Corn Grain NUTRIENT REMOVAL CHART

Corn Nutrient Removal - Grain Only (lbs)
Bushels/Acre	300	280	260	240	220	200	180	160	140	120	100	80
Nitrogen (N)	201	187.6	174.2	160.8	147.4	134	120.6	107.2	93.8	80.4	67	53.6
Phosphate (P2O5)	105	98	91	84	77	70	63	56	49	42	35	28
Potassium (K2O)	75	70	65	60	55	50	45	40	35	30	25	20
Sulfur (S)	24	22.4	20.8	19.2	17.6	16	14.4	12.8	11.2	9.6	8	6.4
Magnesium (Mg)	9.99	9.32	8.66	7.99	7.33	6.66	5.99	5.33	4.66	4.00	3.33	2.66
Calcium (Ca)	4.05	3.78	3.51	3.24	2.97	2.70	2.43	2.16	1.89	1.62	1.35	1.08
Copper (Cu)	0.15	0.14	0.13	0.12	0.11	0.10	0.09	0.08	0.07	0.06	0.05	0.04
Manganese (Mn)	0.21	0.20	0.18	0.17	0.15	0.14	0.13	0.11	0.10	0.08	0.07	0.06
Zinc (Zn)	0.33	0.31	0.29	0.26	0.24	0.22	0.20	0.18	0.15	0.13	0.11	0.09
Boron (B)	0.72	0.67	0.62	0.58	0.53	0.48	0.43	0.38	0.34	0.29	0.24	0.19
Iron (Fe)	0.45	0.42	0.39	0.36	0.33	0.30	0.27	0.24	0.21	0.18	0.15	0.12
*N, P, K and S numbers courtesy International Plant Nutrition Institute (IPNI). These numbers are estimations. Actual nutrient removal may vary based on many factors.

Corn Stover NUTRIENT REMOVAL CHART

Corn Nutrient Removal - Stover Only (lbs)
Bushels/Acre	300	280	260	240	220	200	180	160	140	120	100	80
Nitrogen (N)	135	126	117	108	99	90	81	72	63	54	45	36
Phosphate (P2O5)	48	44.8	41.6	38.4	35.2	32	28.8	25.6	22.4	19.2	16	12.8
Potassium (K2O)	330	308	286	264	242	220	198	176	154	132	110	88
Sulfur (S)	21	19.6	18.2	16.8	15.4	14	12.6	11.2	9.8	8.4	7	5.6
Magnesium (Mg)	60	56	52	48	44	40	36	32	28	24.0	20	16
Calcium (Ca)	39	36.4	33.8	31.2	28.6	26	23.4	20.8	18.2	15.6	13	10.4
Copper (Cu)	0.09	0.08	0.08	0.07	0.07	0.06	0.05	0.05	0.04	0.04	0.03	0.02
Manganese (Mn)	2.25	2.10	1.95	1.80	1.65	1.50	1.35	1.20	1.05	0.90	0.75	0.60
Zinc (Zn)	0.45	0.42	0.39	0.36	0.33	0.30	0.27	0.24	0.21	0.18	0.15	0.12
Boron (B)	0.09	0.08	0.08	0.07	0.07	0.06	0.05	0.05	0.04	0.04	0.03	0.02
Iron (Fe)	0.75	0.70	0.65	0.60	0.55	0.50	0.45	0.40	0.35	0.30	0.25	0.20
*N, P, K and S numbers courtesy International Plant Nutrition Institute (IPNI). These numbers are estimations. Actual nutrient removal may vary based on many factors.