ARCHIVE: Nitrate Vulnerable Zones (NVZs) - Guidance for Farmers. The N max limit (Leaflet 7 - PB12736g)

Step 4 Calculate the nitrogen supplied from all applications of manufactured nitrogen fertiliser to the crop type

Complete Table 3 for each field growing the crop type and receiving one or more applications of manufactured nitrogen fertiliser. 

Column 1

Enter each field name/reference growing the crop type. 

Column 2 Enter the cropped area of the field (ha).
Column 3 Enter the total rate of nitrogen (kg N/ha) from all applications of manufactured nitrogen fertiliser (e.g. for two applications, one at 40 kg N/ha and the other at 100 kg N/ha, the total rate is 140 kg N/ha).
Column 4 Multiply column 2 by column 3 to give the total amount of nitrogen from manufactured nitrogen fertiliser applied to each field. Add up the values in column 4 for all applications of manufactured nitrogen fertiliser made to the crop type across the farm and enter this number in box C at the bottom of the column.

Table 3 Nitrogen from applications of manufactured nitrogen fertiliser

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