2015 Season

Cereals andOilseed Rape

Summary of

FungicideRecommendations

Lay the yield foundationBest performance following a T0 chlorothalonil (Septoria protection) + tebuconazole (early rusteradication) spray.

Winter Wheat

T1Key aim To maintain protection of leaves 3 and 4 from Septoria, rusts, mildew and cover any risk of stembase disease, aiming to keep leaf 2 clean ahead of flag leaf emergence.

Timing GS 31-32, leaf 3 emerged. Target Leaves 3 and 4 + stem base.

What to use and best practice

Proline275 0.55 L/ha plus CTLFor broad spectrum foliar and stem base disease control.

• Covers Septoria, yellow rust, mildew, true eyespot and early season Fusarium inoculum management.

• If yellow rust has escaped the T0 timing and is active in the crop add a strobilurin to0.55 L/ha Proline275 + CTL. Can switch to 1.35 L/ha Firefly155 + CTL for pre-formulated solution.

• Where the T1 is delayed or in very high early Septoria pressure seasons, substitute the CTL with bixafeni.e. use 1.0 L/ha Aviator235

Xpro.

Aviator235Xpro 1.0 L/ha plus CTL

At T1 for broad spectrum foliar disease control and non-disease crop health and yield benefits.

• Use CTL with Aviator235Xpro only in protectant situations following a T0.

• Do not add in CTL where timings are delayed.

• If established rust in the crop, substitute CTL for a rust active strobilurin.

Key aim Protect the flag leaf from Septoria and rusts and maintain green leaf area. Eradicate disease on leaf2 which escaped the T1 timing.

Timing GS 37-39, flag leaf fully emerged. Target Leaves 1 and 2.

What to use and best practice

Aviator235Xpro 1.0 -1.25 L/ha

For broad spectrum foliar disease control and non-disease crop health and yield benefits.

• Unlike other SDHI + azole co-formulations, no need to add CTL for Septoria at T2.

• No need to add rust-active strobilurin for extra knock-down in a well-managed programme, but advisablewith any new SDHI + azole co-formulation if rust has escaped onto the flag leaf by T2, or if sprays aredelayed on rust-prone varieties with active disease in the crop.

• Use 1.25 L/ha Aviator235Xpro if extra eradicant activity required where the T2 unavoidably delayed.

Build the yieldBest performance following a robust, well-timed T1.

Aviator235Xpro and Adexar at T2 in 201412.0

Yie

ldt/

ha

Aviator235Xpro 1.0 L/ha Aviator235Xpro 1.25 L/ha Adexar 1.25 L/ha Adexar 1.5 L/ha

9.5

10.0

10.5

11.0

11.5

9.0

100

90

70

80

60

50

40

30

20

10

0

%S

epto

ria

cont

rol

£34.66* £43.36* £38.63* £46.36*

15 BCS and 5 AICCtrials in 2014. AverageUTD yield = 9.1 (t/ha).Average untreateddisease score acrossL1 + 2 = 29 %.All other treatmentsapplied as oversprays.

*Average treatementcost £/ha based onprices from GfKKynetec Webpricesurvey 2014.

Winter Wheat

T2

Key aim To ensure long-lasting suppression of the whole ear blight complexe.g. Microdochium nivale and all true Fusarium species, as well as sooty moulds. To help extend flag leafdisease protection to harvest (especially in extended growing seasons/regions).

Timing GS 59-65, early to mid anthesis. Target Ear and flag leaf.

What to use and best practice

Proline275 0.55 L/haFor broad spectrum suppression of seed infecting Microdochium nivale and mycotoxin-formingyield robbers Fusarium culmorum and F. graminearum. Will also provide extended Septoria andrust protection.

• Best integrated activity on the full ear blight complex.

• Best mycotoxin suppression.

• Covers sooty moulds.

• Provides extended Septoria and rust protection. As with all T3 fungicides, in difficult late season brownand/or yellow rust epidemics, or where rust has escaped the prior programme, add 60-80 g/ha of rustactive strobilurin or tebuconazole.

Protect the qualityBest performance following a well-timed T2 such as Aviator235

Xpro.

Maximising ear blight control at GS 63-65 using Proline275

12

Yie

ldt/

ha

Proline275 0.55 L/ha Tebuconazole 0.75 L/ha

1

2

3

4

5

6

7

8

9

11

10

0

100

90

70

80

60

50

40

30

20

10

0

%F

usar

ium

cont

rol

Mean of 2 inoculatedtrials (FERA and HarperAdams). AVG untreatedstats; yield 3.3T/ha,TGW 33.1 HLH 59.1,DON 44683, Fusariuminfection 52.3%.T3 application made atGS 63.

Winter Wheat

T3

Key aim To protect leaves from initial infection from air-borne ascospores and subsequent rain splashedconidiospores. Spores landing on leaves can germinate and produce lesions within 14 days in optimumconditions so optimally timed treatment is essential.

What to use and best practice

Proline275 0.46 L/haApply in the late autumn often before symptoms have been seen to ensure the crop is protected fromascospore infection going into the winter. Higher rates up to 0.63 L/ha can be considered in areaswhere disease pressure is higher.

Then monitor crop from early January using lens and bags to incubate leaves to spot infection and beprepared to apply a further minimum of 0.32 L/ha Proline275 as soon as infection is detected.

Light leaf spot control

Key aim To protect petals and stems from infection from ascospores released from apothecia germinatingwithin the crop or in fields nearby.

What to use and best practice

Proline275 0.46 L/haApply at early to mid-flowering. Follow up with 0.32 L/ha three weeks later if flowering continues.

OR

Proline275 0.46 - 0.63 L/haIf using a single spray approach apply at mid-flowering.

A split spray approach has been shown to be the best, especially in high disease pressure situations or whenflowering is prolonged. In a split spray approach the first spray will have the biggest impact on final yields,Proline275 has been shown to perform better at this timing than competitors. Where a single application isused, if flowering is prolonged, the crop will not be fully protected against later infections of Sclerotinia.

Sclerotinia control

Oilseed Rape

Build the yield

Winter Barley

Protect the yield

T1

T2

Key aim The most important and responsive spray timing in winter barley, aiming to protect leaf 3 from allfoliar disease, to eradicate disease on leaf 4 and to ensure effective suppression of stem-base disease tooptimise tiller survival.

Timing GS 29-31. Target Leaves 3 and 4.

What to use and best practice

Fandango 1.0 L/haUse on lower yield potential crops.

OR

SiltraXpro 0.6 L/haUse on higher yield potential crops, or where disease pressure is elevated.

Key aim Foliar disease top-up: net blotch and Rhynchosporium in all areas; brown rust in the south andeast; Rhynchosporium in the north and west in cool wet summers or Ramularia in the north and west isparticularly important if there are periods of leaf wetness in spring and/or if crops are stressed.

Timing GS 39-49. Target Leaves 1 and 2.

What to use and best practice

Fandango 0.75 L/haUse on lower yield potential crops.If Ramularia is the target of the T2 spray then the addition of 500 g/ha CTL to Fandango is advised.

OR

SiltraXpro 0.4 - 0.6 L/haUse on higher disease potential crops or where disease pressure is elevated.If Ramularia is the target of the T2 spray then the addition of 500 g/ha CTL to SiltraXpro is advised. Use thehigher rate of 0.6 L/ha where disease pressure is high or where the period of green canopy is extended(ie. Scotland).

BenefitsProthioconazole can offset the need for a specific mildewicide, infections of mildew can reduce green leafarea. Bixafen in SiltraXpro is at the most effective dose for barley to avoid over-extending crop greening effects.Bixafen and prothioconazole are formulated to work together in SiltraXpro for effective, mutual,Rhynchosporium, net blotch and Ramularia resistance management.

Build the yield

Spring Barley

Protect the yield

T1

T2

Key aim To protect against Rhynchosporium, net blotch, mildew and brown rust this is particularly importantin the east.

Timing GS 25-31. Target Mid to late tillering.

What to use and best practice

Fandango 0.75 L/haUse on lower yield potential crops.

OR

SiltraXpro 0.4 L/haUse on higher yield potential crops where soil moisture is less of a limiting factor or where soils areparticularly fertile.

Key aim The most important timing for economic yield responses in spring barley, especiallyRhynchosporium in the eastern region if the summer has been wet. In the northern and western regions thisis the key time to control Ramularia and Rhynchosporium. The best responses to fungicides are seen at thistiming in spring barley.

Timing GS 39-49. Target Top 3 leaves.

What to use and best practice

Fandango 0.75 L/haUse on lower yield potential crops.If Ramularia is the target of the T2 spray then the addition of 500 g/ha CTL to Fandango is advised.

OR

SiltraXpro 0.4 - 0.6 L/haUse on higher yielding crops.If Ramularia is the target of the T2 spray then the addition of 500 g/ha CTL to SiltraXpro is advised. Use thehigher rate of 0.6 L/ha where disease pressure is high or where the period of green canopy is extended(ie. Scotland).

Proline275 contains prothioconazole. Aviator235Xpro contains

prothioconazole and bixafen, Firefly155 contains prothioconazole andfluoxastrobin, SiltraXpro contains prothioconazole and bixafen,Fandango contains prothioconazole and fluoxastrobin, Folicurcontains tebuconazole. All are registered trademarks of Bayer.

Adexar contains epoxiconazole and fluxapyroxad and is a registeredtrademark of BASF.

Use plant protection products safely. Always read the label andproduct information before use. Pay attention to the risk indicationsand follow the safety precautions on the label.For further product information including warning phrases andsymbols refer to www.bayercropscience.co.uk.

©Bayer CropScience Limited 2015

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Bayer Assist: 0845 6092266 or 01223 226644www.bayercropscience.co.uk