Evagio Forte offers new blight fungicide with built in resistance management

Potatoes
1024_x_576_healthy_blight_free_leaves_drive_high_yields_and_clean_tubers.jpg

Syngenta has launched Evagio® Forte a new blight fungicide with built in resistance management for the 2024 season. It integrates the most effective CAA foliar blight active ingredient, mandipropamid, with the added security of amisulbrom in an easy-to-use optimised formulation. 

The integrated Evagio Forte formulation of two powerful actives, from two different fungicide groups, adds a valuable anti-resistance strategy and maintains the overall efficacy of the blight programme, advises Syngenta Technical Manager, Andy Cunningham. 

1024_x_576_andy_richardson_advocates_blight_strategies_to_minimise_resistance_risk.jpg

Andy highlighted registration trials have proven the formulation of Evagio Forte delivered the most effective blight control at reduced active loading of the mandipropamid and amisulbrom combination, compared to the rates recommended for the two individual components. 

“That is important for agronomists looking to minimise overall fungicide active applications in the blight programme, especially when using mixes of solo products to tackle resistance concerns,” Andy advised. 

“Without the evidence of such specific efficacy trials, it is always recommended to use the full rate of any blight fungicide, even when used in mix with another product.” 

1024_x_576_focus_on_a_blight_free_potato_canopy.jpg

Andy advocated the combination of mandipropamid and amisulbrom can be used from first flowering and could prove especially useful from canopy complete through to the end of the season, to keep foliage clean of infection and reduce risk of tuber blight. 

1024_x_576_clean_tubers_from_blight_free_potatoes.jpg

“Evagio Forte is highly active against blight spore germination as a preventative application." 

"Fast uptake into the leaf tissue assures good translaminar movement and local systemic activity that inhibits disease mycelial growth during the application period,” he said. 

Andy recommended using the Syngenta Blightcast forecasts of weather conditions conducive to blight, to help indicate spray timings and intervals between applications. Use in conjunction with knowledge of any local disease incidence that will significantly increase risk of infection.  

Use Syngenta 3D ninety nozzles for all blight application in potatoes

Growers and agronomists can use three Evagio Forte applications in their blight programme at a rate of 0.6 l/ha, subject to FRAC guidelines on the total number of CAA treatments. For optimum resistance management, it should always be alternated with another blight product containing actives from a different fungicide mode of action group.   

Where some EU_43 blight strain isolates in the EU have shown reduced sensitivity to the CAA group of active ingredients, including mandipropamid, there has been no recorded UK incidence. Andy warns that growers and agronomists must remain vigilant. 

“It is crucial to take a precautionary approach, utilising more blight spray mixes and alternating chemistry modes of action, to minimise the risk of any issues developing,” he urged. 

“Evagio Forte provides an important additional option to bolster that approach.” 

Evagio Forte logo