Step 1. N from dairy cows
Nitrates band	80 92 106
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