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FiBL project

Title Optimal use of recycled fertiliser in organic farming: impact on yields and nitrogen efficiency
Title Original Optimaler Einsatz von Recyclingdüngern im Biolandbau: Ertragswirkung und Stickstoffeffizienz
Official Acronym Recycle4Bio
FiBL project number 10107

The production and use of recycled fertiliser from biogas plants are increasing. However, a lot of questions remain unanswered concerning the fertilisers’ medium-term effects on yields, nitrogen efficiency and losses as well as on soil quality.

In this project, an exact trial over several years testing various recycled fertilisers with and without biochar is created to answer the following questions:

  • Can the use of recycled fertilizer help reduce the yield gap in organic farming without affecting soil quality, product quality and the environment?
  • Can the nitrogen efficiency on organic farms be sustainably improved by using recycled fertilisers, especially fermentation products?
  • Can nitrogen losses be reduced by adding biochar without risking any negative effects on soil quality and the environment?
Project status ongoing
Start of project 01.05.2017
End of project 31.07.2021
Financing/ Donor
  • Federal Office for Agriculture (FOAG) – Research, training and innovation
(Research) Programme
  • Federal Office for Agriculture (FOAG) – Research, training and innovation
Project partners
  • Agroscope: Dr Jochen Mayer, Division Agroecology and Environment, Reckenholzstrasse, 8046 Zurich
FiBL project leader/ contact
FiBL project staff
Role of FiBL

Project leader

Research area
Date modified 24.05.2019
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