System comparison: phosphate fertilisation
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?
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)
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)
Am Gutshof 3
Tel. +49 3471 68484-11
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.
(Student projects are possible in each trial.)