Amount of NPK (15:15:15) and SoA fertilizers applied (kg∙ha⁻¹)	N	Mean maize yield (kg∙ha⁻¹)	Std. Error	95% Confidence Interval for Mean		Minimum maize yield	Maximum maize yield
	N	Mean maize yield (kg∙ha⁻¹)	Std. Error	Lower Bound	Upper Bound	Minimum maize yield	Maximum maize yield
<375	49	2608	178.11	2249.42	2965.67	1024	6144
375 (Blanket)	23	2952	248.14	2437.18	3466.41	1024	5376
>375	17	3379	288.43	2767.74	3990.66	1152	6144
Total	89	2844	131.91	2581.76	3106.05	1024	6144
Levene’s test of variance (p < 0.05) $e t a^{2}$					0.90 0.06