Summary of the effect of fertilizer-phosphorus (P) source on total aboveground tissue properties (aboveground vegetative plus grain) for rice grown in a P-deficient, silt-loam soil under flood-irrigated conditions in the greenhouse. Least square means are reported, with n = 4 observations for MAP and RP, but n = 3 observations for DAP, ECST, TSP, and the UC and n = 2 observations for CPST due to missing data from one dead plant and grain masses that were too low for any chemical analyses.

Table 6: Summary of the effect of fertilizer-phosphorus (P) source on total aboveground tissue properties (aboveground vegetative plus grain) for rice grown in a P-deficient, silt-loam soil under flood-irrigated conditions in the greenhouse. Least square means are reported, with n = 4 observations for MAP and RP, but n = 3 observations for DAP, ECST, TSP, and the UC and n = 2 observations for CPST due to missing data from one dead plant and grain masses that were too low for any chemical analyses.

Plant Property^†	P-value	Fertilizer-P Source^†							Overall mean
Plant Property^†	P-value	ECST	CPST	MAP	DAP	TSP	RP	UC	Overall mean
Total aboveground DM (kg m^-2)	0.22	3.4	3.2	3.7	3.1	4.0	3.2	3.1	3.4
Total aboveground DM uptake
N (g m^-2)	< 0.01	61.0 ab^‡	48.2 cde	55.8 bc	68.4 a	54.7 bcd	47.8 de	44.7 e	-
P (g m^-2)	0.22	6.8	6.4	7.0	6.3	7.9	5.6	5.8	6.5
K (g m^-2)	0.42	16.1	16.3	14.6	13.8	18.0	16.4	16.2	15.9
Mg (g m^-2)	0.67	10.2	10.6	11.9	9.9	10.7	10.8	9.1	10.5
Ca (g m^-2)	0.36	10.5	12.4	14.8	14.4	13.7	14.2	9.9	12.8
Fe (g m^-2)	0.04	0.40 b	0.41 b	0.65 a	0.49 ab	0.51 ab	0.48 ab	0.37 b	-
Mn (g m^-2)	0.37	4.2	4.8	5.6	4.9	5.7	5.3	3.5	4.9
Zn (g m^-2)	0.03	0.15 ab	0.14 ab	0.17 a	0.12 b	0.19 a	0.13 b	0.13 b	-

^†Dry matter (DM), electrochemically precipitated struvite (ECST), chemically precipitated struvite (CPST), monoammonium phosphate (MAP), diammonium phosphate (DAP), triple superphosphate (TSP), rock phosphate (RP), and unamended control (UC); ^‡Means in a row followed by different letters are different at P ≤ 0.05.