use of Succinate Dehydrogenase Inhibitor (SDHI) or strobilurin-based fungicides on seed or in-furrow.

ADAMA Australia Portfolio Manager – Fungicides, Matt Sherriff, said growers would be aware of crop safety and mixing issues when tank mixing various crop protection and nutrition products.

“Compared with using other fungicides, growers now have more flexibility to go with various tank mixes from an early stage.’’ Matt said.

He said Maxentis was one of the few fungicides registered for use in canola containing azoxystrobin and it could be included with top-up applications of herbicides like atrazine as early as the four to six-leaf crop growth stage, as could Proviso.

Fight resistance to triazoles

Maxentis can be applied through to the flag leaf stage in cereals and is particularly valuable as an alternative mode of action group in cases where SDHI fungicide already has been applied on seed or in-furrow.

Matt said Proviso was a more cost-effective and adaptable fungicide and could be applied with a host of tank mix partners to further enhance its effectiveness.

Where resistance may be developing to any triazoles, he said growers also could have confidence that prothioconazole was the most effective of these fungicides and by using Proviso, they could avoid paying for additional active ingredients that may be less effective.

Effective on canola and cereals

Harry Pickering, Market Development Manager with ADAMA Australia in NSW, said Maxentis was predominantly used to tackle sclerotinia in canola last season, while there were also applications targeting cereal diseases.

“Growers appreciated the flexible use of Maxentis across canola and cereal crops last season and the feedback was very positive,’’ Harry said.

He said the excellent crop safety meant Maxentis was also particularly valuable in early applications for blackleg control, including in tank mixtures. It was ideal in high cereal disease pressure situations, providing broad spectrum disease control.

Harry said Proviso worked especially well ast season where there were net blotch concerns in barley. There were encouraging responses to applications in canola as well.

He said Proviso’s compatibility with a wide range of crop protection and input products made it a flexible tool for use in multiple crops including canola, where there can be high pressure on existing fungicides.

Controlling disease with an early application

In Western Australia, ADAMA Australia Market Development Manager Bevan Addison said there was strong use of Maxentis and Proviso in the state last season. Growers, agronomists and consultants reported good success, including in mixtures with Flexi-N liquid nitrogen fertiliser.

Bevan said the fungicides were predominantly used in canola crops, with Proviso applied earlier and Maxentis used at more traditional application timings.

He said many growers sprayed earlier due to the need to get across paddocks before they became too wet under the conditions.

“It was earlier than they would traditionally spray, but the disease didn’t progress and while various growers still carried out a second fungicide application, many got away with the one spray,’’ Bevan said.

“It showed that going early with a good fungicide is effective, limiting the development of disease later.’


Article written by ADAMA Australia for Seasons magazine.

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