HORSCH Intelligence
AutoForce

Permanently and automatically
adjust the coulter pressure
according to pre­set parameters

AutoForce

AUTOMATIC COULTER PRESSURE CONTROL FOR SINGLE GRAIN SEED DRILLS

AUTOMATIC COULTER PRESSURE CONTROL FOR SINGLE GRAIN SEED DRILLS

Since 2016 AutoForce has been available as an additional equipment.

Permanent and automatical adjustment of the coulter pressure

Due to the HORSCH coulter pressure control AutoForce the user can permanently and automatically adjust the coulter pressure according to pre­set parameters. Thus, soil differences and soil conditions are balanced automatically.

  • Stony soils require more coulter pressure to place the seed at a consistent depth. If the coulter pressure is too low the coulter body would not move smoothly and the seed would germinate irregularly and with different speed.
  • Lighter soils or more easily compacted soils require less coulter pressure to avoid a compaction of the soil. Too much coulter pressure compacts the soil and slows down the development of the roots although all seed was placed at the same depth.
  • There rarely are fields that are regular. The coulter pressure should be adjusted for every section of the field.
Distribution of the grains and the accuracy of the placement depth
  • When sowing row crops like maize, sunflowers, soybeans and sugar beet, the distribution of the grains in the row ensuring the accuracy of the placement depth is decisive for optimum yields. The keeping­up of the correct placement depth is on the one hand guaranteed by the arrangement of the depth control wheels directly beside the seed coulter and on the other hand it is stabilised by sufficient coulter pressure. The HORSCH Maestro single grain seed drills are able to work with a coulter pressure of a maximum 350 kg per row.
  • In practice there is often the question which coulter pressure would be the right one for the prevailing type of soil and the soil moisture. In most cases the farmer takes the most difficult type of soil in the field and adjusts the coulter pressure to exactly maintain the desired placement depth and to press the seed into the pre­consolidated seedbed in the most optimum way. As a consequence the coulter pressure in other soil areas of the same field is too high. The results are constraints on the early growth of the crop. The necessary sensor technology is located at the tandem connection of the depth control wheels and measures the weight­loading of the depth control rollers. Weight calculation is carried out by means of DMS sensor (strain gauge) technology and is fully integrated in the hardware and software of the HORSCH Maestro. The control system itself constantly acts on the hydraulic coulter pressure system of the HORSCH Maestro (standard equipment).
AutoForce excels due to its simple integration

AuoForce excels due to its simple integration into existing precision planters via the hydraulic coulter pressure system which is standard equipment for the HORSCH Maestro planter. More importantly, it is the only system on the market that is able to guarantee the coulter pressure over the whole working width by means of an hydraulic power transmission from the inside (seed waggon) to the outside wings; this is why an automatic coulter pressure control makes sense.

  • Maize seed unit with coulter pressure sensor
  • Coulter pressure sensor (detail)
  • Hydraulic cylinder for coulter pressure generation

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