2010
SP9599 : Top dressing winter wheat
taken 14 years ago, near to Wakerley, North Northamptonshire, England
Top dressing winter wheat
Ammonium nitrate fertiliser being applied to a winter wheat crop on the hill above Wakerley. The fertiliser is carried in tiny round ball called prills. The machine (spreader) is calibrated to deliver a set amount over a given width at a constant forward speed.
The
TF3239 : Four men and their dog went to calibrate their spreader shows how a spreader should be calibrated.
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