Table 3.

The influence of N and P supply rates on leaf N and P concentration, total P accumulated, leaf area production, light saturated photosynthetic rate (A_max), and quantum yield efficiency (QYE)

Factors
A	B	SLN (g N m−2)			SLP (g P m−2)			Total P (g plant−1 × 10−3)			Leaf area (cm2 plant−1)			Amax (µmol CO2 m−2 s−1)			QYE (µmol CO2 µmol Q−1 × 10−2)
10 ppm N	LP	0·721 ± 0·067	a	0·045 ± 0·004	c	3·171 ± 0·368	a	117·7 ± 21·6	a	2·180 ± 0·253	a	0·230 ± 0·016	a
25 ppm N	LP	0·812 ± 0·070	ab	0·042 ± 0·005	bc	3·412 ± 0·377	a	157·9 ± 24·3	ab	7·562 ± 0·620	b	1·001 ± 0·116	b
50 ppm N	LP	0·871 ± 0·074	abc	0·038 ± 0·003	abc	3·571 ± 0·366	a	197·6 ± 19·5	bcd	12·110 ± 0·792	c	1·541 ± 0·144	c
100 ppm N	LP	0·969 ± 0·099	bcd	0·034 ± 0·004	abc	3·850 ± 0·346	a	250·3 ± 20·3	e	15·039 ± 0·994	d	1·830 ± 0·180	cd
250 ppm N	LP	1·036 ± 0·098	cde	0·031 ± 0·004	ab	4·128 ± 0·628	a	307·1 ± 25·6	f	17·166 ± 1·248	ef	2·140 ± 0·123	d
500 ppm N	LP	1·111 ± 0·137	de	0·029 ± 0·003	a	4·309 ± 0·522	a	355·8 ± 30·8	f	18·374 ± 1·076	fg	2·320 ± 0·119	de
10 ppm N	HP	1·098 ± 0·097	de	0·124 ± 0·010	f	9·903 ± 1·171	b	177·1 ± 21·7	bc	6·398 ± 0·516	b	2·739 ± 0·144	e
25 ppm N	HP	1·230 ± 0·087	ef	0·120 ± 0·009	f	10·525 ± 0·972	b	210·8 ± 21·8	cde	12·391 ± 0·822	c	3·861 ± 0·176	f
50 ppm N	HP	1·349 ± 0·122	fg	0·114 ± 0·008	ef	11·298 ± 1·129	bc	248·3 ± 27·2	de	16·145 ± 0·675	de	6·879 ± 0·379	g
100 ppm N	HP	1·521 ± 0·095	g	0·105 ± 0·006	e	12·178 ± 1·157	cd	319·8 ± 30·1	f	19·108 ± 0·914	g	7·988 ± 0·610	h
250 ppm N	HP	1·849 ± 0·126	h	0·093 ± 0·007	d	13·620 ± 1·012	de	433·2 ± 31·2	g	20·875 ± 1·246	h	8·742 ± 0·496	i
500 ppm N	HP	2·227 ± 0·142	i	0·083 ± 0·008	d	14·929 ± 0·996	e	584·3 ± 38·6	h	21·692 ± 1·152	h	9·151 ± 0·498	i
n		6		6		6		6		8		8

Low P (LP) plants were supplied with 0·5 mm P and high P (HP) plants were supplied with 1·6 mm P.

Values are means ± s.e.

Different letters indicate significant differences assessed by Tukey HSD test (P < 0·05) after performing three-way ANOVA with residual estimation.