Aboveground dry matter accumulation, grain yield and N accumulated at physiological maturity affected by row spacing, available water and N rate during two growing seasons.

Table 2: Aboveground dry matter accumulation, grain yield and N accumulated at physiological maturity affected by row spacing, available water and N rate during two growing seasons.

Treatment				Season 1				Season 2
				Dry matter	Dry matter N	Grain yield	Grain N	Dry matter	Dry matter N	Grain yield	Grain N
				--------------------------------------------------Kg ha^-1---------------------------------------------
Irrigation		70	180	20119	141	9739	92.1	17301	136	10553	95.5
			0	11645	80	5426	46.3	9898	56	5017	37.1
		35	180	19079	131	9848	84.7	17539	133	10300	96.2
			0	12438	96	6450	64.5	10471	64	6370	44
Rainfed		70	180	17611	137	9254	88.5	15331	141	8738	96.6
			0	8671	68	4126	41.5	8029	51	3972	29.3
		35	180	18625	138	11018	87.5	16911	157	10035	107.9
			0	9582	69	5797	48.8	8208	53	4762	32.2
Av. Irrigation	Irrigation Rainfed			15825	112	7866	71.9	13802	100	8060	68.2
Av. Irrigation	Irrigation Rainfed			13622	103	7549	66.6	12120	97	6877	66.5
Av. N rate (kg ha^-1)			180	18858	137	9965	88.2	16770	142	9906	99.1
Av. N rate (kg ha^-1)			0	10584	78	5450	50.3	9151	56	5030	35.6
Av. Row spacing (cm)			70	14512	106	7136	67.1	12630	96	7070	64.6
Av. Row spacing (cm)			35	14931	109	8278	71.4	13282	102	7867	70.1
Analysis of variance
Irrigation (I)				^§	ns	ns	ns	^*	ns	^*	ns
Nitrogen (N)				^**	^**	^**	^**	^**	^**	^**	^**
Row spacing (R)				ns	ns	^**	^§	ns	ns	^*	^§
I^*N				^*	^*	^*	^*	ns	^**	ns	^**
I^*R				ns	ns	ns	ns	ns	ns	ns	ns
N^*R				ns	^§	ns	^§	ns	ns	ns	^§
I^N^R				ns	ns	ns	ns	ns	^§	^§	^§
CV (%)				4.8	8.1	9.3	7.6	7.6	6.9	8.6	6.9

‡; *; **. Significant at the 10. 5 y 1% de probability levels respectively.