Table 3.

Plant P concentration and root/shoot ratio at the final harvest (16 days after treatment) and P influx rate between 7 and 16 days of white lupin, faba bean and maize grown with low (LP) and high P supply (HP) under two N forms [ca(NO₃)₂ and NH₄NO₃].

Parameters	Crops	Ca(NO3)2-N		NH4NO3-N		LSD	P level	N form	P × N
		LP	HP	LP	HP
P concentration	White lupin	0.35	0.76	0.36	0.94	0.07	***	*	*
(g P 100 g−1 DW)	Faba bean	0.39	1.12	0.47	1.15	0.09	***	n.s.	n.s.
	Maize	0.10	1.27	0.12	1.26	0.05	***	n.s.	n.s.
P influx	White lupin	0.02	0.07	0.02	0.10	0.01	***	n.s.	*
(mg P m−1 root length d−1)	Faba bean	0.01	0.12	0.02	0.11	0.02	***	n.s.	n.s.
	Maize	0.00	0.08	0.00	0.08	0.01	***	n.s.	n.s.
root/shoot ratio	White lupin	16.5	15.6	15.6	18.1	1.8	n.s.	n.s.	n.s.
(m root length g−1 shoot DW)	Faba bean	31.3	12.2	14.9	18.0	3.5	***	**	***
	Maize	105.3	28.0	112.6	30.5	8.0	***	n.s.	n.s.

*P ≤0.05;

**P < 0.01;

***P < 0.001; n.s., not significant at P = 0.05.