N-Check

Fertiliser demand value

Requirement value according to fertiliser requirement calculation

kg/ha N

Number of samples

4 samples per 1 m2 of rapeseed fresh matter must be collected across the field. Sampling should be done at the end of vegetation in autumn, when the growth of the rapeseed plants and the nitrogen uptake are completed. For sampling, the plant mass must be dry and separated above the root neck. Please enter the values of the individual fresh matter samples in the fields below.

Nitrogen price

Please enter the value of your nitrogen costs per kg N

£/kg N

ø-weight of oilseed rape fresh matter

kg FM/m2

Addition/deduction N per hectare*

kg/ha

Corrected N fertiliser quantity

kg/ha

Additional costs/savings per hectare

£/ha

Amount of nitrogen absorbed by fresh matter

N kg/ha

Reductions in Kg/ha and savings in £/ha are shown with a negative sign.