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 | |
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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 | |
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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 |