Effect of Seed Distribution and Population on Maize (Zea mays L.) Grain Yield

Table 3

Analysis of variance for normalized difference vegetation index (NDVI) values, intercepted photosynthetically active radiation (IPAR), grain yield (Mg ha⁻¹), and N content (%) at Efaw, 2012.

Sources of variation		NDVI V4	NDVI V6	NDVI V8	IPAR	Grain yield (Mg ha^−1)	N content (%)
		Mean Square
Seeds per hill		0.0738^***	0.0151^ns	0.0600^***	0.0334^ns	11.46^***	0.0025^ns
Plant spacing		0.1225^***	0.0613^***	0.0756^***	0.0828^***	6.39^ns	0.0075^ns
Seeds per hill spacing		0.0034^**	0.0054^ns	0.0035^ns	0.0031^ns	12.58^***	0.0071^ns
Seeds per hill	Spacing	Treatment means
1	0.16	0.4200	0.5633	0.7567	0.6133	11.06	1.25
1	0.32	0.3100	0.6167	0.6000	0.4700	6.8	1.27
1	0.48	0.2600	0.4800	0.5100	0.4233	6.51	1.19
2	0.16	0.5700	0.6933	0.8100	0.6967	9.97	1.14
2	0.32	0.4100	0.6400	0.7533	0.4933	10.58	1.26
2	0.48	0.3333	0.4800	0.6400	0.5633	7.42	1.22
3	0.16	0.6667	0.7167	0.8467	0.7300	9.6	1.17
3	0.32	0.4900	0.6367	0.7833	0.5833	11.26	1.21
3	0.48	0.3733	0.5500	0.7133	0.5500	11.68	1.25
SED		0.02	0.05	0.03	0.09	1.27	0.06
C.V (%)		7	11	5.7	19	16.4	6.2

Significant at 0.01 and 0.05 levels of probability, respectively; ns: not significant; SED: standard error of the difference between two equally replicated means; C.V: coefficient of variation.