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It is still unclear the impact on phosphorus (P) losses to runoff waters of digestates as sources of N instead of inorganic N fertilisers in over fertilised soils with P. A field experiment was done in a sandy and acidic soil high in P. The experimental design was completely randomised with five treatments. The inorganic N fertilisation (90\u00a0kg\u00a0ha<jats:sup>\u22121<\/jats:sup>) was done in four treatments, those with past P inputs of the following: (i) inorganic N and P fertilisers (Ni\/MF), (ii) organic amendments (pig or duck dry slurry-Ni\/PS and Ni\/DS or cattle manure compost-Ni\/CM). Digestate was applied in plots with past P input of cattle slurry (DG\/CS) providing also 90\u00a0kg\u00a0N\u00a0ha<jats:sup>\u22121<\/jats:sup>. Ryegrass was sowed as cover crop. The concentration of total dissolved P in runoff waters was high in all treatments and ranged between 0.5 (Ni\/PS) and 2.6\u00a0mg L<jats:sup>\u22121<\/jats:sup> (DG\/CS). These runoff waters pose a risk of non-source P pollution for fresh waters. In soils with low P sorption capacity and over fertilised with P, the fertilisation with anaerobic digestate as the only source of N to crops increased the risk of P losses to runoff waters compared with inorganic N fertilisation. Therefore, the amount of digestate applied to soil must be calculated considering its N:P ratio in order to not exceed the crop P requirement.<\/jats:p>","DOI":"10.1007\/s11270-021-05382-y","type":"journal-article","created":{"date-parts":[[2021,10,14]],"date-time":"2021-10-14T05:02:47Z","timestamp":1634187767000},"update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":3,"title":["Phosphorus Losses to Surface Runoff Waters After Application of Digestate to a Soil Over Fertilised with Phosphorus"],"prefix":"10.1007","volume":"232","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-0101-1599","authenticated-orcid":false,"given":"Carmo","family":"Horta","sequence":"first","affiliation":[]},{"ORCID":"https:\/\/orcid.org\/0000-0002-9998-7815","authenticated-orcid":false,"given":"Jo\u00e3o Paulo","family":"Carneiro","sequence":"additional","affiliation":[]}],"member":"297","published-online":{"date-parts":[[2021,10,14]]},"reference":[{"unstructured":"AFNOR: NF U44\u2013051. 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