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Winter wheat based rotations – Agronomic evaluation of IPM
strategies in on-station experiments
P. Kudsk, C. Colnenne-David, S. Dachbrodt-Saaydeh, R. Kierzek, B. Melander, A. Newton, L. N. Jørgensen & C. Toque
IPM Innovation in Europe, 14-16 January 2015 Poznan, Poland
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Location of on-station trials
Speaker's name Meeting and date IPM Innovation in Europe, 14-16 January 2015
Poznan, Poland
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Location of on-station trials
IPM Innovation in Europe, 14-16 January 2015 Poznan, Poland
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Experimental approach
Speaker's name Meeting and date
• Four new long-term experiments were initiated in D, DK, PL and UK
• Existing experiments were used/modified in F (INRA at Versailles and Arvallis at Boigneville)
• Comparing current practice (CP) to two levels of IPM (intermediate (IM) and advanced (AD))
IPM Innovation in Europe, 14-16 January 2015 Poznan, Poland
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Trial design
• Trials in D, DK, PL were 3-year rotations, small-plot experiments, all crops every year
• Trial at INRA in F was a 4-year (CP), 5 year (IM) and 6-year rotation (AD), two locations, large plots (4000 m2), AD was no pesticides, all crops not cultivated every year
• Trial at Arvalis in F was 4-year (CP & IM) and 7-year rotation (AD), large plots (hectares), AD was organic+perennial crop, all crops cultivated every year
• Ex-ante analysis using DEXiPM
IPM Innovation in Europe, 14-16 January 2015 Poznan, Poland
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Treatments
• Current practice
– Good agricultural practice (primarily winter annual crops, pest monitoring, use of optimized pesticide doses)
• Intermediate IPM
– Crop diversification, cultural practices, disease resistant varieties, non chemical weed control methods etc.
• Advanced IPM
– As intermediate IPM + cover crops, forecasting models + innovative tools
Speaker's name Meeting and date IPM Innovation in Europe, 14-16 January 2015
Poznan, Poland
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IWM tools
• Weeds
– Crop diversification, seeding rate, delayed sowing, false seed bed, harrowing, interrow cultivation, herbicide decison support system
• Diseases
– Resistant varieties, variety mixtures, forecasting models, biological control methods, elicitors, electron seed treatment
• Insect pests
– None
Speaker's name Meeting and date IPM Innovation in Europe, 14-16 January 2015
Poznan, Poland
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Pest control
• General good control of weeds, diseases and pests in the CP and IM systems
• Lower and more variable effects in the AD system in some locations in some years but no general trends
• Weed flora shifts have occured in the French trials and are becoming apparent in the Polish trial
• More detailed statistical analyses will be done
Speaker's name Meeting and date IPM Innovation in Europe, 14-16 January 2015
Poznan, Poland
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Winter wheat yields (t/ha) Denmark UK Germany
Poland France (INRA) France (Arvalis)
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Yields
• Winter wheat yields generally highest in the CP system
• Winter wheat yield losses in the IM and AD systems varied between locations and years
• Yield differences smaller for break crops (OSR, winter barley and maize) than for winter wheat.
Speaker's name Meeting and date IPM Innovation in Europe, 14-16 January 2015
Poznan, Poland
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IPM tool: Mechanical weeding
Speaker's name Meeting and date IPM Innovation in Europe, 14-16 January 2015
Poznan, Poland
Interrow cultivation
Weed harrowing
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IPM tool: Weed harrowing
Speaker's name Meeting and date
Pct covera
ge/N
um
ber
of panic
les m
-2
--------Dicots------- -------APESV-------
IPM Innovation in Europe, 14-16 January 2015 Poznan, Poland
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IPM tool: Weed harrowing P
ct covera
ge/N
um
ber
of panic
les m
-2
--------Dicots------- -------APESV-------
0
2
4
6
8
10
12
14
2012 2013 2014
CP
IM
AD
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IPM tool: Variety mixtures
---2012--- -------2013-------- -------2014-------
% S
epto
ria o
n leaf
1
IPM Innovation in Europe, 14-16 January 2015 Poznan, Poland
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IPM tool: Variety mixtures
---2012--- -------2013-------- -------2014-------
% S
epto
ria o
n leaf
1
IPM Innovation in Europe, 14-16 January 2015 Poznan, Poland
Control plots
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IPM tool: Variety mixtures
Speaker's name Meeting and date
---2012--- -------2013-------- -------2014-------
% S
epto
ria o
n leaf
1
IPM Innovation in Europe, 14-16 January 2015 Poznan, Poland
Treated plots
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IPM tool: Variety mixtures
Current Susceptible variety Intermediate Resistant variety Advanced Variety mixture
Untreated Treated
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IPM tool: Delayed sowing
Speaker's name Meeting and date
Mild Cold Mild
IPM Innovation in Europe, 14-16 January 2015 Poznan, Poland
t/h
a
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Pesticide use
Speaker's name Meeting and date
TF
I
IPM Innovation in Europe, 14-16 January 2015 Poznan, Poland
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Thank you for your attention!
The research leading to these results has received funding from the European Union Seventh Framework Programme (FP7/ 2007-2013) under the grant agreement n°265865- PURE