Journal of Plant Nutrition and Soil Science最新文献

{"title":"Combining Density Fractionation and Ca K-Edge XANES Reveals Contrasting SOM–Mineral Association Patterns Shaped by Parent Material in Forest Soil O Horizons","authors":"Gabriela Villalba-Ayala,&nbsp;Luis Carlos Colocho Hurtarte,&nbsp;Wantana Klysubun,&nbsp;Jörg Prietzel","doi":"10.1002/jpln.12015","DOIUrl":"https://doi.org/10.1002/jpln.12015","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> Background</h3>\u0000 \u0000 <p>Soil organic matter (SOM) accumulation in forest soils is strongly influenced by interactions with inorganic constituents derived from parent material mineralogy. However, their role in the forest floor remains underexplored.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Aims and methods</h3>\u0000 \u0000 <p>This study investigates how different bedrock types (basalt, paragneiss, dolomite, limestone) influence SOM–mineral associations in organic (Of, Oh) and mineral (Ah) horizons of temperate forest soils, exploring the role of Ca in soil organic carbon (SOC) accumulation. We applied sequential density fractionation to separate SOM into low- (&lt;1.4 g cm⁻³, SOM–metal cation complexes), intermediate- (1.4–1.6 g cm⁻³, SOM–metal complexes and mineral associations), and heavy-density fractions (&gt;1.6 g cm⁻³, mineral-associated SOM). We quantified SOC, total Al, Fe, Ca, and Mg, and identified Ca species using Ca K-edge x-ray absorption near-edge structure (XANES) spectroscopy.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Results</h3>\u0000 \u0000 <p>In organic layers from calcareous bedrock, SOM–metal cation complexes—particularly Ca-organic complexes (e.g., Ca-carboxylates, Ca-phenols, Ca-phytates)—dominated in low- and intermediate-density fractions, likely driven by enhanced Ca²⁺ availability. This was associated with higher SOC concentrations (Of: 487–451 mg g⁻¹; Oh: 458–415 mg g⁻¹). In contrast, silicate soils—especially basalt—showed higher inorganic material contents (Of: 19%, Oh: 43%) and larger mineral-associated SOM pools (Of: 13%, Oh: 38%), likely due to intensive bioturbation and abundant pedogenic Al and Fe minerals. Ca-XANES revealed that Ca-bearing mineral types in O layers strongly depended on bedrock composition and soil pedogenesis.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Conclusions</h3>\u0000 \u0000 <p>This study highlights the role of parent material in shaping SOM–mineral associations and interactions, underscoring the importance of Ca in SOC accumulation on the forest floor.</p>\u0000 </section>\u0000 </div>","PeriodicalId":16802,"journal":{"name":"Journal of Plant Nutrition and Soil Science","volume":"188 5","pages":"822-846"},"PeriodicalIF":2.8,"publicationDate":"2025-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/jpln.12015","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145335731","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":"Soil Organic Carbon (SOC) Stocks of Mineral Arable Soils in Schleswig-Holstein and Their Future Carbon Storage Potential","authors":"Ragna-Marleen Fey,&nbsp;Conrad Wiermann","doi":"10.1002/jpln.12016","DOIUrl":"https://doi.org/10.1002/jpln.12016","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> Background</h3>\u0000 \u0000 <p>Agricultural soils have the potential for long-term carbon sequestration by building up and maintaining soil organic carbon (SOC) to mitigate climate crisis. Organic soils under grassland use are often highlighted in this regard. However, given that approximately two-thirds of Schleswig-Holstein's (SH's) (Northern Germany) agriculturally used area is classified as arable land, these large areas have a potential for additional carbon storage, too.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Aims</h3>\u0000 \u0000 <p>The aim is to determine the current SOC stocks of mineral arable soils in SH and derive additional carbon storage potentials based on these data to predict additional storage potentials for the main soil type groups and geological regions. Additionally, we aim to identify the most promising agricultural practices in arable farming to exploit these potentials.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Methods</h3>\u0000 \u0000 <p>Soil data from mineral arable sites in SH were compiled, and current carbon stocks were calculated at depths of 0–30 cm and 30–100 cm. A new method (the median method) to predict additional SOC storage potentials was developed. To evaluate management practices for enhancing SOC stocks and exploit the calculated storage potentials, an optimized scenario was designed.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Results</h3>\u0000 \u0000 <p>The mean calculated SOC stocks of mineral arable soils in SH are 113 t SOC ha⁻¹ (1 m) or 71 t SOC ha⁻¹ (30 cm). The additional SOC storage potential in the topsoil (30 cm) of the total area of 9.1 Mt SOC was calculated, that is, an average potential of 13 t SOC ha⁻¹. The scenario with five promising management practices showed that the predicted storage potential of the topsoil could be utilized by 6% in 2030 and 21% in 2040. It will take until 2090 to fully exploit the calculated potential.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Conclusions</h3>\u0000 \u0000 <p>The soils in SH show slightly higher SOC stocks and lower SOC storage potentials compared to other studies. These differences are due to variations in climate and parent material (especially marshlands), as well as the inherent limitations of the median method, which is a robust but potentially underestimating approach. It can be concluded that the exploitation of the calculated storage potentials can only be achieved through a comprehensive and long-term implementation of management practices.</p>\u0000 </section>\u0000 </div>","PeriodicalId":16802,"journal":{"name":"Journal of Plant Nutrition and Soil Science","volume":"188 4","pages":"658-667"},"PeriodicalIF":2.8,"publicationDate":"2025-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/jpln.12016","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144782941","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":"Soil Quality Indicators Based on the Agroecological Family Farmers’ Perception in São Lourenço do Sul, Brazil","authors":"Eduardo Saldanha Vogelmann,&nbsp;Sara Evangelista do Vale,&nbsp;Germano Ehlert Pollnow,&nbsp;Arisandro Rodrigues Mendes,&nbsp;Tiruneh Gizachew Ayalew","doi":"10.1002/jpln.12014","DOIUrl":"https://doi.org/10.1002/jpln.12014","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> Background</h3>\u0000 \u0000 <p>To promote the adoption of agroecological practices, it is important to value the knowledge and farmers’ perception, who have an intimate natural relationship, cultivating their agroecosystem based on observation and popular experimentation.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Aims</h3>\u0000 \u0000 <p>This project aims to develop soil quality indicators in São Lourenço do Sul by integrating scientific knowledge with the agroecological perceptions of family farmers.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Materials and Methods</h3>\u0000 \u0000 <p>Afterward, a structured questionnaire was developed and applied to the group of family farmers in São Lourenço do Sul, between March 13 and April 1, 2024.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Results</h3>\u0000 \u0000 <p>Farmers highlighted organic matter as a key indicator of soil quality, emphasizing the role of manure, compost, and green manure in maintaining it. They also associated the presence of earthworms with healthy soils. Overall, there is a strong link between organic matter and soil chemical quality. The responses show that spreading knowledge about management practices is crucial for improving soil quality.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Conclusion</h3>\u0000 \u0000 <p>The soil quality indicators are useful for adjusting management practices and highlight the value of combining farmers’ experience with scientific knowledge to shape locally appropriate policies. The development of indicators with farmers recognizes popular knowledge, increasing their interest in monitoring the soil quality of their agroecosystem.</p>\u0000 </section>\u0000 </div>","PeriodicalId":16802,"journal":{"name":"Journal of Plant Nutrition and Soil Science","volume":"188 4","pages":"650-657"},"PeriodicalIF":2.8,"publicationDate":"2025-05-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144782413","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Rhizodeposit Carbon Gradients: Potentials and Limitations of Destructive Rhizosphere Sampling on a Millimeter-Scale","authors":"Martina I. Gocke,&nbsp;Andrea Scheibe,&nbsp;Manuel Vergara Sosa,&nbsp;Doris Vetterlein,&nbsp;Johanna Pausch,&nbsp;Eva Lippold,&nbsp;Eva Lehndorff","doi":"10.1002/jpln.12011","DOIUrl":"https://doi.org/10.1002/jpln.12011","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> Background</h3>\u0000 \u0000 <p>Despite the availability of modern techniques for high-resolution non-destructive rhizosphere analysis, destructive examinations yielding a certain minimum soil amount are often required to provide detailed insights into organic matter composition.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Methods</h3>\u0000 \u0000 <p>We compared an established approach for destructive rhizosphere sampling via root brushing to a new millimeter-scale gradient sampling approach, expecting that the latter allows to characterize spatial patterns of rhizodeposit-carbon (C) distribution and relate them to root traits and soil texture. A tool to sample soil in 2 mm steps around a root was developed. Maize with and without root hairs was grown under field conditions until the end of tassel emergence, either in loam or in sand, and labeled with ¹³CO₂ one day before harvest.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Results</h3>\u0000 \u0000 <p>Both approaches showed an enrichment of C and ¹³C in sandy and partially in loamy rhizosphere, but no <i>δ</i>¹³C gradient could be statistically demonstrated due to high variability. The major uncertainty of both approaches was the potential masking of bulk soil organic C concentration and isotopic composition by non-target roots. The new gradient sampling approach offers uniform, pre-defined, and thus neutral conditions with respect to sampling distance independent of root and soil properties; yields at least 100–200 mg of soil on a millimeter-scale from one individual root segment; and can be applied in natural settings without root growth artifacts. The presented techniques integrated signals from fine roots and root hairs.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Conclusions</h3>\u0000 \u0000 <p>For root systems with longer unbranched segments, the new approach has potential for tracing ¹³C released by roots and for analyzing plant and microbial remains at the millimeter-scale.</p>\u0000 </section>\u0000 </div>","PeriodicalId":16802,"journal":{"name":"Journal of Plant Nutrition and Soil Science","volume":"188 4","pages":"616-625"},"PeriodicalIF":2.8,"publicationDate":"2025-04-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/jpln.12011","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144782804","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":"Optimizing Nutrient Delivery in Agronomic Crops: A Review of Enhanced Efficiency Fertilizers","authors":"Kulpreet Singh,&nbsp;Ravinder Singh,&nbsp;Nkem J. Nwosu,&nbsp;Peter Omara,&nbsp;Lakesh Sharma,&nbsp;Bruce L. Dunn,&nbsp;Hardeep Singh","doi":"10.1002/jpln.12010","DOIUrl":"https://doi.org/10.1002/jpln.12010","url":null,"abstract":"<div>\u0000 \u0000 <p>The global population has been increasing for the past century, but global food production has been able to keep up with growing population growth because of fertilizer use, which has increased by 21% in the last two decades. Nevertheless, the nutrient use efficiency (NUE) is low, ranging from 10% to 55% across different crops for macronutrients with overfertilization of nutrients imposing environmental risks. There is a pressing need for better NUE for sustainable food production to meet the growing population's demand without impacting the environment. Enhanced efficiency fertilizers (EEFs) can potentially increase NUE and mitigate environmental risks by coupling their nutrient release with crop nutrient uptake. EEFs have gained significant recognition in agricultural research. This detailed review discusses the basics, classification, and benefits of EEFs worldwide in various crops, and the coating material and release mechanism of EEFs are discussed in extensive detail along with the application of EEFs with other best management practices. Additionally, the review outlines the challenges and considerations regarding EEFs that impact their adoption at a global scale and emphasizes the significance of investigating future strategies and directions, stressing the importance of a comprehensive approach to address research gaps and ways to unlock the full potential of EEFs for sustainable agriculture. The assessment underscores the efficacy of EEFs as an innovative solution to enhance NUE and mitigate environmental impacts related to fertilization.</p>\u0000 </div>","PeriodicalId":16802,"journal":{"name":"Journal of Plant Nutrition and Soil Science","volume":"188 4","pages":"570-584"},"PeriodicalIF":2.8,"publicationDate":"2025-04-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144782828","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The Contribution of Zn Uptake and Grain Zn Loading Intensity to Achieving Zn Biofortification Breeding Targets in Rice","authors":"Mbolatantely Rakotondramanana,&nbsp;James Stangoulis,&nbsp;Cécile Grenier,&nbsp;Matthias Wissuwa","doi":"10.1002/jpln.12013","DOIUrl":"https://doi.org/10.1002/jpln.12013","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> Background</h3>\u0000 \u0000 <p>Increasing Zinc (Zn) concentrations in rice grains is targeted in Zn-biofortification breeding but most rice varieties have grain Zn concentrations far below breeding targets.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Aims</h3>\u0000 \u0000 <p>High-Zn donors have been identified and our aim is to investigate whether higher grain Zn concentrations in these donors were the result of superior Zn uptake during the reproductive stage, of higher Zn loading intensities or caused by an extended Zn loading period.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Methods</h3>\u0000 \u0000 <p>Field experiments comparing two high-Zn donors to two low-Zn modern varieties were conducted over two seasons in Madagascar and tissue Zn concentrations and content determined from heading to maturity.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Results</h3>\u0000 \u0000 <p>Zn uptake between heading and maturity was not limiting grain Zn concentrations. Neither did studied genotypes differ significantly in the duration of Zn loading, which peaked 8–12 days after flowering and strongly decreased thereafter, even in high-Zn donors. Instead, the Zn loading intensity during grain filling differed with peak loading rates exceeding 60 ng Zn day⁻¹ in high-Zn donors compared to 13–37 ng Zn day⁻¹ in low-Zn varieties. This high Zn loading intensity was further evident when Zn and biomass grain loading rates were compared. Donor IRIS-9368 loaded up to 40 ng Zn mg⁻¹ grain biomass compared to 12–21 ng Zn mg⁻¹ in low-Zn varieties. This high loading intensity resulted in a zinc harvest index of 47.7% in IRIS-9368 compared to 26.1% for local variety X265 despite similar reproductive-stage Zn uptake.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Conclusions</h3>\u0000 \u0000 <p>We hypothesize that xylem-to-phloem transfer of Zn at upper nodes is more efficient in high-Zn donor IRIS-9368.</p>\u0000 </section>\u0000 </div>","PeriodicalId":16802,"journal":{"name":"Journal of Plant Nutrition and Soil Science","volume":"188 4","pages":"639-649"},"PeriodicalIF":2.8,"publicationDate":"2025-04-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/jpln.12013","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144782829","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":"From Sea to Land: Setting a Size Definition of Plastics for Soil Ecosystem Studies","authors":"Ryan Bartnick,&nbsp;Eva Lehndorff","doi":"10.1002/jpln.12006","DOIUrl":"https://doi.org/10.1002/jpln.12006","url":null,"abstract":"<p>In soil studies, the current definition of microplastics as particles &lt;5 mm was adopted directly from marine research. To our opinion, a more precise and differentiated size definition is needed to focus studies on specific challenges plastics cause for soil ecosystems. As relevant soil functions such as water, carbon, and nutrient retention and provision are mainly controlled by soil structure, biota, and chemical processes dominantly appearing in the micro- to nanoscale, we suggest adapting size ranges of plastics to the respective process scales in soil ecosystem studies. Even more, we expect that larger particles will not be incorporated into soil until they reach a size threshold compatible to soil structure (&lt;1000 µm, depending on soil properties). Redefining plastic sizes in accordance with soil processes and the International System of Units (SI) should be implemented to focus research. A unified definition of microplastics (1–1000 µm) and nanoplastics (1–1000 nm) will set a standard to further allow relating plastic sizes across research disciplines.</p>","PeriodicalId":16802,"journal":{"name":"Journal of Plant Nutrition and Soil Science","volume":"188 3","pages":"373-375"},"PeriodicalIF":2.6,"publicationDate":"2025-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/jpln.12006","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144171177","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":"Deviation From the Regression of Yield on Nitrogen Fertiliser Rate as a Tool for Detecting Fraud in Organic Banana Production","authors":"Albrecht Benzing,&nbsp;Hans-Peter Piepho,&nbsp;Ryan Orr,&nbsp;Juan-Carlos Ullauri","doi":"10.1002/jpln.12009","DOIUrl":"https://doi.org/10.1002/jpln.12009","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> Background and aims</h3>\u0000 \u0000 <p>Bananas are demanding in nitrogen (N) input; therefore, there is a temptation for organic farmers for using synthetic N fertilisers, which are not allowed under organic standards. The aim of our study was to develop a tool that identifies high banana yields obtained with suspiciously low organic N input.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Methods</h3>\u0000 \u0000 <p>We systematically reviewed literature from experimental studies on N fertilisation in bananas from all over the world. We also developed a simplified N balance model for organic bananas. Furthermore, N fertilisation and banana yield data from organic and conventional farmers in different countries were collected. From these, a subset of trustworthy organic farms was identified, as a reference concerning plausible ratios of yield versus fertilisation. A model was developed to estimate the deviation from the regression of trustworthy farms and thus identify suspicious cases.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Results</h3>\u0000 \u0000 <p>Neither literature nor the N balance led to a meaningful benchmark for differentiating plausible from non-plausible yields. The regression of yield on N fertiliser rate from the trustworthy organic farmers, however, turned out to be a helpful reference, and the deviation from this regression helps to achieve our aim. Depending on the alert limit, that is, the probability of obtaining false positive results, 4, 6, or 9 out of 157 data-pairs from organic farmers turned out to be suspicious.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Conclusion</h3>\u0000 \u0000 <p>Measuring deviation from the regression of the trustworthy farms is a useful tool for identifying organic banana farmers suspected to be using synthetic N fertilisers but is not in itself a proof of fraud. The model will improve as more data becomes available.</p>\u0000 </section>\u0000 </div>","PeriodicalId":16802,"journal":{"name":"Journal of Plant Nutrition and Soil Science","volume":"188 4","pages":"604-615"},"PeriodicalIF":2.8,"publicationDate":"2025-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/jpln.12009","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144782840","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":"A Rapid In-Field Soil Extraction Procedure to Measure Plant-Available Soil P and K Using an ISFET Multi-Sensor","authors":"Elena Najdenko,&nbsp;Vadim Riedel,&nbsp;Klaus Dittert,&nbsp;Arno Ruckelshausen,&nbsp;Frank Lorenz,&nbsp;Hans-Werner Olfs","doi":"10.1002/jpln.12007","DOIUrl":"https://doi.org/10.1002/jpln.12007","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> Background</h3>\u0000 \u0000 <p>Knowledge of plant-available soil nutrients is important for determining fertilizer requirements. Collecting this data rapidly and directly in the field could be beneficial for improving nutrient utilization efficiency.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Aim</h3>\u0000 \u0000 <p>Evaluation of the comparability of plant-available soil phosphorus (P_pa) and potassium (K_pa) measurements with a newly developed rapid soil extraction procedure based on a nutrient measurement system using an ISFET (ion-sensitive field-effect transistor) multi-sensor module (“FieldLab”) under quasi-realistic field conditions with the results of a lab-based soil analysis.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Methods</h3>\u0000 \u0000 <p>Following calibration of the FieldLab measurement system with the calcium-acetate-lactate (CAL) extraction method commonly used in Germany, the ability of the ISFET multi-sensor module to measure P_pa and K_pa under in-field conditions was investigated. For this purpose, a set of dried soil samples from 15 fields in northwest Germany was used, representing very different soil nutrient levels as well as various soil texture and soil organic matter contents. The soils were assessed using the standard lab procedure or the rapid FieldLab extraction, followed by lab measurements or nutrient quantification with the ISFET multi-sensor, respectively.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Results</h3>\u0000 \u0000 <p>Soil extraction using the FieldLab procedure showed a high correlation with the lab results (<i>R</i>² 0.97 and 0.92 for P_pa and K_pa, respectively). The combination of the rapid soil extraction followed by the ISFET measurement revealed significant correlations with the laboratory data (<i>R</i>² 0.80 and 0.79 for P_pa and K_pa, respectively).</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Conclusion</h3>\u0000 \u0000 <p>The developed ISFET-based FieldLab procedure is an innovative and reliable approach for rapid in-field nutrient analysis of P_pa and K_pa, and it has the potential to enable the timely calculation of P and K fertilizer recommendations.</p>\u0000 </section>\u0000 </div>","PeriodicalId":16802,"journal":{"name":"Journal of Plant Nutrition and Soil Science","volume":"188 4","pages":"593-603"},"PeriodicalIF":2.8,"publicationDate":"2025-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/jpln.12007","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144782930","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":"Iron (Fe) Biofortification Using Fe-Aminochelates in Sunflower Growing in Calcareous Soils","authors":"Mina Alipour Babadi,&nbsp;Mojtaba Norouzi Masir,&nbsp;Abdol Amir Moezzi,&nbsp;Afrasyab Rahnama,&nbsp;Mehdi Taghavi","doi":"10.1002/jpln.12004","DOIUrl":"https://doi.org/10.1002/jpln.12004","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> Background</h3>\u0000 \u0000 <p>Efficient agronomic approaches should be developed to alleviate iron (Fe) deficiency in lime-rich soils.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Aims</h3>\u0000 \u0000 <p>The present study aimed to investigate the efficiency of eco-friendly synthesized Fe-aminochelates in remediating Fe deficiency and improving the yield and nutritional quality of sunflower (<i>Helianthus annuus</i> L.), compared to FeSO₄ in calcareous soil.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Methods</h3>\u0000 \u0000 <p>Fe (glycine)₂ [Fe (Gly)₂] and Fe (methionine)₂ [Fe (Met)₂] aminochelates were synthesized and characterized via a CHN analyzer, H¹ NMR and FT-IR spectroscopy. In a field experiment, Fe-aminochelates and FeSO₄ were applied using three methods (priming, fertigation, and foliar spray) at various plant growth stages.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Results</h3>\u0000 \u0000 <p>The application of [Fe (Gly)₂] and [Fe (Met)₂] through different methods significantly improved the biomass yield, nutritional quality, and yield attributes, compared with those of FeSO₄. Compared with the control, foliar application of [Fe (Met)₂] increased seed yield (73.9%), oil yield (125.8%), and seed protein content (60%). In addition, antioxidant enzyme activities, total soluble protein (TSP), and seed nutrients such as Fe, N, and S concentrations, as well as the Fe concentration in leaves, also increased in response to [Fe (Gly)₂] and [Fe (Met)₂] application, whereas the N/S ratio decreased with increasing seed oil content.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Conclusions</h3>\u0000 \u0000 <p>These results suggest that the application of Fe-aminochelates may be a promising way to promote Fe biofortification and overcome Fe deficiency under calcareous conditions.</p>\u0000 </section>\u0000 </div>","PeriodicalId":16802,"journal":{"name":"Journal of Plant Nutrition and Soil Science","volume":"188 3","pages":"519-535"},"PeriodicalIF":2.6,"publicationDate":"2025-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144171414","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}