Table 4.

δ¹⁸O_P of trichloroacetic acid-soluble reactive P (TCA P) of the four different parts (roots, stems, old and new leaves) of the plants for the three different treatments (control, + P and − P)

	δ18OP (‰)
	Roots	Stems	Old leaves	New leaves
Treatments
Control	12.0a, A	14.9a, B	29.8a, C	25.9a, D
+ P	11.5a, A	13.5a, B	27.4b, C	25.7a, D
− P	12.0a, A	13.9a, B	23.8c, C	24.2b, C
Pooled SD	0.7	1.1	0.9	0.7
Source of variation (p value)
Treatment	ns	ns	< 0.001	0.02

Values are means with n = 3 for the control and n = 4 for the + P and − P plants. Small letters indicate significant differences between treatments within the same plant part; capital letters indicate significant differences between plant parts within the same treatment (Tukey’s HSD; α = 0.05). Pooled standard deviation (pooled SD)

ns not significant