Product Information


Weeding with the AEROSTAR – Newsletter Part III

Continuing our series on the tined weeder, in the third part we will focus on the details of the trailed AEROSTAR versions with the big work widths. Furthermore, we will concentrate on to the weeding of row crops such as corn, sunflower, etc.


Already in the second part of our newsletter series, we looked at the technical details and the frame structure of our mounted tined weeders – i.e. the technical features of all AEROSTAR up to 15 m working width.

However, in the premier class of the tined weeders are the trailed versions with 18 and 24 m working width. Enormous efficiency, high productivity and high performance are hallmarks for our trailed tined weeders and they are therefore the right alternative for large- and medium-sized farms.
For many years in the program, last year we reworked the construction to simplify the adjustment in the field and the folding between to / from transport position. The modifications have succeeded excellently and after a preproduction series in 2011 in this year all machines will be produced with the new system.
The main different compared to the mounted AEROSTAR is the suspension of the weeder sections. On the trailed machines the sections are mounted on hydraulically controlled parallelograms, which allow you to adjust the pressure on them while working. In addition also the correct position of the sections for folding is adjusted via the parallelograms. Furthermore, in the reworked version the chassis is fixed and not hydraulically height adjustable anymore – this simplifies the setting in the field. Nevertheless, the most important improvement is the new folding to / from transport position; now the wings are automatical ridged after folding for the road position and thus ensures that the transport width of 2.7 m is maintained accurately.
Due to the new construction only three double-acting hydraulic connections (one out of them with floating position) are required to fold and adjust the machine

Weeding of corn / sunflower:
Blind weeding achieves a very positive effect on the crops; however, a bit deeper seed placement is important (4 – 5 cm). At a plant height of approximately 7 - 18 cm a use for weed control, breaking crusts is particularly effective. Especially at higher crops we recommend the use of longer tines (600 mm).
A use of the tined weeder during and after stem elongation (after formation of the first stem node) is not recommended! In the later stages, we recommend the use of row-crop cultivators (Einböck CHOPSTAR) - this gives you the best effect with respect to weed control, soil aeration, etc.

Weeding of soya:
Soya is a relatively sensitive crop, as regards weeding. It is only recommended if soya is grown organically and as a row crop. For organic farmers a combination row-crop hoe (with finger-hoe disks) and weeder is, however, almost the only machine combination in order not to lose the control of the weeds!It is important to find the best time and the proper adjustment of the tined weeder (tine position / position of the upper link) and the right working speed.

1. Operation: Blind weeding approx. three days after sowing (approx. 4 – 5 cm sowing depth)
2. Operation: Hoeing (Einböck CHOPSTAR) as soon as the rows are visible
3. Operation: Seed leaf stadium (approx. 5 days after hoeing); with an aggressive tine position, but with little pressure from the upper link and an adapted forward speed. For this operation a hydraulic tine adjustment is an advantage..
4. Operation: Hoeing at a plant height of about 10 cm, ideally in combination with the Einböck finger-hoe disks)
5. Operation: Weeding, about three days after hoeing; this helps to control the weeds in the row that has been weakened by the previous cultivation
6. Operation: Hoeing when the soya plant is about 20 – 25 cm high
7. Operation: Either combined with the 6th operation or immediately afterwards; weeding for levelling the surface so that the cutterbar of the combine harvester can be adjust correspondingly low.

The above listed operations are, of course, the ideal way to maximize the success of weed control, but in practice, under good conditions, a good success can also be achieved with fewer processing steps.

Row crops in general:
If cultivation in rows of very small and weak plants is necessary, it is possible to use a tine activation system. With this system the tines, which are mounted in the row, can be lifted and so they are inactive. Thus, at least between the rows weeds can be controlled and / or crusts can be broken, even if otherwise a use of the tined weeder would harm the crops.

We note that the above information is based on experience and in different conditions and situations different results can be achieved. The company Einböck assumes no liability for the accuracy of the information and any damages to equipment / crops.

einboeck-prod-aerostar-reihe3-II 12 m weeder used for mais

einboeck-prod-aerostar-reihe3-III Combined use of weeder / cultivator for soya

einboeck-prod-aerostar-reihe3-IV parallelogramme on whicht weeder sections are mounted

einboeck-prod-aerostar-reihe3-V 12 m weeder used for sunflower

einboeck-prod-aerostar-reihe3-VI interlocking system for transport position