Table 1.

Analysis of variance (F and P values) of seed protein, oil, fatty acids (g kg^–1) in soybean as influenced by year (Y), seeding rate (SR), planting date (PD), and row-type (RT, single- or twin-row) in Sharkey clay soil in 2009 and 2010 at Stoneville, MS, USA.

		Protein		Oil		Palmitic		Stearic		Oleic		Linoleic		Linolenic
Effect	DF	F	P	F	P	F	P	F	P	F	P	F	P	F	P
Y	1	5.9	*	96	***	275	***	0.34	NS	1130	***	759	***	53	***
PD	2	194	***	511	***	10.5	***	7.04	**	72	***	7.89	***	65	***
Y × PD	2	23.0	***	119	***	17.3	***	4.7	*	87	***	42.3	***	27	***
RT	1	36.3	***	7.8	**	0.1	NS	4.56	*	10.2	***	0.05	NS	0.64	NS
Y × RT	1	23.3	***	6.4	*	0.57	NS	3.18	NS	16.1	***	0.13	NS	3.7	NS
PD × RT	2	1.3	NS	5.6	**	0.75	NS	0.26	NS	10.6	***	0.3	NS	1.6	NS
Y × PD × RT	2	13.6	***	7.6	***	0.65	NS	0.08	NS	3.1	*	0.61	NS	2.7	NS
SR	3	6.4	***	4.1	**	0.55	NS	0.87	NS	2.2	NS	2.05	*	1.3	NS
Y × SR	3	1.7	NS	0.69	NS	1.4	NS	0.48	NS	1.4	NS	0.07	NS	2.4	NS
PD × SR	6	3.1	**	1.9	NS	0.63	NS	0.96	NS	2.4	*	3.8	**	1.4	NS
Y × PD × SR	6	1.9	NS	3.5	NS	0.70	NS	0.75	NS	3.6	**	1.2	NS	2.2	*
R × SR	3	1.5	NS	0.88	NS	3.8	NS	1.8	NS	2.6	NS	1.0	NS	0.69	NS
Y × RT × SR	3	0.26	NS	0.69	NS	1.8	NS	0.98	NS	1.6	NS	0.9	NS	0.61	NS
PD × RT × SR	6	2.3	*	0.82	NS	0.85	NS	0.65	NS	3.6	**	1.8	NS	3.1	**
Y × PD × RT × SR	6	2.2	*	1.0	NS	1.2	NS	1.0	NS	1.3	NS	1.3	NS	1.9	NS
Residual		35.8		21		41.3		1.4		109		90		32.1

*P ≤ 0.05; **P ≤ 0.01; ***P ≤ 0.001; NS, not significant.