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Fungicides Containing propiconazole registered for use on saskatoon berries.



Switch 62.5 WG Fungicide

Saskatoon berries Suppression of Entomosporium leaf spot (Entomosporium mespilii) 775 to 975 The first application should be made during early bloom. A second application may be made 7 to 10 day later. A third application can be made if conditions remain favourable for disease development. Use higher rate and shorter application interval under conditions that promote rapid disease development or if there is a history of high disease pressure in the field. Apply in sufficient water to ensure thorough coverage (187-935 L/ha). Do not enter or allow worker entry into treated Saskatoon berry fields for hand-harvesting, pruning or thinning during the restricted entry interval (REI) of 10 days. For all other activities, do not enter or allow worker entry into treated areas within 12 hours after application. Do not apply within 1 day of harvest. Do not make more than 3 applications per year.

Nova Fungicide – powdery mildew

Saskatoon Berry Disease Rate of Nova (g/ha) Use Recommendations POWDERY MILDEW 11.3 g product per100L water Apply at flowering, small green berries, and at green berry stage; spray until dripping. RESTRICTIONS Do not apply more than 340 g/ha. Use a maximum of 3 applications per year with a minimum of 14 days between applications. Do not apply Nova Fungicide within 14 days of harvest.

Funginex DC fungicide

SASKATOON BERRIES: For the control of Saskatoon-juniper rust ( Gymnosporangium spp.) and Entomosporium leaf and berry spo t, apply 3 L/ha in a water volume (e.g., 1000 L) sufficient to ensure thorough wetting - to t he point where the solu tion drips from the plants. Actual orchard area covered will vary, depending on size of bushes and density of planting. Do not apply by air.

PYRIOFENONE 300SC Fungicide

Saskatoon Berries -Powdery mildew (Erysiphe necator) 0.3 to 0.366 (90 to 110 g a.i./ha) Application Instructions: For powdery mildew control, begin fungicide applications preventatively and continue as needed as per instructions below. Use the low rate and long interval as disease preventative sprays or when disease conditions are low. Increase to highest rate and shortest interval under moderate to heavy disease pressure. Normal spray volumes range from 200 to 1000 litres per hectare for dilute ground sprays, but can be up to 2000 litres per hectare for vineyards. Grapes: For use on all types of grapes (wine, table, raisin, and juice). Applications to grape should be made on a 14-day interval. Applications to strawberries, caneberries, goose berries and Saskatoon berries should be made on a 7 to 10-day interval. Resistance Management: Do not make more than 2 consecutive applications of PYRIOFENONE 300SC Fungicide or other Group U8 containing fungicides before rotating to a fungicide with a different mode of action. Restrictions: Do not apply more than 1.2 L/ha/year The Pre-Harvest Interval (PHI) for this crop is 0 days.

Cyproflu Fungicide

Saskatoon berries Suppression of Entomosporium leaf spot (Entomosporium mespilii) 775 to 975 The first application should be made during early bloom. A second application may be made 7 to 10 day later. A third application can be made if conditions remain favourable for disease development. Use higher rate and shorter application interval under conditions that promote rapid disease development or if there is a history of high disease pressure in the field. Apply in sufficient water to ensure thorough coverage (187-935 L/ha). Do not enter or allow worker entry into treated Saskatoon berry fields for handharvesting, pruning or thinning during the restricted entry interval (REI) of 10 days. For all other activities, do not enter or allow worker entry into treated areas within 12 hours after application. Do not apply within 1 day of harvest. Do not make more than 3 applications per year.

Pristine

Saskatoon Berries Entomosporium leaf spot (Entomosporium mespili) Gymnosporangium rust (Gymnosporangium nelsonii) Rate 1.6kg/ha and 4 applications per year and 0 pre-harvest entry days

For currants, gooseberries and Saskatoon berries: Do not enter or allow worker entry into treated fields for hand harvesting during the restricted-entry interval (REI) of 29 days. For all other activities, do not enter or allow worker entry into treated fields until residues have dried.


Additional Information


From: Scharf, Forrest AG <Forrest.Scharf@gov.sk.ca> Sent: April 20, 2018 11:58 AM To: Prairie Berries <prairieberries@sasktel.net> Subject: European Union reclassification of propiconazole

Hi Sandy,

I requested residue data from Croplife Canada and the registrant for Tilt and Topas (Syngenta).

Croplife Canada does not have residue data.

Syngenta provided the following information: “the data that supports the CDN MRL of 1.0 ppm was generated with DCBA (common moiety of propiconazole) whereas the EU MRL of 0.01 ppm is based on propiconazole parent.  We do not have data on propiconazole parent to answer this question”.

Ultimately; it appears we do not have an answer whether after the 38 day PHI the residue would be sufficiently low to allow export into the EU. I would advise anyone growing Saskatoon berries (who plans to sell into the EU market) not to apply propiconazole products in their orchard in 2018.

The industry (perhaps with Syngenta’s support) should collect berries treated with propiconazole this summer (I could possibly treat Saskatoons at the CSIDC orchard in Outlook for this purpose), and have them residue tested to determine whether the berries exceed the MRL.  I’ll check to see if there is a funding source that would support paying for the residue tests.

Best Regards,

Forrest

Forrest Scharf, PAg

Government of Saskatchewan

Provincial Specialist, Fruit Crops

Crops and Irrigation Branch, Ministry of Agriculture

125 – 3085 Albert Street

Regina, Canada   S4S-0B1

Bus: 306-787-4666

Cell: 306-535-4231

Email:  forrest.scharf@gov.sk.ca

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