Powering up winter barley protection at T2

T2 is the key timing for protecting winter barley from ramularia, with the addition of folpet to existing programmes providing a distinct improvement in control.

Including folpet at T2 provides three clear benefits:

• Adds valuable efficacy against ramularia (and rhynchosporium and net blotch)
• Extends green leaf area and duration
• Provides a significant return on investment by enhancing crop yield

Extended green area and better yields

Trials have shown that the inclusion of folpet as a tank mix partner with other chemistries enhances the level of disease protection provided: adding folpet helps to maintain a greener canopy for longer which subsequently enables the crop to deliver an enhanced yield.

Including folpet at T2 improves ramularia protection.

(Source: Prime Crop Research, Norfolk, 2021. Variety: Flagon. T1 at GS32. T2 at GS 41.)

Siltra Xpro is a trade name of Bayer Crop Science UK

Including folpet at T2 maintains green leaf area.

(Source: Prime Crop Research, Norfolk, 2021. Variety: Flagon. T1 at GS32. T2 at GS 41.)

Siltra Xpro is a trade name of Bayer Crop Science UK

Including folpet at T2 delivers a yield benefit.

(Source: Prime Crop Research, Norfolk, 2021. Variety: Flagon. T1 at GS32. T2 at GS 41.)

Siltra Xpro is a trade name of Bayer Crop Science UK

Above and below: Trials have shown that the inclusion of ARIZONA enhances ramularia protection when used in a programme with other fungicides (T1 was Siltra at 0.6L/ha alone in Teagasc trial below)

Flexible options for ramularia protection

Although T2 is the key timing for including folpet in any scenario, the very best levels of disease control are seen when folpet is applied at two spray timings:

Option 1: improved ramularia protection where disease builds early from a wet spring

• T1: include folpet at 1.0-1.5 litres of product per hectare (GS30/31)
• T2: include folpet at 1.0-1.5 litres of product per hectare (GS39/49)

Option 2: improved ramularia protection & flexibility to apply first split with PGR application

• T1.5: include folpet at 1.0-1.5 litres of product per hectare (GS37)
• T2: include folpet at 1.0-1.5 litres of product per hectare (GS39/49)

Option 3: maintain protection where the canopy is extended

• T2: include folpet at 1.0-1.5 litres of product per hectare (GS39/49)
• T3: include folpet at 1.0-1.5 litres of product per hectare (7-10 days after T2, before GS59)

More information

To find out more about how and when to use folpet in spring spray programmes visit our multi-site fungicide information page at ARIZONA Hub.

ARIZONA (500 g/l folpet) is a unique multi-site protectant fungicide providing an anti-resistance strategy for the control of a range of cereal disease. Click here for more information.