## 3 Results
### Carbon Construction Cost and Photosynthetic Rate
\begin{table}
\begin{tabular}{c c c c c c} \hline \hline  & \multicolumn{4}{c}{**Low Phosphate**} \\ \hline
**Biomass (g)** & **Plant sp.** & \(-\)**N\(-\)R** & \(-\)**N\(+\)R** & **+N\(-\)R** & **+N\(+\)R** \\ \hline \multirow{2}{*}{Shoot} & cba & 0.165 \(\pm\) 0.07 a & 0.332 \(\pm\) 0.07 b & 0.485 \(\pm\) 0.08 c & 0.654 \(\pm\) 0.03 d \\  & cst & 0.312 \(\pm\) 0.04 a & 0.367 \(\pm\) 0.01 b & 0.645 \(\pm\) 0.10 c & 0.640 \(\pm\) 0.05 c \\ \hline \multirow{2}{*}{Root} & cba & 0.050 \(\pm\) 0.04 a & 0.114 \(\pm\) 0.008 b & 0.189 \(\pm\) 0.04 b & 0.202 \(\pm\) 0.008 c \\  & cst & 0.115\(\pm\)0.02 a & 0.141 \(\pm\) 0.008 b & 0.160 \(\pm\) 0.02 c & 0.186 \(\pm\) 0.008 c \\ \hline \multirow{2}{*}{Nodules} & cba & \(\Theta\) & 0.0279 \(\pm\) 0.001 a & \(\Theta\) & 0.036 \(\pm\) 0.005 a \\  & cst & \(\Theta\) & 0.0216 \(\pm\) 0.003 a & \(\Theta\) & 0.031 \(\pm\) 0.001 a \\ \hline \multirow{2}{*}{Whole plant} & cba & 0.215 \(\pm\) 0.05 a & 0.446 \(\pm\) 0.03 b & 0.674 \(\pm\) 0.06 b & 0.856 \(\pm\) 0.01 c \\  & cst & 0.327 \(\pm\) 0.03 a & 0.508 \(\pm\) 0.04 b & 0.805 \(\pm\) 0.05 c & 0.826 \(\pm\) 0.06 c \\ \hline \multicolumn{4}{c}{**High Phosphate**} \\ \hline \multirow{2}{*}{Shoot} & cba & 0.213 \(\pm\) 0.04 a & 0.403 \(\pm\) 0.03 b & 0.882 \(\pm\) 0.07 d & 0.828 \(\pm\) 0.03 c \\  & cst & 0.124 \(\pm\) 0.01 a & 0.566 \(\pm\) 0.02 b & 0.985 \(\pm\) 0.06 d & 0.623 \(\pm\) 0.06 c \\ \hline \multirow{2}{*}{Root} & cba & 0.069 \(\pm\) 0.006 a & 0.124 \(\pm\) 0.01 b & 0.129 \(\pm\) 0.03 b & 0.142 \(\pm\) 0.05 b \\  & cst & 0.217 \(\pm\) 0.007 a & 0.173 \(\pm\) 0.01 b & 0.191 \(\pm\) 0.04 c & 0.136 \(\pm\) 0.02 b \\ \hline \multirow{2}{*}{Nodules} & cba & \(\Theta\) & 0.011 \(\pm\) 0.003 a & \(\Theta\) & 0.010 \(\pm\) 0.001 a \\  & cst & \(\Theta\) & 0.014 \(\pm\) 0.001 a & \(\Theta\) & 0.012 \(\pm\) 0.01 a \\ \hline \multirow{2}{*}{Whole plant} & cba & 0.329 \(\pm\) 0.03 a & 0.546 \(\pm\) 0.01 b & 1.49 \(\pm\) 0.07 d & 0.902 \(\pm\) 0.01 c \\  & cst & 0.241 \(\pm\) 0.01 a & 0.733 \(\pm\) 0.06 b & 0.931 \(\pm\) 0.08 d & 0.822 \(\pm\) 0.07 c \\ \hline \multicolumn{4}{c}{Values are means \(\pm\) standard deviation. Different letters indicate significant differences amongst treatments (\(p<0.05\)). All means are values obtained from 10 plants, except for treatment \(-\)N\(-\)R where only 5 seedlings survived. \(\Theta\) indicates no nodulation.} \\ \hline \end{tabular}
\end{table} 
Table 1: Biomass production of _C. balansae_ and _C. striatus_ seedlings under four treatments of N acquisition under two levels of P nutrition. \end{table}
Table 2: Leaf area, leaf area:plant dry weight and photosynthetic rate of seedlings of _C. balansae_ and _C. stritatus_ under four treatments of N acquisition under two levels of P nutrition. Figure 1: (**a**) Plant construction costs; (**b**) Root allocation and (**c**) Nodule allocation of 22-week-old _Cytisus balansae_ (cba) and _Cytisus stritatus_ (cst) seedlings, grown in sand culture treated with \(-\)N\(-\)R, +N\(-\)R, +N\(-\)R and +N\(+\)R, under two levels of phosphate (Low and High). Values are means (\(n=10\), except for \(-\)N\(-\)R where \(n=6\)) \(\pm\) standard deviation. Different letters indicate significant differences among treatments (* \(p\leq 0.05\)).