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Crop Fertilization Based on North Carolina Soil Tests
Table 4.4 Equivalent fertilizer rates *
Area Rates   Volume Rates
lb/1000 ft²
 
lb/100 ft²
 
lb/acre   lb/yd³
 
oz/yd³
10
=
1.0
=
436
 
0.42
=
6.67
15
=
1.5
=
653
0.63
=
10.10
20
=
2.0
=
871
0.83
=
13.28
25
=
2.5
=
1089
1.04
=
16.64
30
=
3.0
=
1307
1.25
=
20.00
35
=
3.5
=
1525
1.46
=
23.36
40
=
4.0
=
1742
1.67
=
26.72
45
=
4.5
=
1960
1.88
=
30.08
50
=
5.0
=
2178
2.08
=
33.28
55
=
5.5
=
2396
2.29
=
36.64
60
=
6.0
=
2614
2.50
=
40.00
65
=
6.5
=
2831
2.71
=
43.36
70
=
7.0
=
3049
2.92
=
46.72
75
=
7.5
=
3267
3.13
=
50.08
80
=
8.0
=
3485
3.33
=
53.28
85
=
8.5
=
3703
3.54
=
56.64
90
=
9.0
=
3920
3.75
=
60.00
95
=
9.5
=
4138
3.96
=
63.36
100
=
10.0
=
4356
4.17
=
66.72
120
=
12.0
=
5227
5.00
=
80.00
140
=
14.0
=
6098
5.83
=
93.28
160
=
16.0
=
6970
6.67
=
106.72
180
=
18.0
=
7841
7.50
=
120.00
200
=
20.0
=
8712
8.33
=
133.28

* 1 acre = 43,560 ft²;   1 yd³ = 27 ft³;   lb/yd³ = (lb/1000 ft²)/24;    (lb/1000 ft²) 43.56 = lb/acre;  
   1 lb = 16 oz.

return icon.Hardy DH, Tucker MR, Stokes CE. 2014. Crop fertilization based on North Carolina soil tests. Raleigh (NC): North Carolina Department of Agriculture and Consumer Services, Agronomic Division. Circular No. 1.

Last Update January 10, 2014

 

NCDA&CS Agronomic Services Division, Colleen M. Hudak-Wise, Ph.D., Director
Mailing Address: 1040 Mail Service Center, Raleigh NC 27699-1040
Physical Address: 4300 Reedy Creek Road, Raleigh NC 27607-6465
Phone: (919) 733-2655; FAX: (919) 733-2837



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