Jacob P. Rix, Tsz Him Lo, Drew M. Gholson, G. Dave Spencer, Gurbir Singh
{"title":"保护措施对亚祖-密西西比三角洲旱作玉米产量、沟水入渗和表层密封壤土土壤湿度的影响","authors":"Jacob P. Rix, Tsz Him Lo, Drew M. Gholson, G. Dave Spencer, Gurbir Singh","doi":"10.1002/saj2.20595","DOIUrl":null,"url":null,"abstract":"Abstract Decades of intense tillage have created the problem of surface sealing in loam soils across the Mid‐South USA and beyond. These soils exhibit low organic matter, poor soil aggregate stability, and ultimately low infiltration rates that decrease rainfed crop productivity and increase irrigation water demand. This research quantified the effects of soil management practices on rainfed maize ( Zea mays L.) yield, furrow water infiltration, and soil moisture in Commerce very fine sandy loam and silt loam near Stoneville, Mississippi, USA. The six treatments included conventional tillage (CT), cereal rye (CR; Secale cereale ), furrow diking (FD), no‐till (NT), polyacrylamide (PAM), and subsoiling (SS). No other treatment achieved a significantly higher maize grain yield than the CT control treatment in both years consistently. Single‐ring infiltrometer results indicated no significant differences between CT, CR, PAM, and SS in 2022 and between CT and NT in 2021. Neutron attenuation found that total soil water within the top 1 m was not significantly different among CT, FD, and SS on any of the eight measurement dates throughout the 2022 maize reproductive period. However, soil moisture was numerically lower for FD in the late reproductive stages. These findings suggest that environmental factors and other agronomic operations may counteract conservation practices, limiting their effectiveness at reducing irrigation requirements to mitigate groundwater depletion in the Mississippi River Valley Alluvial Aquifer. This article is protected by copyright. All rights reserved","PeriodicalId":22142,"journal":{"name":"Soil Science Society of America Journal","volume":null,"pages":null},"PeriodicalIF":2.4000,"publicationDate":"2023-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Effects of conservation practices on rainfed maize yield, furrow water infiltration, and soil moisture for surface sealing loam soils in the Yazoo‐Mississippi Delta\",\"authors\":\"Jacob P. Rix, Tsz Him Lo, Drew M. Gholson, G. Dave Spencer, Gurbir Singh\",\"doi\":\"10.1002/saj2.20595\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"Abstract Decades of intense tillage have created the problem of surface sealing in loam soils across the Mid‐South USA and beyond. These soils exhibit low organic matter, poor soil aggregate stability, and ultimately low infiltration rates that decrease rainfed crop productivity and increase irrigation water demand. This research quantified the effects of soil management practices on rainfed maize ( Zea mays L.) yield, furrow water infiltration, and soil moisture in Commerce very fine sandy loam and silt loam near Stoneville, Mississippi, USA. The six treatments included conventional tillage (CT), cereal rye (CR; Secale cereale ), furrow diking (FD), no‐till (NT), polyacrylamide (PAM), and subsoiling (SS). No other treatment achieved a significantly higher maize grain yield than the CT control treatment in both years consistently. Single‐ring infiltrometer results indicated no significant differences between CT, CR, PAM, and SS in 2022 and between CT and NT in 2021. Neutron attenuation found that total soil water within the top 1 m was not significantly different among CT, FD, and SS on any of the eight measurement dates throughout the 2022 maize reproductive period. However, soil moisture was numerically lower for FD in the late reproductive stages. These findings suggest that environmental factors and other agronomic operations may counteract conservation practices, limiting their effectiveness at reducing irrigation requirements to mitigate groundwater depletion in the Mississippi River Valley Alluvial Aquifer. This article is protected by copyright. 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Effects of conservation practices on rainfed maize yield, furrow water infiltration, and soil moisture for surface sealing loam soils in the Yazoo‐Mississippi Delta
Abstract Decades of intense tillage have created the problem of surface sealing in loam soils across the Mid‐South USA and beyond. These soils exhibit low organic matter, poor soil aggregate stability, and ultimately low infiltration rates that decrease rainfed crop productivity and increase irrigation water demand. This research quantified the effects of soil management practices on rainfed maize ( Zea mays L.) yield, furrow water infiltration, and soil moisture in Commerce very fine sandy loam and silt loam near Stoneville, Mississippi, USA. The six treatments included conventional tillage (CT), cereal rye (CR; Secale cereale ), furrow diking (FD), no‐till (NT), polyacrylamide (PAM), and subsoiling (SS). No other treatment achieved a significantly higher maize grain yield than the CT control treatment in both years consistently. Single‐ring infiltrometer results indicated no significant differences between CT, CR, PAM, and SS in 2022 and between CT and NT in 2021. Neutron attenuation found that total soil water within the top 1 m was not significantly different among CT, FD, and SS on any of the eight measurement dates throughout the 2022 maize reproductive period. However, soil moisture was numerically lower for FD in the late reproductive stages. These findings suggest that environmental factors and other agronomic operations may counteract conservation practices, limiting their effectiveness at reducing irrigation requirements to mitigate groundwater depletion in the Mississippi River Valley Alluvial Aquifer. This article is protected by copyright. All rights reserved
期刊介绍:
SSSA Journal publishes content on soil physics; hydrology; soil chemistry; soil biology; soil biochemistry; soil fertility; plant nutrition; pedology; soil and water conservation and management; forest, range, and wildland soils; soil and plant analysis; soil mineralogy, wetland soils. The audience is researchers, students, soil scientists, hydrologists, pedologist, geologists, agronomists, arborists, ecologists, engineers, certified practitioners, soil microbiologists, and environmentalists.
The journal publishes original research, issue papers, reviews, notes, comments and letters to the editor, and book reviews. Invitational papers may be published in the journal if accepted by the editorial board.