Polyphosphate application influences morpho-physiological root traits involved in P acquisition and durum wheat growth performance

Table 2 Variation in shoot nutrient (N, P K; mg/total SDW/cylinder) contents of wheat under application of PolyPs and OrthoP at three P doses

P fertilizers	Doses (kg P/ha)	SDW	N	P	K
PolyC	30	9.8 ^ab	159.1 ^a−d	19.6 ^ab	180.4 ^abc
	60	11.2 ^a	204.2 ^ab	33.3 ^a	230.4 ^ab
	90	9.9 ^ab	244.3 ^a	32.7 ^a	205.3 ^abc
PolyB	30	10.8 ^a	220.1 ^ab	19.7 ^ab	221.4 ^ab
	60	10.2 ^ab	219.7 ^ab	26.8 ^a	235.3 ^ab
	90	11 ^a	258.2 ^a	32.3 ^a	261.2 ^a
PolyA	30	10.4 ^ab	200.0 ^ab	23.8 ^ab	200.8 ^abc
	60	10.5 ^ab	207.5 ^ab	26.9 ^a	220.8 ^ab
	90	9.5 ^ab	106.5 cd	17.7 ^ab	137.2 ^bc
OrthoP	30	10.8 ^a	169.0 ^abc	17.4 ^ab	196.8 ^abc
	60	10.8 ^a	128.1 ^bcd	27.1 ^a	206.4 ^abc
	90	8.3 ^ab	122.3 ^bcd	30.7 ^a	189.5 ^abc
P0		6.7 ^b	54.3 ^d	7.8 ^b	102.7 ^c

Means (n = 4) that do not share the same letters in the column differ significantly according to Tukey's test (p < 0.05). Asterisks indicate significant differences between P-fertilizers (P), P doses (D) and their interactions (P*D) (ns. not significant; *p < 0.05; **p < 0.01; ***p < 0.001)

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