Technical Update Pdf - Syngenta
Technical Update Pdf - Syngenta
Technical Update Pdf - Syngenta
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SYNGENTA SPECIALIST CROPS<br />
A new broad spectrum fungicide for bulb onions,<br />
garlic and shallots<br />
SUMMARY SHEE T SPRING 2008<br />
In Brief<br />
• Liquid formulation containing<br />
azoxystrobin and chlorothalonil<br />
• Trials show robust, broad-spectrum<br />
disease control: Botrytis squamosa<br />
(leaf spot), downy mildew and<br />
Cladosporium allii-cepae<br />
(leaf blotch)<br />
• Contains active ingredients from<br />
different chemical groups, this<br />
benefits an anti-resistance strategy<br />
• Azoxystrobin, a strobilurin<br />
fungicide has the ability to extend<br />
green canopy<br />
OLYMPUS – Product Summary<br />
Formulation<br />
Pack Size<br />
Active Ingredients<br />
Recommended Rate<br />
Liquid suspension concentrate<br />
5 litre<br />
80 g/l azoxystrobin + 400 g/la Chlorothalonil<br />
2.5 l/ha<br />
Leaf Spot<br />
Crop<br />
Maximum<br />
individual dose<br />
Maximum number<br />
of applications<br />
Latest time<br />
of application<br />
Bulb onions,<br />
shallots and garlic<br />
2.5 l/ha 2 14 days<br />
Disease control:<br />
Broad-spectrum activity is the key strength of OLYMPUS<br />
• Leaf Spot: Botrytis squamosa*<br />
Leaf Blotch<br />
• Leaf Blotch: Cladosporium allii-cepae*<br />
*Trials demonstrate good activity<br />
OLYMPUS provides high levels of control against these important diseases. Both Leaf<br />
Spot and Leaf Blotch are often associated with secondary infection following an initial<br />
Downy Mildew attack. Other fungicides used in bulb onions, garlic and shallots** may<br />
fail to give the best green leaf protection due to failure to control these pathogens<br />
**Which are downy mildew specific<br />
• Downy Mildew: Peronospora destructor<br />
Downy Mildew<br />
OLYMPUS provides useful suppression of this pathogen. It should be used in alternation<br />
with specific downy mildew fungicides to give best control.
Anti resistance strategy<br />
• Azoxystrobin is a strobilurin and an important fungicide<br />
for broad-spectrum disease control in bulb onions,<br />
garlic and shallots, helping to maximise marketable yields<br />
• Mixing fungicides with different modes of action may help<br />
minimise resistance development. OLYMPUS is a mixture<br />
of a strobilurin with a chloronitrile fungicide active against<br />
the same key diseases in onions<br />
• To safeguard the future of the strobilurin fungicides it is<br />
important to further alternate OLYMPUS with alternative<br />
modes of action<br />
• The FRAC recommendations for the number of strobilurin<br />
treatments in a programme, when applied in a mixture<br />
such as OLYMPUS are as follows:<br />
Total number<br />
of fungicide<br />
applications per crop<br />
Up to<br />
5<br />
6 7 8 9 10<br />
Botrytis<br />
Maximum recommended<br />
strobilurin sprays<br />
in mixture<br />
2 3 3 4 4 5<br />
OLYMPUS – Botrytis squamosa control in bulb onions<br />
FOLIO GOLD fb OLYMPUS fb<br />
dimethomorph+mancozeb (x2)<br />
OLYMPUS 2.5 l/ha (x6)<br />
mancozeb fb dimethomorph<br />
+mancozeb (x3)<br />
Untreated<br />
OLYMPUS sets new standards<br />
controlling leaf spot Botrytis squamosa<br />
Trial at Stapleford cv. Sunskin 2006<br />
Spray Programme: started at 4-6 leaves.<br />
6 sprays applied at 7-14 day intervals. LSD: 8.5<br />
0 10 20 30 40 50<br />
% Green leaf area 3 weeks after final application<br />
(Impact of botrytis spp. infection)<br />
In a 6 spray programme:<br />
1 x AMISTAR + BRAVO may be applied in addition to 2 x OLYMPUS<br />
OLYMPUS – benefits and strengths<br />
Proven and tested<br />
active ingredients<br />
Broad spectrum activity<br />
Highly protectant<br />
activity<br />
Improved quality<br />
Tank mixing efficiency<br />
The active ingredients in OLYMPUS, azoxystrobin and chlorothalonil are well tried and<br />
tested in onions<br />
Trials have demonstrated good efficacy against the major pathogens; Leaf Spot - Botrytis squamosa<br />
and Leaf Blotch - Cladosporium as well as useful suppression of downy mildew. Use in alternation<br />
with specific downy mildew products for best control.<br />
During periods of high disease pressure, maintain a 7 day spray programme. Both active ingredients<br />
prevent the spread and development of the major diseases<br />
Excellent disease control combined with the strobilurin effect of azoxystobin encourages the green<br />
canopy to persist and delays senescence. This enhances both skin retention and colour of the<br />
onions improving marketability<br />
OLYMPUS has been successfully mixed with trace elements and fungicides. This includes brands<br />
of Manganese sulphate and Magnesium sulphate<br />
<strong>Syngenta</strong> Crop Protection UK Ltd CPC4, Capital Park, Fulbourn, Cambridge CB21 5XE Tel: Cambridge (01223) 883400 Fax: 01223 882195<br />
<strong>Technical</strong> Enquiries Tel: 0800 169 6058 E-mail: customer.services@syngenta.com Website: www.syngenta-crop.co.uk<br />
AMISTAR®, FOLIO GOLD®, and OLYMPUS® are Registered Trademarks of a <strong>Syngenta</strong> Group Company. BRAVO® is a Trademark of GB<br />
Biosciences. AMISTAR (MAPP 10443) contains azoxystrobin, BRAVO (MAPP 10518) contains cholorothalonil, FOLIO GOLD (MAPP 10704)<br />
contains metalaxyl-M and chlorothalonil, OLYMPUS (MAPP 13797) contains azoxystrobin and chlorothalonil. All other brand names used<br />
are trademarks of other manufacturers in which proprietary rights may exist. Always read the label. Use pesticides safely.<br />
©<strong>Syngenta</strong> AG March 2008. VEG44. GQ.
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