For example, Germany’s first hay cut showed a decreasing trend relative to that of wild-grown grass (Bock et al. 2013 ).
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Differences in phenological term changes in field crops and wild plants - do they have the same response to climate change in Central Europe?
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For wild plants, most of the trends are statistically significant, with only a few species from a small number of sites exhibiting nonsignificant changes (of the 36 study areas, 30 exhibited a significant shift and 6 showed nonsignificant trends, but even those with a nonsignificant trend exhibited a shift to an earlier time).
Winter wheat, on the other hand, showed both significant and nonsignificant shifts; of the 66 study areas, 36 always showed a significant trend to an earlier time, and the remaining 30 did not show changes, with a change in phenophase date to an earlier time and, in two cases, to a later time.