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System comparison: phosphate fertilisation

Objective

The objective of this project is to investigate the effects of the fertiliser level and the manner in which mineral fertilisers containing phosphate are applied using minimal soil tillage on various agricultural crops over a number of years.

Clarification of the following questions:

  • Is the 'Fertilisation from A/B to C' strategy still justified?
  • Can the efficiency of P fertilisation on P-impoverished soil be increased by precisely placing the fertiliser, thus reducing the amount of fertiliser needed for the optimum yield?
  • What influence does precision fertilisation have on root formation and soil fertility?

Experimental set-up

Field: Holstein, 28 plots consisting of seven variants with four repetitions

Trial duration: since 2014

Crop rotation since the start of the trial: sugar beet, emmer wheat, peas, winter wheat, winter rapeseed, spelt, winter barley (for the 2021 harvest)

Variants

1b – unfertilised, shallow soil tillage

1p – unfertilised, deep loosening

2b – fertilised according to the guideline value with TSP, shallow loosening

2p – fertilised according to the guideline value with TSP, precision fertilisation with deep loosening

3b – fertilised with TSP according to calculated removal, shallow loosening

3p – fertilised with TSP according to calculated removal, precision fertilisation with deep loosening

4p - fertilised with DAP according to calculated removal, precision fertilisation with deep loosening (for crops that do not permit fertilisation with fertiliser containing N in the autumn, TSP is applied using contact fertilisation along with the seed to balance the degree of removal)

Contact

Internationales DLG-Pflanzenbauzentrum
Am Gutshof 3
06406 Bernburg-Strenzfeld
Tel. +49 3471 68484-12
Fax +49 3471 68484-29
Send us an email

Are you interested in our field trials?

Please send us an email and we will forward the results of the field trials to you.