Approaches to Management of Anthropogenic Eutrophication Caused by Loading from Mineral Fertilizers

Минакова, Е. А.; Shlichkov, A. P.; Arinina, A. V.

doi:10.1088/1755-1315/272/3/032006

Cited by 2 publications

(1 citation statement)

References 5 publications

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“…The impact of fertilization on soil properties varies depending on fertilizer type and its composition [ 18 ]. Simple compounds in chemical fertilizers leads to significant increase of crop yields, but also might increase the risk of eutrophication, soil acidification, and decrease microbial biomass, biomass carbon, and microbial respiration [ 19 , 20 ]. Contrary to that, the nutrients in organic fertilizers are released by microbial activity over a longer period [ 21 ].…”

Section: Introductionmentioning

confidence: 99%

Soil microbial communities following 20 years of fertilization and crop rotation practices in the Czech Republic

Kracmarova

Uhlík

Strejcek

et al. 2022

Environmental Microbiome

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Background Although fertilization and crop rotation practices are commonly used worldwide in agriculture to maximize crop yields, their long-term effect on the structures of soil microorganisms is still poorly understood. This study investigated the long-term impact of fertilization and crop rotation on soil microbial diversity and the microbial community structure in four different locations with three soil types. Since 1996, manure (MF; 330 kg N/ha), sewage sludge (SF; 330 and SF3x; 990 kg N/ha), and NPK (NPK; 330 kg N/ha) fertilizers were periodically applied to the soils classified as chernozem, luvisol and cambisol, which are among the most abundant or fertile soils used for agricultural purposes in the world. In these soils, potato (Solanum tuberosum L.), winter wheat (Triticum aestivum L.), and spring barley (Hordeum vulgare L.) were rotated every three years. Results Soil chemistry, which was significantly associated with location, fertilization, crop rotation, and the interaction of fertilization and location, was the dominant driver of soil microbial communities, both prokaryotic and fungal. A direct effect of long-term crop rotation and fertilization on the structure of their communities was confirmed, although there was no evidence of their influence on microbial diversity. Fungal and bacterial communities responded differently to fertilization treatments; prokaryotic communities were only significantly different from the control soil (CF) in soils treated with MF and SF3x, while fungal communities differed across all treatments. Indicator genera were identified for different treatments. These taxa were either specific for their decomposition activities or fungal plant pathogens. Sequential rotation of the three crops restricted the growth of several of the indicator plant pathogens. Conclusions Long-term fertilization and crop rotation significantly altered microbial community structure in the soil. While fertilization affected soil microorganisms mainly through changes in nutrient profile, crop rotations lead to the attraction and repulsion of specific plant pathogens. Such changes in soil microbial communities need to be considered when planning soil management.

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Section: Introductionmentioning

confidence: 99%

Soil microbial communities following 20 years of fertilization and crop rotation practices in the Czech Republic

Kracmarova

Uhlík

Strejcek

et al. 2022

Environmental Microbiome

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The dominant mechanisms of nutrient cycling in high-dam reservoirs: retention, transport or transformation?

Wu,

Li,

et al. 2024

Environ. Res. Lett.

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High-dam reservoirs can significantly affect nutrient cycling processes across the globe. However, the research community now has two contradictive views (i.e., retention versus transformation) about the impact of high-dam reservoirs on nutrient cycling due to incomplete information obtained from limited field samplings. To resolve this issue, we develop a physically-based, three-dimensional water quality model to examine the spatiotemporal distributions of biogenic elements (nitrogen and phosphorus) in high-dam reservoirs with high spatial and temporal details. We apply the model to the Xiaowan Reservoir, a representative high-dam reservoir in the Lancang River Basin. By scrutinizing the spatiotemporal distributions of biogenic elements across space and over time, we find a unique “retention-transformation-transportation” process of nitrogen and phosphorus in the high-dam reservoir, with dominant transformation occurring in the water zone before the dam during non-flood period while dominant retention occurring in the middle part of a reservoir during flood period. We further find that transformations of biogenic elements are enhanced only in low-temperature and low-oxygen environments. Our findings show solid scientific basis to resolve the contradictive views about nutrient cycling mechanisms in high-dam reservoirs, and provide important policy implications for the operation of high-dam reservoirs to achieve improved water quality while maintaining clean energy supply.

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Approaches to Management of Anthropogenic Eutrophication Caused by Loading from Mineral Fertilizers

Cited by 2 publications

References 5 publications

Soil microbial communities following 20 years of fertilization and crop rotation practices in the Czech Republic

Soil microbial communities following 20 years of fertilization and crop rotation practices in the Czech Republic

The dominant mechanisms of nutrient cycling in high-dam reservoirs: retention, transport or transformation?

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