Agrosystems, Geosciences & Environment最新文献

{"title":"Optimum plant density and inorganic fertilizer application improved selected soil chemical properties and common bean productivity in southern Ethiopia","authors":"Demissie Alemayehu,&nbsp;Deressa Shumi,&nbsp;Erana Kebede,&nbsp;Nano Alemu Daba,&nbsp;Nigussie Dechassa","doi":"10.1002/agg2.70079","DOIUrl":"https://doi.org/10.1002/agg2.70079","url":null,"abstract":"<p>Poor soil fertility and inappropriate plant density are the major factors that constrain the productivity of common bean (<i>Phaseolus vulgaris</i> L.) in tropical Africa, including Ethiopia. This problem necessitates improving soil fertility and optimizing agronomic practices. Therefore, we conducted field experiments from 2019 to 2021, integrating plant density and multinutrient fertilizer application to improve soil properties and common bean productivity in southern Ethiopia. The treatments included four plant densities (333,300 plants ha⁻¹, 250,000 plants ha⁻¹, 200,000 plants ha⁻¹, and 166,600 plants ha⁻¹) and five fertilizer rates (0, 50, 100, 150, and 200 kg NPS ha⁻¹). The application of NPS fertilizer reduced the soil pH while increasing the soil organic carbon, total nitrogen, and available sulfur and phosphorus contents but did not affect the cation exchange capacity. Similarly, at the lowest plant density, the available soil sulfur and cation exchange capacity improved. Increasing the NPS application increased common bean growth and yield components, particularly when the plant density was the lowest. An optimum grain yield of 3056.28 kg ha⁻¹ was obtained with the application of 150 kg NPS ha⁻¹ and a plant density of 200,000 plants ha⁻¹, with a net return of 80,132.56 ETB ha⁻¹ and a marginal return rate of 4169.10%. It was concluded that applying 150 kg of NPS at a common bean plant density of 200,000 ha⁻¹ resulted in an optimum grain yield. Using the stated amount of NPS and optimizing the density in the study area, smallholder farmers can improve common bean productivity and soil organic carbon, total nitrogen, sulfur, and phosphorus availability.</p>","PeriodicalId":7567,"journal":{"name":"Agrosystems, Geosciences & Environment","volume":"8 1","pages":""},"PeriodicalIF":1.3,"publicationDate":"2025-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/agg2.70079","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143689130","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Manganese foliar fertilizer does not impact yield or grade of Florida peanut","authors":"Angel S. Zubieta,&nbsp;Lauren R. Geiss,&nbsp;Edmundo R. Caballero Espinosa,&nbsp;Emma G. Matcham","doi":"10.1002/agg2.70058","DOIUrl":"https://doi.org/10.1002/agg2.70058","url":null,"abstract":"<p>In the southeastern United States, peanut [<i>Arachis hypogaea</i> (L.)] is grown in sandy soils with recommended pH ranges (6.2–6.5) that might cause manganese (Mn) deficiency. This study evaluated the effect of foliar-applied Mn on yield, grade and leaf nutrient content of peanuts grown in sandy soils with a moderately acidic pH. Treatments compared two rates, timings, and sources (1x or 2x current recommendation; one application at first flower or one application at first flower and again 2 weeks later; manganese sulfate (MnSO₄) or chelated Mn-EDTA [ethylenediaminetetraacetic acid disodium manganese]). Small plots were established at three site-years, and treatments were replicated five times using a randomized complete block design. Site-years had average pod yields of 7221–9899 kg ha⁻¹ with no treatment effect within site-year (<i>p</i> = 0.63). Leaf Mn content averaged 43.3–67.5 ppm at each site-year, with no treatment effect within site-year (<i>p</i> = 0.25). Foliar applications of MnSO₄ or Mn-EDTA to peanut are not required when symptoms of deficiency in leaf tissue are not evident and soil pH is below 6.2.</p>","PeriodicalId":7567,"journal":{"name":"Agrosystems, Geosciences & Environment","volume":"8 1","pages":""},"PeriodicalIF":1.3,"publicationDate":"2025-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/agg2.70058","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143645913","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effect of early and late post emergence herbicides on weed suppression, crop injury, and biomass yield of industrial hemp in semiarid conditions","authors":"Preetaman Bajwa,&nbsp;Rupinder Saini,&nbsp;Sukhbir Singh,&nbsp;Jasleen Makkar,&nbsp;Calvin Trostle,&nbsp;Hardeep Singh","doi":"10.1002/agg2.70078","DOIUrl":"https://doi.org/10.1002/agg2.70078","url":null,"abstract":"<p>Industrial hemp is receiving attention for its numerous benefits, particularly in the fiber industry. Weed competition is a primary concern for hemp cultivation, causing reduced yields and inferior-quality fiber. However, little is known about herbicide application in hemp since a limited range of herbicides are available for hemp production. During 2023, this study evaluated the effect of different post-emergence herbicides applied at early and late growth stages to optimize weed suppression and minimize crop injury in hemp under semiarid conditions. A randomized complete block design was used with six herbicide treatments, including early post (2 weeks after planting [WAP]) and late post (5 WAP) emergence applications of <i>S</i>-metolachlor, clopyralid, and ethalfluralin. Hemp plant stand showed no significant difference among treatments. Early post herbicide application reduced 86% of weed biomass compared to untreated control at 7 WAP. By 10 WAP, weed biomass became comparable across treatments. At harvest, untreated control recorded comparatively higher weed biomass than early post treatments and late post ethalfluralin. Plant height remained nonsignificant among treatments until 10 WAP. At harvest, control showed no variation with late post treatments but recorded an average of 63% lower plant height than early post applications. Hemp biomass was insignificantly affected by treatments at 10 WAP. However, on average, early post <i>S</i>-metolachlor and ethalfluralin applications demonstrated potential as effective herbicides, yielding four-folds greater hemp biomass than untreated control at harvest. In conclusion, early post <i>S</i>-metolachlor and ethalfluralin are promising tools for weed control, enhancing crop competitiveness and yield in hemp cultivation.</p>","PeriodicalId":7567,"journal":{"name":"Agrosystems, Geosciences & Environment","volume":"8 1","pages":""},"PeriodicalIF":1.3,"publicationDate":"2025-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/agg2.70078","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143645780","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Land use dynamics and its effect on selected soil physicochemical properties in Necho watershed, northwest Ethiopia","authors":"Amare Bitew,&nbsp;Eyayu Molla,&nbsp;Derege Tsegaye Meshesha,&nbsp;Tamirat Wato,&nbsp;Kassie Getnet,&nbsp;Cherinet Miju","doi":"10.1002/agg2.70076","DOIUrl":"https://doi.org/10.1002/agg2.70076","url":null,"abstract":"<p>This study was conducted in the Necho watershed, northwest Ethiopia with the objective of determining the impact of land use dynamics on selected soil physicochemical properties. The land use dynamics were determined by analyzing Landsat satellite images from 1988, 2003, and 2019 using ERDAS 2014 and Arc GIS 10.3 software (where ERDAS and GIS are earth resource data analysis system and geographic information system, respectively). Four major land use types, natural forest, grazing land, cultivated land, and plantation forest, were selected and soil samples from 0- to 20-cm and 20- to 40-cm soil depth were collected from disturbed and undisturbed sites. The land use change analysis shows an increase in forestland, whereas cultivated and grazing lands have decreased. The analysis of soil properties revealed that clay, bulk density (BD), soil organic matter (SOM), total nitrogen (TN), available phosphorus (AP), exchangeable magnesium, sodium, and cation exchange capacity (CEC) were affected (<i>p</i> &lt; 0.05) by soil depth and land use types. The lowest densities and the highest fraction of clay, soil pH, SOM, TN, AP, CEC, and exchangeable base were recorded in forestland. All soil parameters decrease with increasing soil depth except clay, BD, soil pH, and exchangeable bases. The soil parameters in cultivated land and plantation forest were lower than natural forest and grazing lands. Therefore, immediate intervention to protect the remnant natural forest and to replenish the degraded soil properties is needed.</p>","PeriodicalId":7567,"journal":{"name":"Agrosystems, Geosciences & Environment","volume":"8 1","pages":""},"PeriodicalIF":1.3,"publicationDate":"2025-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/agg2.70076","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143638789","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Yellow toadflax (Linaria vulgaris) management with wiper- and broadcast-applied glyphosate under greenhouse conditions","authors":"Eric A. L. Jones,&nbsp;Jill K. Alms,&nbsp;David A. Vos","doi":"10.1002/agg2.70080","DOIUrl":"https://doi.org/10.1002/agg2.70080","url":null,"abstract":"<p>Yellow toadflax [<i>Linaria vulgaris</i> (Mill.)] is an invasive perennial broadleaf weed of the Northern Great Plains region that negatively impacts forage production and wildlife habitat. Few management tactics exist that effectively control the weed species. Glyphosate is a nonselective herbicide that could effectively manage yellow toadflax but is rarely used in pasture/rangeland system due to injury of desirable vegetation. Wiper-applied glyphosate could selectivity control yellow toadflax with minimal injury on desirable vegetation. Greenhouse experiments were conducted to determine the effectiveness of various concentrations and rates of wiper- and broadcast-applied glyphosate on flowering yellow toadflax plants. Plants treated with glyphosate via wiper applicator exhibited injury (63%–80%) and reduced fresh biomass (53%–73%) compared to the nontreated plants. However, the incurred injury and reductions of fresh biomass were not different across the tested glyphosate concentrations. Plants treated with glyphosate via broadcast application(1260 and 2520 g ae ha⁻¹) exhibited injury (48%–62%), but biomass was no different when compared to the nontreated plants. The results of the experiments suggest that labeled glyphosate concentrations (33%–75%) for wiper applications provide similar control of yellow toadflax under greenhouse conditions. Broadcast glyphosate applications caused injury on the treated plants but did not decrease biomass compared to nontreated plants. Therefore, wiper-applied glyphosate may be a more viable option to manage yellow toadflax.</p>","PeriodicalId":7567,"journal":{"name":"Agrosystems, Geosciences & Environment","volume":"8 1","pages":""},"PeriodicalIF":1.3,"publicationDate":"2025-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/agg2.70080","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143645912","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A review of sexual strategies in Cannabis sativa L. under genomic and environmental controls","authors":"Yousoon Baek,&nbsp;Daniela Vergara","doi":"10.1002/agg2.70050","DOIUrl":"https://doi.org/10.1002/agg2.70050","url":null,"abstract":"<p><i>Cannabis sativa</i> L. (marijuana, hemp) is one of the few dioecious angiosperm species with sex chromosomes. Along with other closely related genera from the family Cannabaceae, <i>C. sativa</i> exhibits monoecious (unisexual flowers at different locations within the individual) and dioecious (two sexes in separate individuals) populations. Despite recent progress in understanding the plant's biology, its sexual strategies are still not fully understood and key advancements such as complete genome assemblies that include the Y and monoecious chromosomes are still lacking. Here, we summarize the diverse reproductive strategies within angiosperms focusing on the family Cannabaceae—with members that have varying sex chromosome number—and specifically on <i>C. sativa</i>. We include the characterization of the non-recombining and pseudoautosomal regions of the Y chromosome, the different size estimates of the sex chromosomes, and the multiple genetic markers that have been developed for sex determination in <i>C. sativa</i>. We then describe the genetic and environmental factors influencing sex expression in <i>C. sativa</i>, with external factors presenting practical applications in agriculture systems such as the production of “feminized seeds” through sex reversal techniques. Additionally, important agricultural characteristics between males, females, and monoecious plants emphasize the importance of sex determination for fiber quality and medicinal applications. This comprehensive overview of sex determination in <i>C. sativa</i> contributes significantly to the understanding of this complex and economically important plant, offering valuable insights for researchers and cultivators in this nascent industry.</p>","PeriodicalId":7567,"journal":{"name":"Agrosystems, Geosciences & Environment","volume":"8 1","pages":""},"PeriodicalIF":1.3,"publicationDate":"2025-03-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/agg2.70050","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143595283","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Assessment of soil erosion and sedimentation dynamics in the Rift Valley Lakes Basin, Ethiopia","authors":"Degefu Dogiso,&nbsp;Alemayehu Muluneh,&nbsp;Abiot Ketema","doi":"10.1002/agg2.70062","DOIUrl":"https://doi.org/10.1002/agg2.70062","url":null,"abstract":"<p>Soil erosion and sedimentation are global issues threatening livelihoods and development, including in the Ethiopian Rift Valley Lakes Basin (RVLB). Despite several studies conducted at the watershed and subbasin levels in the basin, there is a lack of an organized review. This review synthesizes findings from 32 studies (2008–2023) to assess soil erosion and sedimentation rates, causes, and impacts in the RVLB. Key findings indicate that land use changes, such as converting vegetation and woodlands into cultivation and settlements, are the primary drivers of soil loss, with additional factors including steep slopes, poor conservation practices, and high rainfall. The mean annual soil loss rate in the basin is 28.44 t/ha/year, surpassing the national average of 16.5 t/ha/year and the RVLB average of 15.8 t/ha/year. Methodologies mainly rely on the Universal Soil Loss Equation and its revised version, Revised Universal Soil Loss Equation, alongside tools such as Soil and Water Assessment Tool, Integrated Valuation of Ecosystem Services and Tradeoffs—Sediment Delivery Ratio, object-based image analysis, and field measurements. The impacts include severe effects on crop production, hydrological efficiency, and lake sedimentation. Research gaps highlight methodological inconsistencies, limited studies on direct economic impacts, underrepresented gully erosion dynamics, and a lack of high-resolution data. Future research should focus on integrating high-resolution datasets, employing advanced geographic information system and machine learning techniques, and conducting socioeconomic impact studies. Addressing these areas is crucial for developing sustainable soil and water conservation strategies in the RVLB.</p>","PeriodicalId":7567,"journal":{"name":"Agrosystems, Geosciences & Environment","volume":"8 1","pages":""},"PeriodicalIF":1.3,"publicationDate":"2025-03-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/agg2.70062","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143602639","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Tomato production in off-season: Assessment of the influence of transplanting dates on virus incidence and yield in Benin","authors":"Armel C. G. Mensah,&nbsp;Tatiana W. Koura,&nbsp;Barthélemy B. Yarou,&nbsp;Cedric Mankponse Antoine Assogba,&nbsp;Hemaho B. Taboe,&nbsp;Francoise Assogba Komlan,&nbsp;Guillaume L. Amadji","doi":"10.1002/agg2.70068","DOIUrl":"https://doi.org/10.1002/agg2.70068","url":null,"abstract":"<p>Tomato (<i>Solanum lycopersicum</i> L. 1753) production in South Benin faces significant challenges during the off-season primarily due to the Tomato Yellow Leaf Curl Virus (TYLCV) transmitted by whiteflies (<i>Bemisia tabaci</i>). This study investigates the impact of four different transplanting dates on TYLCV incidence and the productivity of three tomato varieties (PADMA, PLATINUM, and TOUNVI) during the off-season in southern Benin. The experiment was conducted over two off-season periods (2018–2019 and 2019–2020) at the Agonkanmey station, with transplanting dates in November, December, January, and February. Climatic conditions during the study were characterized by low rainfall (&lt;140 mm) and high relative humidity (up to 100%). The severity of TYLCV varied significantly among transplanting dates and varieties, with the highest severity observed in December and January transplants, while November and February transplants showed lower severity. Growth parameters, including plant height and the number of branches, were significantly influenced by transplanting dates and varieties, with better growth observed in November and February. December and January transplanting dates resulted in poorer growth and lower yields across all varieties. The yield analysis indicated that PADMA and TOUNVI varieties performed best when transplanted in February, with yields of up to 7.46 t/ha for TOUNVI in the 2019–2020 season. The study concludes that strategic transplanting in November and February can optimize tomato yields and minimize TYLCV impact, suggesting that proper scheduling of planting dates could enhance tomato availability and reduce the need for imports during the off-season.</p>","PeriodicalId":7567,"journal":{"name":"Agrosystems, Geosciences & Environment","volume":"8 1","pages":""},"PeriodicalIF":1.3,"publicationDate":"2025-03-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/agg2.70068","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143595618","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Integrated effect of row spacing and herbicide programs on photosynthetically active radiation, control, and seed production of multiple herbicide-resistant Palmer amaranth in corn","authors":"Ramandeep Kaur,&nbsp;Nevin C. Lawrence,&nbsp;Yeyin Shi,&nbsp;Parminder S. Chahal,&nbsp;Stevan Z. Knezevic,&nbsp;Amit J. Jhala","doi":"10.1002/agg2.70074","DOIUrl":"https://doi.org/10.1002/agg2.70074","url":null,"abstract":"<p>Multiple herbicide-resistant (MHR) Palmer amaranth has been ranked as the most problematic weed in row crop fields in Nebraska. Integration of narrow row spacing with herbicide might augment control of MHR Palmer amaranth. The objectives of this study were to evaluate an integrated effect of row spacing and herbicide programs for MHR Palmer amaranth control, density, seed production, corn injury, photosynthetically active radiation (PAR) interception, and grain yield in glyphosate/glufosinate-resistant corn. Field experiments were conducted in 2020 and 2021 in a grower's field infested with acetolactate synthase-inhibitor/atrazine/glyphosate-resistant Palmer amaranth near Carleton, NE. Herbicide-by-row spacing interactions were significant for most variables. Flufenacet/isoxaflutole/thiencarbazone-methyl followed by (fb) glufosinate, acetochlor/mesotrione applied pre-emergence (PRE) or fb glufosinate, acetochlor/clopyralid/flumetsulam fb glufosinate, and glufosinate fb dicamba/tembotrione controlled Palmer amaranth ≥90% at 90 days after late post-emergence (DALPOST) herbicide application. Glufosinate fb dicamba/tembotrione and acetochlor/mesotrione fb glufosinate with 38- and 76-cm row spacing, flufenacet/isoxaflutole/thiencarbazone-methyl fb glufosinate, and acetochlor/clopyralid/flumetsulam fb glufosinate with 38-cm row spacing recorded no Palmer amaranth 30 DALPOST. Herbicide programs with narrow row spacing had numerically higher PAR interception compared with 76-cm row spacing 30 days after early post-emergence (DAEPOST) and 15 DALPOST. Higher corn yield (13,222–13,596 kg ha⁻¹) was obtained with acetochlor/clopyralid/flumetsulam fb glufosinate with 38-cm row spacing. Palmer amaranth seed production was zero with acetochlor/mesotrione fb glufosinate, and glufosinate fb dicamba/tembotrione; flufenacet/isoxaflutole/thiencarbazone-methyl fb glufosinate in 76-cm row spacing; and acetochlor/clopyralid/flumetsulam fb glufosinate in 38-cm row spacing.</p>","PeriodicalId":7567,"journal":{"name":"Agrosystems, Geosciences & Environment","volume":"8 1","pages":""},"PeriodicalIF":1.3,"publicationDate":"2025-03-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/agg2.70074","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143595282","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Equilibrium and kinetic studies of arsenite adsorption to a thiol-functionalized surface as a model for arsenite interactions with natural organic matter","authors":"Anita A. Sanchez,&nbsp;Matthew C. Reid","doi":"10.1002/agg2.70063","DOIUrl":"https://doi.org/10.1002/agg2.70063","url":null,"abstract":"<p>Sorption mechanisms for the binding of arsenic (As) to thiol functional groups (-SH) in natural organic matter (NOM) may play an important role in controlling inorganic As mobility and bioavailability in anaerobic environments, including rice paddies. There is great interest in the behavior of As in anaerobic soil-water environments due to concerns over As uptake into rice. Here, we examine arsenite (As(III)) sorption onto the thiol-functionalized resin Ambersep GT74 as a model for thiol binding sites in NOM. Specific objectives of this work are to evaluate the kinetics and reversibility of As(III) adsorption onto thiol sites. We perform adsorption and desorption experiments, and kinetics experiments to evaluate equilibrium and kinetic aspects of As(III) adsorption to a thiol-rich adsorbent. Adsorption kinetics were well described by a piecewise first-order model, with relatively fast adsorption during the first 24 h followed by slow adsorption for an additional 72 h. Langmuir isotherm model fits indicated that affinity and capacity values of Ambersep GT74 for As(III) were not significantly different across a pH range typical for natural soil–water systems. Desorption experiments confirmed that As(III) sorption was irreversible at low aqueous As(III) concentrations, suggesting that As(III) bound to thiol-containing surfaces would remain immobile and most likely unavailable for bio-uptake following changes in soil solution chemistry.</p>","PeriodicalId":7567,"journal":{"name":"Agrosystems, Geosciences & Environment","volume":"8 1","pages":""},"PeriodicalIF":1.3,"publicationDate":"2025-03-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/agg2.70063","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143595616","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}