- Site conditions determine heat and drought induced yield losses in wheat and rye in Germany

Entry date (day of year, DOY) of the phenological stages stem elongation (blue), heading (green), and yellow ripening (yellow) (A) distribution of observed stage entry (DOY) for winter wheat (top) and winter rye (bottom) over the whole observation period (1993–2021). Dashed lines represent median DOY values. (B) Trend development of stage entry (DOY) from 1993 to 2021 for winter wheat (left) and winter rye (right). Absolute trend (annual means) is displayed as solid line and statistic trend (linear regression) is displayed as dashed line. Values display delta (Δ) in absolute trend development and p values of the trend regression curves are given in brackets with p < .001 = (***); p < .01 = (**); p < .05 = (*); p < .1 = (.); p > .1 = (n.s.). Values for trend development of stage entry (4B) are listed in table C in the appendix.

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Site conditions determine heat and drought induced yield losses in wheat and rye in Germany - Scientific Figure on ResearchGate. Available from: https://www.researchgate.net/figure/Entry-date-day-of-year-DOY-of-the-phenological-stages-stem-elongation-blue-heading_fig4_377860484 [accessed 24 May 2025]

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Entry date (day of year, DOY) of the phenological stages stem elongation (blue), heading (green), and yellow ripening (yellow) (A) distribution of observed stage entry (DOY) for winter wheat (top) and winter rye (bottom) over the whole observation period (1993–2021). Dashed lines represent median DOY values. (B) Trend development of stage entry (DOY) from 1993 to 2021 for winter wheat (left) and winter rye (right). Absolute trend (annual means) is displayed as solid line and statistic trend (linear regression) is displayed as dashed line. Values display delta (Δ) in absolute trend development and p values of the trend regression curves are given in brackets with p < .001 = (***); p < .01 = (**); p < .05 = (*); p < .1 = (.); p > .1 = (n.s.). Values for trend development of stage entry (4B) are listed in table C in the appendix.

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<a href="https://www.researchgate.net/figure/Entry-date-day-of-year-DOY-of-the-phenological-stages-stem-elongation-blue-heading_fig4_377860484"><img src="https://www.researchgate.net/publication/377860484/figure/fig4/AS:11431281224935102@1708491110796/Entry-date-day-of-year-DOY-of-the-phenological-stages-stem-elongation-blue-heading.jpg" alt="Entry date (day of year, DOY) of the phenological stages stem elongation (blue), heading (green), and yellow ripening (yellow) (A) distribution of observed stage entry (DOY) for winter wheat (top) and winter rye (bottom) over the whole observation period (1993–2021). Dashed lines represent median DOY values. (B) Trend development of stage entry (DOY) from 1993 to 2021 for winter wheat (left) and winter rye (right). Absolute trend (annual means) is displayed as solid line and statistic trend (linear regression) is displayed as dashed line. Values display delta (Δ) in absolute trend development and p values of the trend regression curves are given in brackets with p < .001 = (***); p < .01 = (**); p < .05 = (*); p < .1 = (.); p > .1 = (n.s.). Values for trend development of stage entry (4B) are listed in table C in the appendix."/></a>