{"title":"Contents: J. Plant Nutr. Soil Sci. 6/2024","authors":"","doi":"10.1002/jpln.202470064","DOIUrl":"https://doi.org/10.1002/jpln.202470064","url":null,"abstract":"","PeriodicalId":16802,"journal":{"name":"Journal of Plant Nutrition and Soil Science","volume":"187 6","pages":"846"},"PeriodicalIF":2.6,"publicationDate":"2024-12-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/jpln.202470064","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142762546","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Jeroen H. T. Zethof, Stefan Julich, Karl-Heinz Feger, Dorit Julich
{"title":"Legacy effect of 25 years reduced atmospheric sulphur deposition on spruce tree nutrition","authors":"Jeroen H. T. Zethof, Stefan Julich, Karl-Heinz Feger, Dorit Julich","doi":"10.1002/jpln.202400097","DOIUrl":"https://doi.org/10.1002/jpln.202400097","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> Background</h3>\u0000 \u0000 <p>Since the mid-1990s, sulphur (S) pollution was drastically reduced in Central Europe. Over time, this has led to a distinct reduction in S availability for Norway spruce (<i>Picea abies</i> Karst.), which is still the most important timber species in Central European forestries.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Aims</h3>\u0000 \u0000 <p>Determination of the Norway spruce nutritional status of former strongly affected areas by S pollution (Saxony) with different degrees of liming by assessing their foliar element contents and comparing them to regions remote from historical high S deposition.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Methods</h3>\u0000 \u0000 <p>Sites were selected based on levels of S deposition in the 1970–1990s with historical high deposition in Saxony (NE Germany), low deposition at Schluchsee (SW Germany) and Davos (Switzerland) as a clean air reference. Needles were sampled in late autumn 2019/2020 and elemental contents determined. Additional historical data on foliar S contents were available.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Results</h3>\u0000 \u0000 <p>Historical data showed a clear decrease in foliar S contents in the Saxonian sites over the last 25 years, independent of liming. No difference between all study sites was found in the most recent sampling, whereas S together with other macronutrients strongly indicates deficiencies for forest growth and health.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Conclusions</h3>\u0000 \u0000 <p>After 25 years of reduced S deposition, S nutrition became low for Norway spruce trees in Saxony, whereas soil parent material determines the overall tree nutritional status with respect to other nutrients. As such, no difference between sites with historical high, low or no S deposition was found. Further studies should focus on the mineralization of organic S in the topsoil to understand if S is effectively recycled within the forest ecosystem and on the effect of other diminishing nutrients such as Mg and P.</p>\u0000 </section>\u0000 </div>","PeriodicalId":16802,"journal":{"name":"Journal of Plant Nutrition and Soil Science","volume":"187 6","pages":"834-843"},"PeriodicalIF":2.6,"publicationDate":"2024-10-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/jpln.202400097","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142762579","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Hana You, Paul Martinez, Richard Evans, Astrid Volder
{"title":"Priming effects on decomposition depend on organic matter in the growing media","authors":"Hana You, Paul Martinez, Richard Evans, Astrid Volder","doi":"10.1002/jpln.202300405","DOIUrl":"https://doi.org/10.1002/jpln.202300405","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> Background</h3>\u0000 \u0000 <p>Liquid organic fertilizer (LOF) and root exudates contain easily decomposable carbon that can stimulate microbial growth. It is unknown what role the amount of organic matter (OM) in the growing media, and potential interactions between root presence and LOF, might play in enhancing the breakdown of OM.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Aims</h3>\u0000 \u0000 <p>The aim was to better understand how the decomposition rate of plant litter is affected by added fertilizer, plant presence, and growing media OM content.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Methods</h3>\u0000 \u0000 <p>A container experiment was conducted with and without tomato plants (<i>Solanum lycopersicum</i> L.; Heinz 5608 variety) present to evaluate the effect of three one-time fertilizer additions (no fertilizer, LOF, and synthetic fertilizer) on litter decomposition rate. The equivalent amount of nitrogen (N), phosphorus (P), and potassium(K) was added in both fertilizer treatments. The experiment was conducted using two growing media, one containing high OM and one with negligible OM.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Results</h3>\u0000 \u0000 <p>The presence of tomato roots stimulated litter decomposition in high OM media, but not in low OM media. Adding LOF did not affect decomposition in either growing medium. Adding synthetic fertilizer led to a negative priming effect in low OM media when roots were present. The rate of decomposition was not affected by root traits.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Conclusions</h3>\u0000 \u0000 <p>When ample OM was available, the presence of plant roots had a strong positive impact on litter decomposition. In both low and high OM media, a one-time addition of fertilizer had minimal or negative effects on litter decomposition. We speculate that the continuous nature of root exudation leads to sustained changes in the microbial population (both community composition and size). Boosting root length growth via the one-time addition of inorganic fertilizer when OM was negligible allowed the plant to outcompete decomposing microbes for N, possibly leading to selection for microbes that primarily feed on exudates, which resulted in retarded litter decomposition rates. In conclusion, as adding inorganic fertilizer stimulated plant and root growth more than adding the equivalent nutrients in LOF, particularly in growth media with a high OM content, it is better to add inorganic nutrients than LOF to stimulate OM breakdown when plants are present.</p>\u0000 </section>\u0000 ","PeriodicalId":16802,"journal":{"name":"Journal of Plant Nutrition and Soil Science","volume":"187 6","pages":"826-833"},"PeriodicalIF":2.6,"publicationDate":"2024-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/jpln.202300405","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142762612","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Contents: J. Plant Nutr. Soil Sci. 5/2024","authors":"","doi":"10.1002/jpln.202470054","DOIUrl":"https://doi.org/10.1002/jpln.202470054","url":null,"abstract":"","PeriodicalId":16802,"journal":{"name":"Journal of Plant Nutrition and Soil Science","volume":"187 5","pages":"692"},"PeriodicalIF":2.6,"publicationDate":"2024-10-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/jpln.202470054","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142429358","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}