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Figure 1

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Geographical location of field trials in Southwestern France (“Midi-Pyrénées” Region). Legend: # Field trial locations. Experiments were located in 21 sites, i.e. 5 administrative subdivisions of the Region, the departments Haute-Garonne (9 sites), Tarn (4 sites), Tarn et Garonne (5 sites), Gers (2 sites) and Ariège (1 site).