A packer is a trailing device that can be used behind a plow . When plowing, it is pulled over the freshly plowed clods so that the coarsely loosened soil is finely clumped and somewhat compacted so that a seedbed suitable for sowing is created and the soil ture (aeration and aeration) and the capillarity of the soil are promoted.
Packers usually consist of narrow metal disks with a diameter of 60 to 100 centimeters, which are rotatably mounted on a transverse shaft. Due to their high weight of up to 600 kilograms per meter of working width, packers penetrate deep into the ground.
Instead of metal discs, rubber tires can also be used for light soils and shallower working depths.
When plowing, the packer is unhitched at the headland and left standing as standard. After turning the plow and driving into the plow furrow, the packer is caught and locked with the help of a catch arm protruding about 1.5 meters from the side. Packers permanently attached to the plow ( integrated packers ) are not very common .
Special form front packer
- When sowing , a packer running in front of the tractor is also used to consolidate the seedbed. This is especially necessary if no packer was used for plowing. At the same time, the front packer then serves as a counterweight to the heavy seed drill / power harrow combination.
- Front swivel packers are used for plowing and swiveled around at every headland. They run alternately to the left or right of the tractor so that the freshly plowed soil is consolidated. The advantage is that you don't need to catch the packer at the headland.
- Hans Hermann u. a. (Written): Basic level in agriculture, Volume 1. BLV Verlagsgesellschaft mbH, Munich 1992 ISBN 3-405-14385-3