| . | EXAMPLE |
YOUR FARM |
| 1. Crop to be grown. |
corn | __________ |
2. Clemson nutrient recommendation based on soil test.
a. N (lb/acre)
b. P2O5 (lb/acre)
c. K2O (lb/acre) |
120
50
50 |
__________
__________
__________ |
3. Nutrients applied preplant or at planting.
a. N (lb/acre)
b. P2O5 (lb/acre)
c. K2O (lb/acre) |
20
0
0 |
__________
__________
__________ |
4. Net nutrient needs of crop (lb/acre).
Nitrogen, phosphorus, and potassium: total need
(item 2a,2b,2c) minus additional nutrients from preplant
or at planting (item 3a,3b,3c)
a. N: 120-20 (lb/acre)
b. P2O5: 50-0 (lb/acre)
c. K2O: 50-0 (lb/acre) |
100
50
50 |
__________
__________
__________ |
5. Available nutrients in manure based on laboratory
analysis.
a. Available-N (lb/ton)
b. P2O5 (lb/ton)
c. K2O (lb/ton) |
40
60
40 |
__________
__________
__________ |
6. Application rate to supply priority nutrient.
a. Priority nutrient
b. Amount of priority nutrient needed
(lb/acre from 4a)
c. Rate of manure needed to supply priority nutrient (6b)
divided by (5a): 100/40(ton/acre) |
N
1002.5 |
__________
__________
__________ |
7. Pounds per acre of all nutrients supplied at the application
rate required to meet the needs for the priority nutrient:
for each nutrient enter the available nutrients (5a,5b,5c)
times manure rate (6c).
a. N supplied: 40 X 2.5 (lb/acre)
b. P2O5 supplied: 60 X 2.5 (lb/acre)
c. K2O supplied: 40 X 2.5 (lb/acre) |
100
150
100 |
__________
__________
__________ |
8. Nutrient balance: net nutrient need (-) or excess (+):
amount of nutrient applied by manure (7a,7b,7c) minus
net amount needed by crop (4a,4b,4c).
a. N balance: 100-100 (lb/acre)
b. P2O5 balance: 150-50 (lb/acre)
c. K2O balance: 100-50 (lb/acre) |
0
+100
+50 |
__________
__________
__________ |
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