Maestro TX

• Hydraulic coulter pressure up to 350 kg
• Various front tools
• Closing wheel options for all soils
• Durable and low-wear design

The Maestro row units mainly excel due to a long service life and a very stable design. With 35 cm the parallelogram is very wide so that especially laterally acting forces can be absorbed better. The maintenance-free bushes in the parallelogram are very large to guarantee a long service life. The row units can move by just under 40 cm to compensate for unevenness in the field. They are either clamped to the frame of the Maestros with a clamping device or for larger machine models are fixed. The coulter pressure is generated in the parallelogram of the row unit with a hydraulic cylinder. Coulter pressures up to 350 kg per row can be selected. The empty weight of the machine is used and transferred to the row unit.

The basic body of the row unit is heavy duty. The depth control system is equipped with large wear points to avoid having to comprise. The seed discs of the double disc coulter are equipped with reliable 2-row angular ball bearings. Depth control is carried out via a pin and 14 available positions. You can sow at depth from 1.5 to 9 cm. A catching roller to catch and press the grains is mounted as standard. The seed furrow is closed and consolidated by a V-shaped pair of closing wheels. Different front tools can be attached in front of the disc blade at a standardised flange plate, e.g trash wells or a cutting disc.

• Can be used universally for different crops
• Utmost precision for seeding speeds up to 15 km/h
• Easy handling: no adjustment of the singulator required
• Reliable singulation of different grain sizes
• Electric drive as a basis for: SectionControl, VariableRate, tramline control

The AirSpeed metering unit can be used for an precise grain singulation in all situations. Due to different metering discs, maize, sunflowers, sugar beet, soybeans and rape can be singulated reliably.
The AirSpeed system is based on the principle of overpressure singulation where the seed is pressed to a perforated disc. During the metering process, the grains pass through a scraper that sees to it that doubles are removed. The special feature of the AirSpeed scraper is that no adjustment is required. The contour of the scraper has been optimised in such a way that a reliable singulation for all crops is ensured.
The seed is shot actively with overpressure from the metering unit via the shoot pipe into the seed furrow. A grain sensor is integrated into the drop tube to ensure an optimum monitoring of the seeding success. The measuring technology of the sensor is able to count the grains, to determine the spacings between the grains and thus to transmit an information to the driver with regard to double spots or gaps.
The transferred values of the singulation accuracy are clearly displayed at the terminal of the machine and additionally increase safety for sowing.
The AirSpeed metering device is driven electrically as standard and each row can be controlled individually. This technology allows for the well-known functions individual row switch-off, SectionControl, VariableRate and tramline control.
For VariableRate, the Airspeed system is designed in such a way that the seed rate can be modified for every individual row. With the tramline control, a percentage increase of the seed rate in the row at the left and the right side of the tramline can be carried out individually. With these advanced functions all measures to increase precision while sowing can be used to full capacity.

• 1 300 l capacity
• Two well-proven HORSCH fertiliser metering units
• Thus, standard half-width shut-off

For a targeted application of underground fertiliser, a 1 300 l fertiliser hopper is available for the Maestro TX. Two HORSCH metering devices carry out a half-width shut-off as standard. With the Maestro 6 TX, three rows per side are supplied directly. With the Maestro 7 TX, one side supplies four rows. At a speed of 12 km/h, 250 kg per hectare can be applied.

Which press wheel is suitable for which application?

Rubber and profiled press wheel

• Rubber closing wheels for light sandy conditions
• The profiled wheels are recommended for fine seeds.
• The profile additionally creates fine earth and can better prevent silting.

Finger and spike press wheel:

• The finger press wheel is ideal for heavy and medium soils
• Spike press wheel for medium to light sites
• There is one finger / spike wheel and one standard wheel per row to control the depth and to avoid moving the grains.
• However, the wheels are not suitable for shallow sowing.
• If the furrow wall gets compacted because of the DoubleDisc seed coulters, it is broken by the finger / spike wheel – the furrow is removed.
• Seed furrow is not opened after sowing under dry conditions, especially on heavy clayey sites
• Development of the maize root is encouraged

The closing of the seed furrow is the last time when you can influence emergence. Depending on the type of soil, the sowing method, sowing depth and the crop, the requirements differ. Therefore, the Maestros can be equipped with different press wheels and press wheel combinations to be able to achieve an optimum work result for all crops in all conditions.

What do you need an automatic coulter pressure control for?

• 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.
• Light conditions or pressure-sensitive soils need less coulter pressure so that the soil is not compacted. 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 completely even. The coulter pressure has to be adapted to each section of the field.
• This is why AutoForce has been available for the Maestro line since 2016.

AutoForce guarantees an always consistent embedding of the grains in changing conditions. Thus, more regular emergence and populations are achieved. The contact pressure of the row unit is measured with a sensor at the two support wheels. This pressure (= nominal value) is previously set in the terminal. You can choose between three pressure levels: 25 kg – 50 kg and 80 kg (the values can also be adapted individually). With changing soil conditions, the row needs more or less power to be able to keep up the set placement depth. The contact pressure would change. The sensor detects this, and the system regulates the contact pressure in such a way that it always corresponds to the nominal value that has been set. This is possible due to the design of the machine which allows for transferring weight to the seed bar. The coulter pressure automatically varies between 150 kg and 350 kg. Thus, the grain is always embedded at the same level. A too shallow placement as well as soil compaction can thus be avoided.

Standard press wheel holder (standard equipment):

• Pressure adjustment in four steps (from 8 to 55 kg)
• Adjustment of the wheel spacing with spacers
• Wheels can be placed in an offset position for a high clearance

Press wheel holder with angle adjustment (option):

• Same adjustment options as for the standard holder
• In addition: six steps for the angle adjustment
• Forming of a ridge as the wheels earth up more soil
• Recommended for fine seeds (sugar beet, rape)

The closing of the seed furrow is the last time when you can influence emergence. Depending on the type of soil, the sowing method, sowing depth and the crop, the requirements differ. Therefore, the Maestros can be equipped with different press wheel holders and press wheel combinations to be able to achieve an optimum work result for all crops in all conditions.

• The SingleDisc fertiliser coulter is suspended independently of the seed row
• The placement depth can be set to 5 to 9 cm
• Quick adaption of the coulter pressure without tools from 40 to 140 kg
• Deactivation is possible without tools by lifting the unit out of work

In addition to a precise placement of the grains the exact positioning of fertilisers or plant protection agents is very important for single grain sowing. The rows of the Maestros, thus, can be equipped with different components to provide an optimum solution for all requirements and demands.