Agrosystems, Geosciences & Environment最新文献

{"title":"Assessing the long-term effects of conservation agriculture on cotton production in Northeast Louisiana using the denitrification–decomposition model","authors":"Janntul Ferdush,&nbsp;Changyoon Jeong,&nbsp;Hwangju Jeon,&nbsp;Jim Wang,&nbsp;Kyoung Ro,&nbsp;Xi Zhang,&nbsp;Meesook Lee","doi":"10.1002/agg2.20514","DOIUrl":"https://doi.org/10.1002/agg2.20514","url":null,"abstract":"<p>Conservation agriculture (CA) aims to sustain agricultural production, soil, and environmental health in agroecosystems and has been promoted throughout the United States. The adoption of CA in cotton (<i>Gossypium hirsutum</i>) systems provides both agronomic and environmental benefits. Yet, there is limited information on the long-term effects of CA practices on crop yield and adaptation strategies. An integrated CA system, that is, cover crops with no-tillage (NT) instead of conventional agriculture, was implemented in the long-term field experiments and assessed with an integrated biogeochemical model. Using the denitrification–decomposition model, this study estimated the effects of four different cover crops, for example, native grass (NG), hairy vetch (<i>Vicia villosa</i>), winter wheat (<i>Triticum aestivum</i> L.), and crimson clover (<i>Trifolium incarnatum</i>), on cotton yield under four different nitrogen (N) levels (e.g., 0, 50, 100, and 150 kg N/ha) and estimated responses on carbon (C) sequestration, and ecosystem functionality over a 10-year study. The NT-NG 50 N was used as a calibration dataset to accurately estimate the cotton lint yield with a normalized root mean square error (NRMSE) of 21% and model efficiency of 0.3. The calibration data validated the effects of hairy vetch, winter wheat, and crimson clover under the NT-50 N with NRMSE of 24%, 21%, and 25%, respectively. According to the scenario analysis, the 50 kg N/ha application with a single-irrigation event (10-cm depth) was most beneficial for maximizing the cotton yield with cover crop incorporation at the NT system over the long term. The effects of increasing cover crop biomass (i.e., double seed rate) on C content, regardless of N application rates, varied based on the relationship between the main and cover crop species. Besides, the furrow plow tillage system provided efficient C sequestration. The proposed approach stands to provide agricultural and environmental sustainability with the implementation of cover crop or crop residue incorporation instead of increased N application, seed rates, and irrigation events under NT practices.</p>","PeriodicalId":7567,"journal":{"name":"Agrosystems, Geosciences & Environment","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/agg2.20514","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140895182","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":"Coal combustion residue for crop productivity in the semiarid US High Plains","authors":"Vesh R. Thapa,&nbsp;Bijesh Maharjan,&nbsp;Humberto Blanco-Canqui,&nbsp;Nevin Lawrence,&nbsp;Saurav Das,&nbsp;Cody Creech,&nbsp;Gary W. Hergert","doi":"10.1002/agg2.20505","DOIUrl":"https://doi.org/10.1002/agg2.20505","url":null,"abstract":"<p>Carbon (C) amendments can enhance crop productivity, particularly in semiarid regions. Understanding the potential interference of C amendment with herbicide efficacies is essential to informing the practice. An experiment was conducted in western Nebraska in 2016–2018 to evaluate the effects of coal combustion residue (CCR) and herbicides on crop yields and weed density in the dry bean (<i>Phaseolus vulgaris</i> L.)–maize_db (maize [<i>Zea mays</i> L.] following dry bean)–sugarbeet (<i>Beta vulgaris</i> L.)–maize_sb (maize following sugarbeet) rotation. All crop phases of the rotation were present each year and received CCR at varying rates (0, 3.3, 6.6, 13.1, and 19.7 Mg C ha⁻¹) in spring 2016. Overall, CCR did not have consistent beneficial effects on crop yields. There were trends for yield benefits with CCR application compared to no-CCR plots in dry bean (<i>p</i> = 0.066) and sugar beet (<i>p</i> = 0.155) in 2017 and maize_db in 2018 (<i>p</i> = 0.222). In 2016, among no-herbicide treatments, the treatment with the highest CCR rate had a greater maize_sb yield (16.2 ± 0.1 Mg ha⁻¹) than the rest of the CCR treatments, including the control. The CCR application did not adversely affect herbicide efficacy in weed control. However, in 2016, among plots where herbicide (saflufenacil + dimethenamid-p) was applied, the CCR treatment (6.6 Mg C ha⁻¹) had lower maize_sb yield than the control. Future research should consider factors such as application rates, methods, and timing to assess the potential adverse effects of C amendments on herbicide efficacies.</p>","PeriodicalId":7567,"journal":{"name":"Agrosystems, Geosciences & Environment","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-05-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/agg2.20505","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140844909","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":"Integrating fall-planted cereal rye cover crop with herbicides for reducing Palmer amaranth seed production in soybean under planting green conditions","authors":"Trey Stephens,&nbsp;Humberto Blanco-Canqui,&nbsp;Stevan Z. Knezevic,&nbsp;Jenny Rees,&nbsp;Katja Kohler-Cole,&nbsp;Amit J. Jhala","doi":"10.1002/agg2.20507","DOIUrl":"https://doi.org/10.1002/agg2.20507","url":null,"abstract":"<p>Cover crops are usually terminated prior to planting the cash crop; however, “planting green” is an alternative approach that allows growers to plant cash crop into an actively growing, green cover crop, which is then terminated after the establishment of the cash crop. The objectives of this study were (1) to determine whether planting soybean (<i>Glycine max</i> L. Merr.) into a standing cereal rye (<i>Secale cereale</i> L.) cover crop provides superior weed suppression compared to terminating cereal rye 2 weeks before soybean planting and (2) to evaluate an integrated effect of herbicide programs and cereal rye termination timing on Palmer amaranth (<i>Amaranthus palmeri</i> S. Watson) control, biomass, seed production, soybean grain yield, and benefit/cost ratio. Field experiments were conducted in southcentral Nebraska from 2020 to 2022. Preemergence (PRE) herbicide with 2 weeks after planting (WAP) termination of cereal rye provided &gt;95% Palmer amaranth control in 2021 and varied from 88% to 98% in 2022 at 28 days after PRE. A PRE herbicide followed by (fb) late-postemergence (LPOST) herbicide with 2 WAP termination of cereal rye controlled <i>Palmer amaranth</i> 85%–92% in 2021 compared with 97%–99% control 28 days after LPOST herbicide application in 2022. Palmer amaranth density was higher with 2 WBP cereal rye termination compared with 2 WAP termination regardless of the herbicide program. PRE fb LPOST herbicide programs integrated with 2 WAP termination of cereal rye reduced Palmer amaranth seed production to less than 9100 seeds plant⁻¹ in 2021 and no seed production in 2022. In 2021, terminating cereal rye 2 WAP played an integral role in controlling and reducing the density of Palmer amaranth; however, it had noticeable impact on soybean yield compared to terminating 2 WBP. In 2022, hail and windstorm had a confounding effect on soybean stand and yield.</p>","PeriodicalId":7567,"journal":{"name":"Agrosystems, Geosciences & Environment","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-05-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/agg2.20507","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140844753","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":"An assessment of agroforestry as a climate-smart practice: Evidences from farmers of northwestern region of Bangladesh","authors":"Md. Manik Ali,&nbsp;Babor Ahmad,&nbsp;Md Shafiqul Bari,&nbsp;Abinash Chandra Pal,&nbsp;Md. Lutfor Rahman,&nbsp;Israt Jahan Sarmin","doi":"10.1002/agg2.20501","DOIUrl":"https://doi.org/10.1002/agg2.20501","url":null,"abstract":"<p>Agroforestry systems have grown significantly in popularity in Bangladesh during recent years due to their favorable effects on the environment and human health. These systems are essential for supporting sustainable agriculture because they increase diversity, improve food security, and provide revenue. This study's main objective is to show how agroforestry is a widely used ecological and climate-resilient practice in Bangladesh. The research explores investment analysis, adoption-influencing factors, and a strength, weakness, opportunities, and threats (SWOT) analysis of agroforestry practices. A total of 340 respondents were chosen for this extensive study using a multistage random selection technique. The results showed a discrepancy in practice, with farmers exhibiting a high degree of awareness but limited application. Financial analysis employing metrics such as benefit-cost ratio, net present value, and internal rate of return favored agroforestry, indicating its economic viability and potential benefits for adopters. Additionally, the adoption of agroforestry was found to be significantly influenced by a binary logistic regression model that highlighted several important features, including larger farm sizes, younger age groups, greater education levels, training experiences, frequent extension visits, and enhanced market access. The study also identified barriers to adoption, such as a lack of trained labor, poor technical assistance, and education. This thorough analysis clarifies the opportunities and constraints for agroforestry implementation in Bangladesh. It suggests broad adoption by means of focused training initiatives that empower farmers, provide observable advantages, and promote nationwide acceptance.</p>","PeriodicalId":7567,"journal":{"name":"Agrosystems, Geosciences & Environment","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/agg2.20501","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140817183","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":"Varietal differences in stem assimilate translocation and lodging resistance of rice under reduced nitrogen input","authors":"Guohui Li,&nbsp;Zijun Yang,&nbsp;Yan Zhang,&nbsp;Cheng Zhou,&nbsp;Chenhui Zhang,&nbsp;Jiwei Xu,&nbsp;Changjin Zhu,&nbsp;Ke Xu","doi":"10.1002/agg2.20510","DOIUrl":"https://doi.org/10.1002/agg2.20510","url":null,"abstract":"<p>The low translocation rate of stem assimilates and lodging under high nitrogen conditions are major factors limiting the realization of the yield potential of rice. The objectives of this study were to (1) determine the characteristics of stem nonstructural carbohydrates (NSCs) translocation and lodging resistance in different types of rice varieties and (2) elucidate the responses of stem NSCs translocation and lodging resistance to reduced nitrogen (RN) input. Field experiments were conducted using four types of rice varieties with two nitrogen levels, including normal nitrogen (NN, namely, farmer's practice, 225 kg N ha⁻¹ for indica conventional and indica hybrid rice and 300 kg N ha⁻¹ for japonica conventional and indica–japonica hybrid rice in Jiangsu Province, China) and 20% RN (180 and 240 kg N ha⁻¹, respectively). The results showed that there were significant differences in the stem NSCs translocation and lodging index of the basal stem among different types of varieties; indica hybrid rice was the highest, followed by indica conventional rice and indica–japonica hybrid rice, while japonica conventional rice was the lowest. The high activities of α-amylase, β-amylase, and sucrose phosphate synthase may contribute to high stem NSCs translocation. Correlation analysis revealed that NSCs translocation was significantly positively correlated with 1000-grain weight, grain yield, and lodging index, while it was significantly negatively correlated with dry weight/length, dry weight/volume, and bending stress of the basal stem. Compared with NN, RN significantly improved NSCs translocation and had no significant effect on the lodging resistance-related traits of the basal stem or grain yield. Therefore, this research indicates that a 20% reduction in nitrogen input can maintain grain yield by enhancing stem assimilate translocation without lodging resistance reduction and consequently synergizing nitrogen reduction, high yield, and lodging resistance.</p>","PeriodicalId":7567,"journal":{"name":"Agrosystems, Geosciences & Environment","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/agg2.20510","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140817182","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":"Long-term soil change in the US Great Plains: An evaluation of the Haas Soil Archive","authors":"Mark A. Liebig,&nbsp;Francisco J. Calderon,&nbsp;Andrea K. Clemensen,&nbsp;Lisa Durso,&nbsp;Jessica L. Duttenhefner,&nbsp;Jed O. Eberly,&nbsp;Jonathan J. Halvorson,&nbsp;Virginia L. Jin,&nbsp;Kyle Mankin,&nbsp;Andrew J. Margenot,&nbsp;Catherine E. Stewart,&nbsp;Scott Van Pelt,&nbsp;Merle F. Vigil","doi":"10.1002/agg2.20502","DOIUrl":"https://doi.org/10.1002/agg2.20502","url":null,"abstract":"<p>Diverse patterns of climate and edaphic factors challenge detection of soil property change in the US Great Plains. Because detectable soil change can take decades, insights into the trajectory of soil properties frequently require long-term site monitoring and, where available, associated soil archives to enable comparisons with initial or baseline states. Unfortunately, few multi-decadal soil change investigations have been conducted in this region. Here, we document effects of dryland cropping on a suite of soil properties by comparing matched historic (1947) and contemporary (2018) soil samples from the Haas Soil Archive at three sites in the US Great Plains: Moccasin, MT, Akron, CO, and Big Spring, TX. Current analytical methods were used to provide insight into changes in soil texture, pH, carbon, and micronutrients at 0- to 15.2-cm and 15.2- to 30.5-cm depths. Changes in direction and magnitude of soil properties over 71 years were site specific. Changes in textural class occurred at all sites, with Moccasin and Akron transitioning from loam to clay loam and Big Spring from sandy clay loam to sandy loam. The soil pH reaction class changed from slightly alkaline to moderately acid at Akron and slightly alkaline to moderately alkaline at Big Spring. At 0–15.2 cm, soil organic carbon decreased by 15% and 36% at Moccasin and Big Spring, respectively, but increased by 15% at Akron. Soil micronutrients generally declined at all sites. Weather-related variables derived from air temperature and precipitation records were not correlated with soil change. Inferred factors contributing to soil change included on-site management, inherent soil features, weather metrics not evaluated, or a combination thereof.</p>","PeriodicalId":7567,"journal":{"name":"Agrosystems, Geosciences & Environment","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-04-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/agg2.20502","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140814302","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":"Cropland soil nitrogen oxide emissions vary with dairy manure incorporation methods","authors":"David J. Miller,&nbsp;Jiajue Chai,&nbsp;Felix Guo,&nbsp;María A. Ponce de León,&nbsp;Rebecca Ryals,&nbsp;Curtis J. Dell,&nbsp;Heather Karsten,&nbsp;Meredith G. Hastings","doi":"10.1002/agg2.20485","DOIUrl":"https://doi.org/10.1002/agg2.20485","url":null,"abstract":"<p>Soils contribute 15%–75% of total atmospheric nitrogen oxide (NO_x) emissions in agricultural regions during the growing season. However, the impacts of cropland fertilizer management on spatially heterogeneous, temporally episodic NO_x emission patterns are highly uncertain. We examine the effects of liquid slurry dairy manure application practices on soil NO_x emissions in rainfed, corn-soybean rotations during spring 2016 and 2017. Daily soil NO_x emissions and weekly soil inorganic N measurements were performed in a randomized split–split plot design for 1–4 weeks following manure applications. NO_x emissions and soil N with shallow-disk injection and chisel-disk manure incorporation methods were compared with unincorporated broadcast practices. Injected manure and chisel-disk incorporation exhibited two–four times larger mean NO_x emissions than those with unincorporated broadcast manure. Larger soil NO_x emissions with manure incorporation practices were driven by the predominance of nitrification in these treatments with evidence of soil nitrate production. Soil NO_x emission differences between treatments were detectable across order of magnitude changes in daily NO_x emissions during two growing seasons. Larger soil NO_x emissions associated with manure incorporation practices compared with unincorporated broadcast practices occur alongside larger N₂O and smaller NH₃ emissions, highlighting important air quality and climate impact tradeoffs for cropland manure fertilizer management choices.</p>","PeriodicalId":7567,"journal":{"name":"Agrosystems, Geosciences & Environment","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-04-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/agg2.20485","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140808185","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":"Soil health cycle","authors":"Bijesh Maharjan,&nbsp;Saurav Das,&nbsp;Vesh R. Thapa,&nbsp;Bharat Sharma Acharya","doi":"10.1002/agg2.20504","DOIUrl":"https://doi.org/10.1002/agg2.20504","url":null,"abstract":"<p>Soil health is pivotal to agricultural sustainability. Promoting and sustaining soil health management is challenging since it involves many interdependent components and steps and is an iterative process. Herein, the soil health cycle (SHC) is proposed as a soil health management cycle encompassing human dimensions, management practices, and their effects on soil health indicators (SHIs), leading to subsequent impacts on soil functions. The SHC provides a structure for an iterative testing of changes to improve soil health. A systematic review of research publications was also conducted using the Web of Science database supplemented by Elicit AI and Scopus API searches to determine the status of research reports connecting SHIs to soil function outcomes, a critical component in the SHC. The review focused on publications from 2000 to 2022 and highlighted that most soil health studies separately report the potential roles of soil health practices such as cover cropping, no-tillage or reduced tillage, crop rotation, and crop–livestock integration in improving SHIs or soil function outcomes such as productivity and sustainability. The confidence in the causality of improved SHIs due to practices can be increased by demonstrably linking them to soil function outcomes such as productivity, environmental quality, and profitability. Presenting such evidence might allow us to tease confounding factors apart and present and contextually recommend soil health practices. It will also affect the human dimension in the SHC through informed and beneficial policies and incentives.</p>","PeriodicalId":7567,"journal":{"name":"Agrosystems, Geosciences & Environment","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-04-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/agg2.20504","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140814193","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":"Higher apical meristem in tall fescue as adaptation strategy to recurring short-term inundation","authors":"Marina Miquilini,&nbsp;Ricardo Henrique Ribeiro,&nbsp;Spencer Bauman,&nbsp;Steve W. Lyon,&nbsp;Marília B. Chiavegato","doi":"10.1002/agg2.20486","DOIUrl":"https://doi.org/10.1002/agg2.20486","url":null,"abstract":"<p>Soil inundation frequency and intensity in the central United States are predicted to increase because of climate change. Soil inundation is expected to negatively affect plant growth and persistency. Our objective was to measure tiller and apical meristem height, leaf area index (LAI), and leaf-to-stem ratio effects on tall fescue (<i>Schedonorus arundinaceus</i> (Schreb.)) under different levels of soil inundation intensity. The study was conducted on a commercial farm in northwestern Ohio, from spring to fall 2021. Three different levels of inundation were observed and assigned as treatments: no inundation, low inundation (LI), and high inundation (HI). LI and HI were defined by the duration on which the soil was inundated after heavy rain events: 1–2 and 3–5 days after rain, respectively. Meristem and tiller height were higher during spring (<i>p</i> &lt; 0.001), and lower in late summer across treatments (<i>p</i> &lt; 0.001). The higher LAI and leaf-to-stem ratio occurred in spring, probably due to higher leaf mass (<i>p</i> &lt; 0.001). As seasons progressed, plant and meristem height, LAI, and leaf mass decreased (<i>p</i> &lt; 0.001). Despite not being considered an inundation-tolerant species, tall fescue showed morphological adaptation to the inundation levels of our study, suggesting that this species can be used to manage fields prone to short-term inundation.</p>","PeriodicalId":7567,"journal":{"name":"Agrosystems, Geosciences & Environment","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/agg2.20486","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140633748","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":"Quinoa growth and yield performance under salinity stress in arid West Texas","authors":"Vijayasatya N. Chaganti,&nbsp;Girisha K. Ganjegunte","doi":"10.1002/agg2.20493","DOIUrl":"https://doi.org/10.1002/agg2.20493","url":null,"abstract":"<p>Crops such as quinoa (<i>Chenopodium quinoa</i> Willd.) that are both salinity and drought-tolerant and with high seed value are needed to sustain agriculture in arid Far West Texas facing dual threat of freshwater scarcity and soil salinization. However, quinoa's growth and yield performance under arid conditions of Far West Texas has not been studied previously. This study evaluated growth and yield of a salt-tolerant quinoa genotype under greenhouse conditions using a completely randomized experimental design with irrigation water salinity as the main factor having five different levels (freshwater, 5, 10, 15, and 20 dS m⁻¹). Plant parameters (plant height, leaf SPAD, leaf tissue carbon, and nitrogen concentrations) and seed yield were measured for two growing seasons. Soil quality (salinity and sodicity) changes were also determined for the same time. Seed yields ranged between 747 and 6065 kg ha⁻¹ across 2 years, indicating significant effects of water salinity. However, these yields were comparable to those reported in the literature. Increasing water salinity significantly affected all growth parameters with leaf C and N decreasing by an average of 20%, whereas reductions in plant height reached a high of 60% at 20 dS m⁻¹. Similar reductions in leaf chlorophyll content were found with increasing water salinity. Soil salinity and sodicity significantly increased over time with irrigation water salinity. Importantly, we observed that quinoa has a much higher soil salinity threshold (∼12 dS m⁻¹) above which yields declined rapidly. Higher salt tolerance threshold of quinoa makes it an alternative economically viable crop for the Trans-Pecos Texas region.</p>","PeriodicalId":7567,"journal":{"name":"Agrosystems, Geosciences & Environment","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/agg2.20493","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140633658","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}