The chart consists of two illustrations – one showing the number of days with soil humidity of less than 30 per cent usable field capacity (nFK) for winter wheat on sandy clay while the other shows – for the same number of days – the comparable value for winter wheat on clay-rich sand, each for the period of 1961 to 2022. The multi-annual mean for the period of 1991 to 2020 for sandy clay amounts to 5.3 days. The linear trend for Germany regarding the period examined amounts to an increase by 8.6 days.
Figure 10: Soil moisture values - clay-rich sand

The chart consists of two illustrations – one showing the number of days with soil humidity of less than 30 per cent usable field capacity (nFK) for winter wheat on sandy clay while the other shows – for the same number of days – the comparable value for winter wheat on clay-rich sand, each for the period of 1961 to 2022. The multi-annual mean for the period of 1991 to 2020 for sandy clay amounts to 5.3 days. The linear trend for Germany regarding the period examined amounts to an increase by 8.6 days. The height of the bars increases, albeit with annual fluctuations. Most of the values vary between 0 and 5 days, while peak values lie above 20 days, and the only value above 25 days was recorded for 2022. The multi-annual mean from 1991 to 2022 for clay-rich sand amounts to 19.5 days. The linear trend for Germany regarding the period examined amounts to an increase by 18.6 days. The height of the bars increases, albeit with annual fluctuations. Most of the values vary between 0 and 20 days, while peak values lie above 20 days, and the only value above 40 days was recorded in 2022.

Source: DWDimage download

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