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Agronomy
Special Issues
Keeping Nutrients in the Soil: The Challenges, Benefits and Trade-Offs
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Keeping Nutrients in the Soil: The Challenges, Benefits and Trade-Offs

A special issue of Agronomy (ISSN 2073-4395). This special issue belongs to the section "Farming Sustainability".

Deadline for manuscript submissions: 30 November 2024 | Viewed by 1581

Special Issue Editors

Prof. Dr. Shuangyi Li

E-Mail Website
Guest Editor
College of Land and Environment, Shenyang Agricultural University, Shenyang 110866, China
Interests: soil structure; soil carbon and nitrogen cycle
Dr. Yalong Liu

E-Mail Website
Guest Editor
College of Land and Environment, Shenyang Agricultural University, Shenyang 110866, China
Interests: soil organic carbon; paddy soil; soil microorganisms

Special Issue Information

Dear Colleagues,

Soil is the foundation of agriculture, and the nutrient utilization efficiency of lower soil is becoming one of the most significant obstacles to sustainable agricultural production. For example, the overuse of chemical fertilizers has reduced their efficiency, caused an imbalance in soil nutrients, increased soil acidification and secondary salinization, and deteriorated soil structure. Therefore, there is a need to strengthen scientific fertilization, improve the utilization efficiency of fertilizers, implement scientifically founded crop rotation systems, and establish a circular economy-based agricultural system.

This Special Issue welcomes original and review articles in the following areas:

  1. Soil nutrient cycling and soil health;
  2. The efficient utilization of soil nutrients and fertilizers;
  3. Crop soil and water resources’ utilization and conservation;
  4. Benefit evaluations for balanced fertilization and organic substitutions for chemical fertilizers;
  5. Nutrient utilization efficiency in crop rotation systems;
  6. Products and technologies for increasing nutrient efficiency;
  7. Soil microbial diversity and its function;
  8. The crop yield and efficiency mechanisms in the synergistic application of water and fertilizer;
  9. Sustainable utilization technology for soil to facilitate agriculture;
  10. Evaluations of soil quality in organic agriculture.

Prof. Dr. Shuangyi Li
Dr. Yalong Liu
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Agronomy is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • soil
  • nutrients
  • benefits
  • health
  • fertilization
  • agriculture

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Published Papers (2 papers)

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Research

16 pages, 859 KiB  
Article
Effect of Green Cowpea Manure on the Quality Properties of Sandy Soils Under the Specific Conditions of the Dry Climate in Romania
by Reta Drăghici, Ștefan Nanu, Aurelia Diaconu, Cristina Bîrsoghe, Florentina Netcu, Alina Nicoleta Paraschiv and Milica Dima
Agronomy 2024, 14(11), 2474; https://doi.org/10.3390/agronomy14112474 - 23 Oct 2024
Viewed by 563
Abstract
This study was carried out on the rotation of cowpea-rye + cowpea in successive crops for green manure-sorghum grains, with the objective of increasing the fertility of sandy soils by incorporating green cowpea manure into the soil in combination with chemical fertilization with [...] Read more.
This study was carried out on the rotation of cowpea-rye + cowpea in successive crops for green manure-sorghum grains, with the objective of increasing the fertility of sandy soils by incorporating green cowpea manure into the soil in combination with chemical fertilization with NPK. In this sense, after harvesting the rye plant, the cowpea was sown, which was then incorporated into the soil during the formation of the beans in the pod. Before incorporating the cowpea biomass into the soil, the initial fertility status of the soil was assessed, and in the spring, the soil was sown with sorghum grain in two fertilization variants (N80P80K80 and N150P80K80). The soil chemical analyses carried out at the end of the vegetation cycle of the sorghum plant showed that by incorporating 52.4 t/ha green cowpea biomass (9.24 t/ha dry biomass), the quality properties of the soil were significantly improved, with annual increases of 0.17–0.29 g/kg in total nitrogen, 9.5–13.33 mg/kg in extractable phosphorus, 11.33–24 mg/kg in exchangeable potassium, and 0.08–0.12 g/kg in organic carbon, also depending on the sorghum fertilization system. It has also been shown to reduce the acidity of the soil pH and improve the water holding capacity of the soil. Full article
(This article belongs to the Special Issue Keeping Nutrients in the Soil: The Challenges, Benefits and Trade-Offs)
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15 pages, 1842 KiB  
Article
Straw Returning Alleviates the Inhibition of Soil Nitrification Medicated by Ammonia-Oxidizing Archaea under Low Nitrogen Fertilization
by Feng Wang, Xiaolong Liang, Minjie Liang, Bingqing Guo, Shuangyi Li, Lingzhi Liu and Jingkuan Wang
Agronomy 2024, 14(7), 1550; https://doi.org/10.3390/agronomy14071550 - 17 Jul 2024
Viewed by 657
Abstract
Straw returning may stimulate soil microbial activity, thereby influencing microbial-mediated soil nitrification, which can lead to nitrate leaching and nitrogen (N) loss. However, its effects under long-term nitrogen fertilization remain unclear. At an experimental station with 34 years of fertilizer application (0, 135, [...] Read more.
Straw returning may stimulate soil microbial activity, thereby influencing microbial-mediated soil nitrification, which can lead to nitrate leaching and nitrogen (N) loss. However, its effects under long-term nitrogen fertilization remain unclear. At an experimental station with 34 years of fertilizer application (0, 135, and 270 kg ha−1 N), we investigated how nitrogen fertilization and straw returning affected the soil potential nitrification rate (PNR) and ammonia-oxidizing microorganisms (AOM). Our results suggest that N fertilization concurrently inhibits soil PNR, but this inhibition can be alleviated by straw returning, particularly with low nitrogen fertilization (p < 0.05). Long-term N fertilization significantly decreased the abundance of ammonia-oxidizing archaea (AOA), ammonia-oxidizing bacteria (AOB), and complete ammonia-oxidizing bacteria cladeB (CAOB-cladeB). Straw returning increased AOA abundance and diversity, especially with low or no fertilization (p < 0.05). Furthermore, the partial least squares path model demonstrated that AOA abundance affected soil PNR by altering the AOA community. According to random forest analysis, soil pH and AOA beta diversity were the primary factors affecting soil PNR (explaining 10.76% and 10.03% of the variation, respectively). Overall, our findings highlight the importance of straw returning and AOA in soil nitrification under long-term nitrogen fertilization, emphasizing the need to consider these interactions for sustainable agriculture. Full article
(This article belongs to the Special Issue Keeping Nutrients in the Soil: The Challenges, Benefits and Trade-Offs)
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