The LTAR Cropland Common Experiment in the Lower Mississippi River Basin

IF 2.2 4区 环境科学与生态学 Q3 ENVIRONMENTAL SCIENCES Journal of environmental quality Pub Date : 2024-05-30 DOI:10.1002/jeq2.20577
Martin A. Locke, Lindsey M. Witthaus, Richard E. Lizotte, Lucas J. Heintzman, Matthew T. Moore, Andrew O'Reilly, Robert R. Wells, Eddy J. Langendoen, Ronald L. Bingner, Drew M. Gholson, Jason M. Taylor, Frank E. Johnson II
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Abstract

The Lower Mississippi River Basin Long-Term Agroecosystem Research Site (LMRB-LTAR) encompasses six states from Missouri to the Gulf of Mexico and is coordinated by the USDA-ARS National Sedimentation Laboratory, Oxford, MS. The overarching goal of LTAR is to assess regionally diverse and geographically scalable farming practices for enhanced sustainability of agroecosystem goods and services under changing environment and resource-use conditions. The LMRB-LTAR overall goal is to assess sustainable row crop agricultural production systems that integrate regional environmental and socioeconomic needs. Primary row crops in the region include soybeans, corn, cotton, rice, and sugarcane with crop rotations influenced by commodity crop price and other factors. The field-scale common experiment (CE) includes four row crop farms (26–101 ha) established in 2021 and 2023. Three fields are managed with alternative practices, including reduced tillage, cover crops, and automated prescription irrigation, and three fields are managed with prevailing farming practices, consisting of conventional tillage, no cover crop, and nonprescription irrigation. Treatment effects on crop productivity, soil quality, water use efficiency, water quality, and carbon storage are assessed. Research from the LMRB CE will deliver outcomes linked to overarching LTAR network goals, including innovative agricultural systems, strengthened partnerships, data management technologies, and precision environmental tools.

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密西西比河下游流域 LTAR 耕地共同试验。
密西西比河下游流域--长期农业生态系统研究基地(LMRB-LTAR)包括从密苏里州到墨西哥湾的六个州,由位于密西西比州牛津市的美国农业部-农业科学研究院国家沉积实验室负责协调。LTAR 的总体目标是评估区域多样性和地域可扩展性的耕作方法,以在不断变化的环境和资源使用条件下提高农业生态系统产品和服务的可持续性。LMRB-LTAR 的总体目标是评估整合区域环境和社会经济需求的可持续连作农业生产系统。该地区的主要种植作物包括大豆、玉米、棉花、水稻和甘蔗,作物轮作受商品作物价格和其他因素的影响。田间规模的共同试验 (CE) 包括 2021 年和 2023 年建立的四个行作物农场(26-101 公顷)。三块田采用替代方法管理,包括减少耕作、覆盖作物和自动处方灌溉;三块田采用现行耕作方法管理,包括传统耕作、无覆盖作物和非处方灌溉。对处理方法对作物生产力、土壤质量、水利用效率、水质和碳储存的影响进行评估。LMRB CE 的研究将取得与 LTAR 网络总体目标相关的成果,包括创新农业系统、加强合作伙伴关系、数据管理技术和精确环境工具。
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来源期刊
Journal of environmental quality
Journal of environmental quality 环境科学-环境科学
CiteScore
4.90
自引率
8.30%
发文量
123
审稿时长
3 months
期刊介绍: Articles in JEQ cover various aspects of anthropogenic impacts on the environment, including agricultural, terrestrial, atmospheric, and aquatic systems, with emphasis on the understanding of underlying processes. To be acceptable for consideration in JEQ, a manuscript must make a significant contribution to the advancement of knowledge or toward a better understanding of existing concepts. The study should define principles of broad applicability, be related to problems over a sizable geographic area, or be of potential interest to a representative number of scientists. Emphasis is given to the understanding of underlying processes rather than to monitoring. Contributions are accepted from all disciplines for consideration by the editorial board. Manuscripts may be volunteered, invited, or coordinated as a special section or symposium.
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