Fig. 1.

UK wheat cropped area 2010 (ha per 25 km²), data from EDINA (2018) including outline of key growing area. Location of the 25 UK sites included in the study (blue and red dots). Box plot results are presented for those sites with red dots (10 sites) and the letters within are used to split these 10 sites into 4 regions (referring to the cardinal direction of the site within the wheat growing area): north (N), east (E), south (S) and west (W). (For interpretation of the references to color in this figure legend, the reader is referred to the web version of this article.)