Table: Fertilizers for Corn

Fertilizers for corn ^1,2,3
		Fertilizer Nutrients to be Added (lb./A)⁴
		NITROGEN (N)^5,6,7						PHOSPHOROUS (P₂O₅)					POTASSIUM (K₂O)
		Type of Plowed Sod						Soil test phosphorous levels⁸					Soil test potassium levels⁸
		Grass		Less than 50% Legume		Greater than 50% Legume
Soil Group	Years Following Sod	No Manure	Manure	No Manure	Manure	No Manure	Manure	VL⁹	L⁹	M⁹	H⁹	VH⁹	VL⁹	L⁹	M⁹	H⁹	VH⁹
Soil group I–Clayey soils, fine-textured soils in northern New York, near lakes and along the Hudson River. Examples: Vergennes, Kingsbury, Hudson, Rhinebeck, Schoharie, Odessa.	1	10-30	10-30	10-30	10-30	10-30	10-30	70	60	40	20	0	50	40	30	20	0
	2	50-100	10-40	30-80	10-20	20-70	10-30
	3	70-110	10-50	60-100	10-40	60-100	10-40
	4 or more	80-120	20-60	80-120	20-60	80-120	20-60
Soil group II–Silty soils, medium- to moderately fine-textured soils of the central region. Examples: Cazenovia, Hilton, Honeoye, Lima, Ontario, Lansing, Mohawk, Chagrin, Teel.	1	10-30	10-30	10-30	10-30	10-30	10-30	70	60	40	20	0	60	60	40	20	0
	2	60-100	10-40	50-90	10-30	40-80	10-30
	3	80-120	10-60	70-110	10-50	70-110	10-40
	4 or more	90-130	30-70	90-130	30-70	90-130	30-70
Soil group III–Silt loam soils, moderately coarse-textured acid soils of the Southern Tier, glacial outwash. Examples: Barbour, Chenango, Palmyra, Tioga, Mardin, Langford, Tunkhannock.	1	10-30	10-30	10-30	10-30	10-30	10-30	70	60	40	20	0	80	70	50	25	0
	2	60-100	10-40	40-90	10-30	30-80	10-30
	3	80-120	20-60	70-110	10-50	70-110	10-50
	4 or more	90-130	30-70	90-130	30-70	90-130	30-70
Soil group IV–Loamy soils, coarse- to medium-textured soils of northern NY and the Hudson Valley. Examples: Bombay, Broadalbin, Copake, Empeyville, Madrid, Sodus, Worth.	1	10-30	10-30	10-30	10-30	10-30	10-30	70	60	40	20	0	120	80	50	25	0
	2	60-110	10-50	50-90	10-30	40-90	10-30
	3	80-120	10-60	70-120	10-60	70-110	10-50
	4 or more	90-130	30-70	90-130	30-70	90-130	30-70
Soil group V–Sandy soils, very coarse-textured soils on beach ridges, deltas, and sandy or gravelly outwash near mountains and the Hudson Valley. Examples: Alton, Colton, Windsor, Colonie, Elmwood, Junius, Suncook.	1	10-30	10-30	10-30	10-30	10-30	10-30	70	60	40	20	0	120	90	60	30	0
	2	40-100	10-40	20-80	10-20	20-70	10-30
	3	60-110	10-50	50-100	10-40	50-100	10-40
	4 or more	70-120	20-60	70-120	10-60	70-120	10-60
¹ A more specific guideline will be obtained from a complete Cornell Morgan soil test analysis.
² For sorghum, sudan-sorghum hybrids, and millets, use 2/3 to 3/4 of the nitrogen rate in the table. Nitrogen may be applied preplant or as a postemergence application if planted after June 1.
³The nitrogen guidelines are based on a broad range of soils. A more accurate guideline for a specific soil, see Nitrogen Guidelines for Field Crops in New York nmsp.cals.cornell.edu/guidelines/ nutrientguide.html.
⁴To avoid salt damage, do not use more than 80–100 lb./A of N + K₂O in the fertilizer band at planting.
⁵ For nitrogen guidelines greater than 50 lb./A, apply a lower rate in the starter fertilizer (such as 10–30 lb. in the band at planting), and sidedress the remaining nitrogen when the corn is 6–15 in. high.
⁶Use the lower nitrogen rate for soils with a low yield potential. The optimum economic N rate for corn after soybean can be lowered by 20-30 lbs N/acre. This adjustment should be applied only for the first year of corn following soybean
⁷For a more accurate estimate of the nitrogen contribution from manure (required for New York State CAFO permits), see Nitrogen Guidelines for Field Crops in New York nmsp.cals.cornell.edu/guidelines/nutrientguide.html
⁸ See Table 2.10.1 for the soil test values within each level.
⁹VL = very low; L = low; M = medium; H = high; VH = very high