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Nitrates Derogation Calculator
Instructions: Please fill in the yellow boxes
It is presumed that all parts of the country are operating at a limit of 220kg N/ha
Step 1. N from dairy cows
Nitrates band
Average annual cow numbers
Total N from dairy cows 0
Step 2. N from other stock
Number N Excretion rate Total N
Average annual cattle more than 2 years of age 65 0
Average annual cattle 1-2 year old 57 0
Average annual cattle 0-1 year old 24 0
Total N from other animals 0
Total N produced on farm 0
Step 3. Land area
Total eligible hectares as per BISS application
N excretion rate per hectare (kg N/ha) 0
Excess N produced on holding above 220kg N/ha 0
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) 0
2) Reduce cow numbers by this amount of cows 0
3) Increase land area by this amount of hectares 0.00
4) Or a combination of the above
The Irish Farmers Journal accepts no liability for losses or damages incurred as a result of using this spreadsheet.