Table 1.

Grain weight per plant (brown rice), total Zn concentrations in the polished (white) rice and ⁷⁰Zn (% of total Zn) observed for three treatments imposed on two cultivars (cv) (Experiment 2).

Cultivar	Zn treatments		Grain weight (g (plant−1)	Zinc in polished rice (mg kg−1)	70Zn in polished rice (%)
Qinai-3-hun	11		1.48	14.9	30.1
	22		2.10	51.3	42.0
	33		2.29	52.9	44.8
90B290	11		1.35	14.8	29.6
	22		1.19	38.7	50.3
	33		1.63	48.7	55.2
P	Cv		0.005	ns	0.03
	Zn	1 vs. 2 and 3	0.02	<0.001	<0.001
		2 vs. 3	ns	ns	ns
	Int	Cv × 1 vs. 2 and 3	0.048	ns	ns
		Cv × 2 vs. 3	ns	ns	ns
SED	Cv		–	3.04	2.11
	Zn		–	3.73	2.58
	Int		0.41	–	–

¹0.05 mg Zn L⁻¹ nutrient solution;

²3.00 mg Zn L⁻¹ during first 28 days after transplanting followed by 1.00 mg L⁻¹ until harvest;

³3.00 mg Zn L⁻¹ during first 28 days after transplanting followed by 2.00 mg L⁻¹ until harvest.