## 3 Results
### Two-Row Variety 'Sandra' in 2021
\begin{table}
\begin{tabular}{c c c c c c c c} \hline \hline  & **Treatment** & **N Fertilization [kg ha\({}^{-1}\)]** & **FM Yield** & **Protein [\%]** & **N Uptake** & **N Surplus** & **NUE** \\  & & **[t ha\({}^{-1}\)]** & **Protein [kg ha\({}^{-1}\)]** & **[kg ha\({}^{-1}\)]** & **[kg ha\({}^{-1}\)]** & **[\%]** \\ \hline N 1 & 0/0/0 = 0 & 0/0/0 = 0 & 2.9 k & 8.6 l & 35.4 p & \(-\)35.4 l & \\ N 2 & 40/30/0 = 70 & 40/30/0 = 70 & 7.0 l & 8.7 l & 84.3 o & \(-\)14.3 k & 69.8 a \\ N 3 & 40/30/40 = 110 & 40/30/40 = 110 & 8.1 l & 9.8 k & 109.6 h & 0.4 k & 67.4 a \\ N 4 & 40/60/40 = 140 & 40/60/40 = 140 & 8.9 h & 10.6 h & 130.4 h & 9.7 h & 67.8 a \\ N 5 & 70/30/40 = 140 & 70/30/40 = 140 & 9.2 h & 10.2 h & 128.7 h & 11.4 h & 66.6 a \\ N 6 & 160/0/0 = 160 & 160/0/0 = 160 & 9.9 abc & 10.1 h & 137.3 h & 22.7 defigh & 63.7 a \\ N 7 & 70/90/0 = 160 & 70/90/0 = 160 & 9.6 cdef & 11.1 eigh & 148.4 h & 11.7 gh & 70.6 a \\ N 8 & 40/90/40 = 170 & 40/90/40 = 170 & 9.2 h & 11.8 defi & 148.7 gh & 21.3 defigh & 66.6 a \\ N 9 & 70/60/40 = 170 & 70/60/40 = 170 & 9.7 cdef & 11.5 h & 154.3 h & 158.5 eigh & 69.9 a \\ N 10 & 70/90/40 = 200 & 70/90/40 = 200 & 10.1 abc & 12.2 o & 170.2 bcde & 29.8 cdef & 67.4 a \\ N 11 & 70/120/40 = 230 & 70/120/40 = 230 & 9.9 abc & 13.4 ab & 182.2 ab & 47.9 ab & 63.8 a \\ N 12 & CFO & 80/62/40 = 182 & 10.1 abc & 11.7 def & 162.7 defi & 19.3 defigh & 69.9 a \\ N 13 & \(\text{GFO}0-10\%\) & 72/65/36 = 164 & 9.6 cdef & 11.2 eigh & 148.8 gh & 15.2 eigh & 69.1 a \\ N 14 & \(\text{GFO}20\%\) & 64/50/32 = 146 & 9.6 cdef & 10.5 h & 138.6 h & 7.4 h & 70.7 a \\ N 15 & \(\text{GFO}30\%\) & 564/34/28 = 127 & 8.7 h & 9.6 h & 115.8 h & 11.2 gh & 63.3 a \\ N 16 & \(\text{GFO}10\%\) & 88/68/44 = 200 & 10.2 abc & 12.1 ode & 169.1 bdef & 30.9 bcde & 66.8 a \\ N 17 & \(\text{BESyD}+\text{Yara N-Texter}\) & 55/65/50 = 170 & 9.5 efe & 11.4 defigh & 150.1 h & 20.0 cdefigh & 67.4 a \\ N 18 & \(\text{Sensor}\ 10\,\text{h}^{-1}\) & 80/69/60 = 209 & 10.4 a & 12.8 bc & 183.1 ab & 26.2 cdef & 70.8 a \\ N 19 & \(\text{Sensor}\,\text{10}\%\) & 76/65/48 = 189 & 9.9 abc & 12.0 ode & 164.2 cdefi & 24.4 cdefigh & 68.3 a \\ N 20 & \(\text{Sensor}\,\text{20}\%\) & 72/47/30 = 149 & 9.7 bcde & 10.5 gh & 141.5 h & 7.5 h & 71.2 a \\ N 21 & \(\text{Sensor}\,\text{30}\%\) & 68/39/18 = 125 & 9.0 h & 9.6 h & 118.8 h & 6.0 i & 66.9 a \\ N 22 & \(\text{Sensor}\,\text{10}\%\) & 84/84/80 = 248 & 9.8 bcde & 14.0 a & 189.2 a & 57.8 a & 62.2 a \\ N 23 & \(\text{Sensor}\,\text{10}\) ta\({}^{-1}\) & \(\text{P}\) + 30\% & 80/71/64 = 215 & 10.0 abc & 12.9 h & 179.9 abc & 35.4 bcd & 67.2 a \\ N 24 & \(\text{Sensor}\,\text{10}\) ta\({}^{-1}\) & \(\text{P}\) + 30\% & 80/72/64 = 216 & 10.1 abc & 12.8 h & 178.1 ab & 37.7 bc & 66.1 a \\ N 25 & \(\text{Sensor}\,\text{11}\) ta\({}^{-1}\) & \(\text{S}\) + 6\% & 88/64/61 = 213 & 10.2 abc & 12.8 h & 179.2 abc & 34.3 bcd & 67.4 a \\ N 26 & \(\text{Sensor}\,\text{8}\) ta\({}^{-1}\) & 56/23/68 = 147 & 9.0 h & 10.8 gh & 134.2 h & 13.1 gh & 67.1 a \\ N 27 & \(\text{Sensor}\,\text{balance}\) & 80/73/36 = 189 & 10.3 ab & 11.9 ode & 168.0 bdef & 21.0 cdefigh & 70.1 a \\ N 28 & \(\text{Sensor}\,\text{GFO}\) & 80/73/29 = 182 & 10.0 abcde & 11.5 cdefig & 157.9 efg & 24.1 cdefigh & 67.3 a \\ \hline \hline \end{tabular}  
* Letters following the values (e.g., “abcd”) indicate statistical groupings based on the post-hoc test.  
\end{table} 
Table 4: Yields and N balances of variety Sandra in the year 2021. Figure 2: Relationships between N fertilization and yield and between N fertilization and N surplus for the year 2021 (Sandra). Yield is expressed as fresh matter, standardized to a dry matter content of 86%. The upper lines depict the relationship between N fertilization and yield, whereas the lower lines represent the relationship between N fertilization and N surplus.