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Flutriafol – the Asian
soybean rust standard
Dr Robert Noon, Cheminova A/S, Denmark
e mail: [email protected]
Contents of presentation
• Introduction to Cheminova
• Information on flutriafol
• Field trials – Brazil, Zimbabwe, USA
• Based near Lemvig, Denmark• Group includes Hardi sprayers• Main shareholder Aarhus
University, DK• In USA since 1987 (Wayne, NJ)
Cheminova
Flutriafol and products
• A triazole introduced in 1981 by ICI• Bought by Cheminova from Syngenta in 2001• Not registered in the USA or authorized for use
under any FIFRA Section 18 exemption, although it is the subject of Section 18 requests submitted to the US EPA by several states
• Foliar sprays• Microgranules - maize and coffee• Seed treatments
Flutriafol – the soybean rust standard
• Given top rating in Brazil• Highly active against rust • Highly systemic• Strongly curative• Very persistent in effect – extended spray
intervals or fewer sprays• Outstanding yield results • No crop damage • Can be mixed for added spectrum
Cedara, South Africa 2003/042 sprays, 82 and 103 DAS(Eve du Preez, KwaZulu-Natal Dept Agric. & Environ. Affairs)
0 10 20 30 40 50 60 70 80 90
Flutriafol
Flusilazole/carbendazim low rate
Tebuconazole
Flusilazole/carbendazim high rate
Flusilazole
Triadimenol formn 1
Difenoconazole
Triadimenol formn 2
Triforine
Mancozeb
Azoxystrobin
Untreated
Final % disease severity
no disease
Cedara, South Africa 2003/042 sprays, 82 and 103 DAS (Eve du Preez, KwaZulu-Natal Dept Agric. & Environ. Affairs)
0 1 2 3 4 5 6
Untreated
Azoxystrobin
Mancozeb
Triadimenol formn 2
Triforine
Difenoconazole
Tebuconazole
Triadimenol formn 1
Flusilazole
Flusilazole/carbendazim low rate
Flusilazole/carbendazim high rate
Flutriafol
Yields (t/ha)
Cedara, South Africa 2003/042 sprays, 82 and 103 DAS(Eve du Preez, KwaZulu-Natal Dept Agric. & Environ. Affairs)
0 5 10 15 20 25 30 35 40
Untreated
Flusilazole/carbendazim high rate
Flusilazole
Tebuconazole
Difenoconazole
Flusilazole/carbendazim low rate
Triforine
Mancozeb
Azoxystrobin
Triadimenol formn 2
Triadimenol formn 1
Flutriafol
Number of days persistence
Brazil official data from 11 trials, 2003/041 spray at R2/R3, assessed R6(from ‘Cultivar’, September 2004)
0
10
20
30
40
50
60
70
Un
trea
ted
Prop
icon
azol
e 1
25
Tri
flox
ystr
obin
/pro
pic
onaz
ole
50
/50
Dif
enoc
onaz
ole
50
Azo
xyst
rob
in 5
0
Flu
qu
inco
naz
ole
62
.5
Myc
lob
uta
nil
10
0
Ep
oxic
onaz
ole
37
.5
Pyra
clos
trob
in/e
pox
icon
azol
e 6
6.5
/25
Teb
uco
naz
ole
20
0 1
00
Tet
raco
naz
ole
50
Tri
flox
ystr
obin
/cyp
roco
naz
ole
56
.2/2
4
Azo
xyst
rob
in/c
ypro
con
azol
e 6
0/2
4
Teb
uco
naz
ole
25
0 1
00
Flu
tria
fol
62
.5
% Disease severity (means of 11 trials)
Brazil – yield comparisons 2003/046 independent trials, various institutes, 2 sprays
% increases over untreated
% Increases over untreated Trial
Treatment Rate g ai/ha 1 2 3 4 5 6
flutriafol 62.5 64 73 21 74 73 24
tebuconazole 100 39 62 11 49 59 35
difenoconazole 75* 24 47 11 58 48 10
epoxiconazole 37.5 21 52 8 23
azoxystrobin 50 51 11 34 55 11
epoxi/pyraclo 25/66.5 58 65 16 69 66
*rate was 50 g ai/ha in trial 6
USDA Zimbabwe data 20052 and 3 sprays, 20 day intervals(Miles, USDA)
2 sprays 3 sprays 2 sprays 3 spraysfenarimolflutriafol
metconazoletebuconazoletetraconazole
flusilazoletriflumizole
pyraclostrobinmetconazole+pyraclostrobinpropiconazole+azoxystrobinazoxystrobin+cyproconazole
oxycarboxinchlorothalonil
Gwebi Rattray Arnold
triazoles
strobilurin
triazole+strobilurin
other compounds
USDA Zimbabwe data 20052 and 3 sprays, 20 day intervals, AUDPC(Miles, USDA)
2 sprays 3 sprays 2 sprays 3 sprays 2 sprays 3 spraysfenarimol 195 73 0 0 134 37flutriafol 0 0 0 0 0 0
metconazole 9 0 216 6 5 108tebuconazole 3 0 28 0 2 14tetraconazole 0 0 0 0 0 0
flusilazole 73 0 0 0 37 0triflumizole 275 2166 166 31 1221 1166
pyraclostrobin 1 0 0 0 0.5 0metconazole+pyraclostrobin 18 0 0 0 9 0propiconazole+azoxystrobin 98 3 181 72 51 92azoxystrobin+cyproconazole 490 500 - - 495 500
oxycarboxin 359 179 0 0 269 90chlorothalonil 400 279 238 56 340 259
Gwebi Rattray Arnold Mean of two sites
Georgia data 20051 and 2 sprays, 31 day interval, % incidence(Kemerait, U. of Georgia)
0%
20%
40%
60%
80%
100%
Untreated Flutriafol 1spray
Flutriafol 2sprays
Tetraconazole2 sprays
First Spray 20 July, Second Spray 12 August
Assessment 26 September (45 days after second spray, 68 days after first spray)
Florida data 20052 sprays, 21 day interval, disease severity (Marois, University of Florida)
0.0
1.0
2.0
3.0
4.0
5.0
6.0
7.0
8.0
28DAT2 35DAT2 42DAT2
Untreated
Myclobutanil 2 sprays
Myclobutanil thenmyclobutanil+pyraclostrobin
Myclobutanil thenmyclobutanil+mancozeb
Flutriafol 2 sprays
Disease severity assessed on a 0 to 8 scale
Florida data 20052 sprays, 14, 21, 28 day intervals, disease severity (Marois, University of Florida)
0.0
1.0
2.0
3.0
4.0
5.0
6.0
7.0
8.0
37DAT1 54DAT1 61DAT1
Untreated
Myclobutanil 21 days
Myclo fb myclo/pyraclo21 daysTebuconazole 14 days
Teb fb teb/trifloxy/propi14 daysTeb/trifloxy/propi fb teb14 daysTrifloxy/teb 14 days
Flutriafol 21 days
Flutriafol 28 days
Disease severity assessed on a 0 to 8 scale
Section 18 Request to Control Soybean Rust- details of flutriafol portion of April 2005 request under review by EPA
• Formulation contains flutriafol, 125 SC• Rate per acre: 7 fluid ounces• Maximum number of sprays: 2• Spray interval: 18 to 20 days• Pre-harvest interval: 21 days
Conclusion - Flutriafol
- very effective against soybean rust- protects yield best- has useful spectrum- can be tank-mixed - subject of Section 18 request - registration supported by Cheminova- a significant option for the US soybean farmer
