Top placement

The outlet on the fertiliser boot is set to 100 % on top so that the seed is mixed directly into the upper layer of soil approx. 0 to 5 cm deep. The application point is right behind the tine leg. For fertilisation, this can be used in the spring when preparing the seedbed so that emission losses are avoided because the fertiliser is immediately covered.

Practical applications for top placement

Legumes can be planted as nitrogen collectors as an effective cover crop. It is also possible to sow coarse seed legumes with high seeding rates such as field beans.

Prior to drilling wheat, a starter fertiliser can be applied in the autumn with a uniform effect throughout the early development stages of the plant.

Mixed placement

With 50% applied on top and 50 % at the bottom, placement is both near the surface and at the tip of the chisel point. The fertiliser is distributed over the entire working depth, so this is ideally suited for phosphate compensation fertilisation. This method is also suitable for primary tillage in autumn with working depths from 15 cm.

Practical applications for mixed placement

The highest efficiency is achieved here during spring cultivation and is therefore well suited for maize. In this case, the fertiliser is used as a starter in the top layer of soil to help promote early development of the plant so the attraction effect of the deeper deposits draws the root down. As a result, the fertiliser accompanies the root for the whole working depth.

Bottom placement

The outlet on the fertiliser boot is set to 100% at the bottom of the coulter. This means that fertiliser can be placed further down at up to 35 cm deep. The soil is deeply loosened and fertiliser deposited at the same time. Preferably, stabilising nitrogen fertilisers should be used and emission losses are avoided.

Practical applications for bottom placement

During autumn tillage, fertiliser is deposited at a deep level where it remains inactive through the winter period. The mineralisation of stabilised nitrogen fertiliser starts at a soil temperature of about 8 degrees, which is ideal for sugar beet that develops roots at this deep level because they are attracted by the fertiliser and then tap into the soil moisture.