Table 6.

Effect sizes (ω²) of space components on crop yield changes during 2003–2017 national summer maize trials.

Maturity span, d	Canopy volume	Yield per unit volume	Maturity span, d	Canopy volume	Yield per unit volume
1	0.55	0.98	9	0.36	1.00
2	0.53	0.98	10	0.37	1.00
3	0.50	0.99	11	0.36	0.96
4	0.47	0.99	12	0.34	0.97
5	0.44	0.99	13	0.29	0.93
6	0.42	0.99	14	0.51	0.89
7	0.44	0.98	15	0.34	0.85
8	0.39	0.99