P kg∙ha⁻¹	N1 kg∙ha⁻¹	N2 kg∙ha⁻¹	N3 kg∙ha⁻¹	N4 kg∙ha⁻¹	Means
P1	69.0	113.3	109.3	120.3	91.2^a
P2	81.3	126.3	111.7	125.3	103.8^b
P3	84.7	104.3	137.7	116.7	94.5^a
Means	78.3^b	114.7^a	119.6^a	120.8^a
Control	Control vs. rest				79.7
Rest	Control vs. rest				108.3