budgeting in the Ythan NVZ
Project involved local people in protecting and enhancing the river
Ythan. As part of this, AERU developed a whole farm and field level
Nutrient Budgeting package for use on-farm. The objective was to
produce a computer software package, for use by farmers and their
advisers, that would determine the annual farm nutrient budget and
provide key information on crop nutrient requirements. The specific
aims were to:
calculate the whole farm nutrient (N, P, K) surplus or deficit via the
determination of the nutrient value of farm inputs minus the nutrient
value of farm outputs in order to demonstrate nutrient recovery
provide a readily accessible means of assessing nutrient requirements
for crops grown in the area on a field by field basis and the
appropriate period for their application. The system will show the
nutrient value of fertilisers and manures.
- To show
the nutrient surplus or deficit after application and post-harvest in
order to provide a baseline for the following year.
demonstrate to farmers the nutrient and financial value of manure and
to provide information on the most appropriate application timing
within the cropping cycle.
provide a means for farmers to provide evidence that the nutrient
policy of the farm is within the guidelines (set by SEERAD) for NVZs,
and that closed periods have been observed.
nutrient budgeting project was supported by the organisation behind the
Ythan Project and the European Union.
Dr Andy Green