TABLE 3.

Root dry weight (RDW; mg cm⁻³), as affected by levels of maize treatment (T), N‐fertilization (N), distance from the row (D), and interaction T × D

Source of variation	Maize treatment (T)	N‐fertilization (N)	Distance from the row (D) (cm)	RDW (mg cm−3)
Maize treatment (T)	T1			0.67	b
	T2			0.56	b
	T3			1.00	a
N‐fertilization (N)		70% N‐fertilization		0.64	b
		100% N‐fertilization		0.85	a
Distance from the row (D)			0	1.38	a
			37.5	0.10	b
T × D	T1		0	1.22	b
	T2		0	1.03	b
	T3		0	1.90	a
	T1		37.5	0.11	a
	T2		37.5	0.09	a
	T3		37.5	0.11	a

Note: Different letters indicate statistically significant differences between means within the same source of variation. Letters in T × D indicate differences between T levels, within the same D level.