Winegrowers Supplies  -  Spraying schedule

You need protective sprays against Powdery mildew (Oidium), Downy mildew (Peronospora) and Botrytis cinerea. On pure vinifera varieties it is necessary to spray every 12 days from just after bud burst until 6 weeks before harvest; different chemicals are needed at different times. Look for wettable sulphur (eg. SOLFA), Karamate DF, Teldor, Unikat, Scala etc.

'Low Volume' mist spraying, volumes for 1 hectare (approx 2.5 acres) with 1000 vines/acre,
3.1 miles/hour (5.0 kilometers/hour) at 2240 rpm tractor pto speed.

The following development 'stages' are from Eichorn and Lorenz, dates are approximate for England & Wales:-

Winter dormancy  (stage 01)                     1st December - 31st January

Optional - against Phomopsis: 300 - 400 litres per hectare

#1 Bud-burst  (stage 05-07)                       9th April - 11th May

Very important against Oidium - disease spores are in the vine-bark, also against Phomopsis, Oidium, Roter Brenner
300 - 400 litres per hectare; both sides of vine rows

#2 Two to three leaves  (stage 09)             15th May - 30th May

Against: Peronospora, Oidium, Botrytis, Phomopsis, Roter Brenner
200 - 300 litres per hectare; alternate rows

#3 Inflorescences appear  (stage 12-15)     29th May - 13th June

Against: Peronospora, Oidium, Botrytis; + foliar feed, with some Nitrogen
200 - 300 litres per hectare; alternate rows

#4 Inflorescences extended  (stage 17>)    13th June - 27th June

Against: Peronospora, Oidium, Botrytis; + foliar feed, with Nitrogen
300 - 400 litres per hectare; both sides of vine rows

#5 Pre-flowering (stage 19)                      26th June - 15th July (also top the foliage)

Against: Peronospora, Oidium, Botrytis; + foliar feed, no Nitrogen
330 - 440 litres per hectare; both sides of vine rows

#6 Post-flowering  (stage 25)                    9th July - 2nd August

Against: Peronospora, Oidium, Botrytis
440 - 600 litres per hectare; both sides of vine rows

#7 Berries set  (stage 27)                         21st July - 8th August

Against: Peronospora, Oidium, Botrytis; + foliar feed, low Nitrogen
440 - 700 litres per hectare; both sides of vine rows

#8 Berries swelling  (stage 29)                 9th August - 24th August

Against: Peronospora, Oidium, Botrytis; + foliar feed (low nitrogen)
440 - 700 litres per hectare; both sides of vine rows

#9 Bunches close  (stage 31-33)              9th August – 7th September

Against: Peronospora, Oidium, Botrytis
550 - 800 litres per hectare; both sides of vine rows

Post-harvest spray  (stage 41)               23rd October

Optional – only after bad fungal attack - leaves must be green and functioning.

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