 
| Step 1. N from dairy cows | |
|---|---|
| Nitrates band | |
| Average annual cow numbers | |
| Total N from dairy cows | {{B6}} | 
| Step 2. N from other stock | |||
|---|---|---|---|
| Number | N Excretion rate | Total N | |
| Average annual cattle more than 2 years of age | {{C10}} | {{D10}} | |
| Average annual cattle 1-2 year old | {{C11}} | {{D11}} | |
| Average annual cattle 0-1 year old | {{C12}} | {{D12}} | |
| Total N from other animals | {{D13}} | ||
| Total N produced on farm | {{B15}} | 
| Step 3. Land area | |
|---|---|
| Total eligible hectares as per BISS application | |
| N excretion rate per hectare (kg N/ha) | {{ B20 | number:(B20 % 1 === 0 ? 0 : 5) }} | 
| Excess N produced on holding above 220kg N/ha | {{B21}} | 
| Step 4. Assess options | |
|---|---|
| If N excretion rate is greater than 220kg N/ha then the farmer has three options; | |
| 1) Export this amount of slurry off their farm (gallons) | {{B25}} | 
| 2) Reduce cow numbers by this amount of cows | {{B26}} | 
| 3) Increase land area by this amount of hectares | {{B27}} | 
| 4) Or a combination of the above | |