BROADCASTING - APPLICATION OF SOLID GRANULAR FERTILIZER
A good fertilizer spreader distributes the fertilizer accurately, evenly and in a uniformed manner across the field. They use centrifugal, pendulum or pneumatic spreading:
Centrifugal or pendulum spreading:
The fertiliser is broadcasted by a rotating disc or an oscillating tube.
The spreading device is a rail that is fed mechanically, and the granules are propelled pneumatically.
Centrifugal spreading is very common. The fertilizer granules drop out of a hopper onto a rotating disc, which has blades that throw the granules. The granules are then ejected at high speed and distributed at each side of the tramline. The following factors are important for even spreading:
- Correct fertilizer spreader adjustment
- Appropriate soil and weather conditions during spreading (low wind, dry and rut-free soil)
- Selecting fertilizers with appropriate physical characteristics