{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,24]],"date-time":"2026-09-24T00:36:02Z","timestamp":1790210162932,"version":"4.1.0"},"reference-count":44,"publisher":"Frontiers Media SA","license":[{"start":{"date-parts":[[2021,12,21]],"date-time":"2021-12-21T00:00:00Z","timestamp":1640044800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":["frontiersin.org"],"crossmark-restriction":true},"short-container-title":["Front. Plant Sci."],"abstract":"<jats:p>Manure and sewage sludge are known to add significant amounts of zinc (Zn) and other metals to soils. However, there is a paucity of information on the fate of Zn that derives from complex organic fertilizers in soil\u2013plant systems and the contribution of these fertilizers to the Zn nutrition of crops. To answer these questions, we grew Italian ryegrass in the presence of ZnSO<jats:sub>4<\/jats:sub>, sewage sludge, and cattle and poultry manure in an acidic soil from Heitenried, Switzerland, and an alkaline soil from Strickhof, Switzerland, where the isotopically exchangeable Zn had been labeled with <jats:sup>67<\/jats:sup>Zn. This allowed us to calculate the fraction of Zn in the shoots that was derived from fertilizer, soil, and seed over 4 successive cuts. In addition, we measured the <jats:sup>67<\/jats:sup>Zn:<jats:sup>66<\/jats:sup>Zn isotope ratio with the diffusive gradients in thin films technique (DGT) on soils labeled with <jats:sup>67<\/jats:sup>Zn and incubated with the same fertilizers. After 48 days of growth, the largest fraction of Zn in the ryegrass shoots was derived from the soil (79\u201388%), followed by the Zn-containing fertilizer (11\u201320%); the least (&amp;lt;2.3%) came from the seed. Only a minor fraction of the Zn applied with the fertilizer was transferred to the shoots (4.7\u201312%), which indicates that most of the freshly added Zn remained in the soil after one crop cycle and may thereby contribute to a residual Zn pool in the soil. The <jats:sup>67<\/jats:sup>Zn:<jats:sup>66<\/jats:sup>Zn isotope ratios in the DGT extracts and the shoots measured at cut 4 were identical, suggesting that the DGT and plant took up Zn from the same pool. The proportion of Zn derived from the fertilizers in the DGT extracts was also identical to that measured in ryegrass shoots at cut 4. In conclusion, this work shows that stable Zn isotope labeling of the soil available Zn can be used to precisely quantify the impact of complex organic fertilizers on the Zn nutrition of crops. It also demonstrates that DGT extractions on labeled soils could be used to estimate the contribution of Zn fertilizers to plant nutrition.<\/jats:p>","DOI":"10.3389\/fpls.2021.730679","type":"journal-article","created":{"date-parts":[[2021,12,21]],"date-time":"2021-12-21T05:02:04Z","timestamp":1640062924000},"update-policy":"https:\/\/doi.org\/10.3389\/crossmark-policy","source":"Crossref","is-referenced-by-count":13,"title":["The Use of Stable Zinc Isotope Soil Labeling to Assess the Contribution of Complex Organic Fertilizers to the Zinc Nutrition of Ryegrass"],"prefix":"10.3389","volume":"12","author":[{"given":"Bo-Fang","family":"Yan","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Thilo","family":"D\u00fcrr-Auster","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Emmanuel","family":"Frossard","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Matthias","family":"Wiggenhauser","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1965","published-online":{"date-parts":[[2021,12,21]]},"reference":[{"key":"B1","doi-asserted-by":"publisher","first-page":"e101487","DOI":"10.1371\/journal.pone.0101487","article-title":"Green manure addition to soil increases grain zinc concentration in bread wheat","volume":"9","author":"Aghili","year":"2014","journal-title":"PLoS ONE"},{"key":"B2","doi-asserted-by":"publisher","first-page":"537","DOI":"10.1007\/s10653-009-9255-4","article-title":"Soil factors associated with zinc deficiency in crops and humans","volume":"31","author":"Alloway","year":"2009","journal-title":"Environ. 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