Nutritional management and maize variety combination effectively control Striga asiatica in southern Africa

Table 1 Mean squares of biomass parameters of maize hybrids

Source of variation	DF^z	Chlorophyll	Leaf	Cob	Stem	Shoot	Root	Grain	Total	Root:shoot
Replication	2	166.56**	48.47*	718.1^ns	1528.3**	1899.30***	79.48^ns	539^ns	7457*	0.02009^ns
Replication/block	69	42.48*	27.26***	730.4**	627.1***	781.0***	45.67^ns	374.7*	3326**	0.18790***
Treatment	95	68.04***	83.22***	1362.6***	758.7***	1247.0***	71.27***	800.7***	9674***	0.28857***
Striga	1	1.21^ns	57.87*	904.3^ns	2.5^ns	84.5^ns	1590.40***	10.4^ns	15^ns	2.20695^ns
Variety	5	16.95^ns	160.69***	3535.4***	645.60*	1304.80***	39.74^ns	1978.8***	18,180.0***	0.07357***
P-level	7	446.35***	767.05***	9143.0***	6860.70^***	12,058.9***	554.2***	5397.7***	88,543***	1.35946^ns
Striga × variety	5	9.51^ns	27.34^ns	1408.0**	189.1^ns	304.6^ns	18.46^ns	965.9**	6762**	0.08118^ns
Striga × phosphorus	7	72.56*	44.74**	1207.9**	388.2^ns	508.8^ns	10.86^ns	841.3**	6443**	1.39376***
Variety × phosphorus	35	54.08**	16.75^ns	405.6^ns	236.3^ns	318.7^ns	12.66^ns	264.7^ns	1885^ns	0.07233^ns
Striga × variety × phosphorus	35	22.98^ns	18.28^ns	490.6^ns	254.00^ns	320.1^ns	14.01^ns	239.9^ns	1812^ns	0.07514^ns
Residual	121	28.8	14.06	453	236.6	264.4	34.85	258.7	1944	0.08507
Total	287	46.04	40.37	822.6	512.3	725.3	49.82	468	4873	0.08507
Coefficient of variation (%)		14.86	22.52	47.19	37.11	27.99	43.43	52.49	29.9	90.81

*, **, *** specifies significance at P ≤ 0.05, P ≤ 0.01 and P ≤ 0.001 respectively; ns shows insignificance at P > 0.05
^zDF denotes degrees of freedom

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