{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,1,15]],"date-time":"2026-01-15T01:01:41Z","timestamp":1768438901668,"version":"3.49.0"},"reference-count":41,"publisher":"MDPI AG","issue":"1","license":[{"start":{"date-parts":[[2021,12,27]],"date-time":"2021-12-27T00:00:00Z","timestamp":1640563200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Applied Sciences"],"abstract":"<jats:p>Anaerobic digestion is a valuable process to use livestock effluents to produce green energy and a by-product called digestate with fertilising value. This work aimed at evaluating the fertilising value of the solid fraction (SF) of a digestate as an organic amendment and as a source of nitrogen to crops replacing mineral N. A field experiment was done with two consecutive vegetable crops. The treatments were: a control without fertilisation; Ni85 mineral fertilisation with 85 kg ha\u22121 of mineral N; fertiliser with digestate at an increasing nitrogen application rate (kg N ha\u22121): DG-N85 DG-N170, DG-N170+85, DG-N170+170; fertilisation with digestate together with Ni: DG-N85+Ni60, DG-N170+Ni60, DG-N170+Ni25. The results showed a soil organic amendment effect of the SF with a beneficial effect on SOM, soil pH and exchangeable bases. The SF was able to replace part of the mineral N fertilisation. The low mineralisation of the stable organic matter together with some immobilisation of mineral N from SF caused low N availability. The fertilisation planning should consider the SF ratio between the organic N (NO) and total N (TKN). Low NO:TKN ratios (\u22480.65) needed lower Ni addition to maintaining the biomass production similar to the mineral fertilisation.<\/jats:p>","DOI":"10.3390\/app12010248","type":"journal-article","created":{"date-parts":[[2021,12,28]],"date-time":"2021-12-28T01:18:15Z","timestamp":1640654295000},"page":"248","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":25,"title":["Use of Digestate as Organic Amendment and Source of Nitrogen to Vegetable Crops"],"prefix":"10.3390","volume":"12","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-0101-1599","authenticated-orcid":false,"given":"Carmo","family":"Horta","sequence":"first","affiliation":[{"name":"Polytechnic Institute of Castelo Branco, School of Agriculture, Quinta da Sra. de M\u00e9rcules, 6001-909 Castelo Branco, Portugal"},{"name":"CERNAS-IPCB Research Centre for Natural Resources, Environment and Society, Polytechnic Institute of Castelo Branco, 6001-909 Castelo Branco, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-9998-7815","authenticated-orcid":false,"given":"Jo\u00e3o Paulo","family":"Carneiro","sequence":"additional","affiliation":[{"name":"Polytechnic Institute of Castelo Branco, School of Agriculture, Quinta da Sra. de M\u00e9rcules, 6001-909 Castelo Branco, Portugal"},{"name":"CERNAS-IPCB Research Centre for Natural Resources, Environment and Society, Polytechnic Institute of Castelo Branco, 6001-909 Castelo Branco, Portugal"}]}],"member":"1968","published-online":{"date-parts":[[2021,12,27]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"331","DOI":"10.1016\/j.ics.2006.03.013","article-title":"Utilization of anaerobically digested dairy slurry combined with other wastes following application to agricultural land","volume":"1293","author":"Tani","year":"2006","journal-title":"Int. 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