Use of digestate and cattle slurry as alternative sources for crop fertilisation :  effects on ryegrass production.

Monteiro, M.C.H.; Carneiro, J.P.; Batista, Marta; Dias, Isabel; Veloso, Abel

http://hdl.handle.net/10400.11/6769

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Abstract(s)

This work aims to compare the effects of slurry, digestate and a mineral fertiliser on the yield of Lolium sp. A pot trial was conducted in a Dystric Regosol with ryegrass sown in December 2018. Treatments were: Control (without fertilisation), mineral fertiliser (MF), digestate (DG) and cattle slurry (CS). MF was applied at an Ni rate of 85 kg ha-1 at sowing and 42.5 kg ha-1 at the first cut and the remaining 42.5 kg ha-1 at the second cut. DG and CS were applied at a rate corresponding to the application of 170 N kg ha-1 only at sowing (170No) or with 85 kg No ha-1 at sowing and 42.5 kg Ni ha-1 at the first cut and the same amount at the second cut. MF, DG and CS treatments were also done with and without the application of 35 kg P ha-1 at sowing as single superphosphate. Irrespective to the fertilisers used the fertilisation increased significantly (p < 0.001) the crop yield. DG and CS showed similar yields between the same treatments. MF showed the highest yield that was similar to DG with No+Ni application and to CS with only No or No+Ni but always with P fertilisation.

Keywords

Circular economy Nutrient's cycling Sustainable fertilisation

URI

http://hdl.handle.net/10400.11/6769

Citation

MONTEIRO, M.C.H. [et al.] (2019) - Use of digestate and cattle slurry as alternative sources for crop fertilisation : effects on ryegrass production. In International Conference: Wastes: Solutions, Treatments and Opportunities,5, Costa da Caparica, 2019 - P. 38-40.1. ISSN 2183-0568.