Soluble organic nitrogen cycling in soils after application of chemical/organic amendments and groundwater pollution implications

Wang, Leyun; Zheng, Xilai; Tian, Fei; Xin, Jia; Nai, Hui

doi:10.1016/j.jconhyd.2018.08.003

Cited by 21 publications

(3 citation statements)

References 66 publications

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“…They concluded that the main sources of agricultural land pollution are manure, fertilizers and sewage. Groundwater pollution has been analyzed because it is considered a necessary resource for the economic and social development of a country [36,37]. The authors [38] observed the quantitative indicators of drought tolerance of bread wheat in Iran, and with the application of the PCA method they managed to reduce the number of these indicators.…”

Section: Commentmentioning

confidence: 99%

Principal Component Analysis of Selected Indicators of Wheat in European Countries

Grujić Vučkovski,

Marina,

Ćurčić

2024

Preprint

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For this research we are selected three indicators of wheat: yield (t/ha), producer price (USD/t) and share of the harvested area under wheat in relation to the total land area of country (%). The mentioned indicators were analyzed for the period 2006-2021 in thirty-two European countries. The purpose of the research is to determine which of the mentioned indicators achieve average annual growth/decrease rates, what is the correlation between them, how European countries are grouped with their similarities and differences. The research examines the impact of the COVID-19 pandemic on the mentioned indicators in a two time phases: Phase I, before the pandemic (2006-2019); Phase II, during the pandemic (2020-2021). The methodological approach to the research topic involved the application of descriptive statistics, as the method of principal components analysis (abbr. PCA) with graphics. A positive correlation exists only between the yield of wheat and the share of the harvested area under wheat in the total area of the land (0.291). PCA method showed that countries are grouped differently depending on the observed indicator and the analyzed time phase.

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Section: Commentmentioning

confidence: 99%

Principal Component Analysis of Selected Indicators of Wheat in European Countries

Grujić Vučkovski,

Marina,

Ćurčić

2024

Preprint

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“…It also means that nitrogen fertilization ought to be adjusted to the soil-climate conditions of the specific site-a single recommendation about the dose of mineral nitrogen cannot be applied nationwide. This knowledge can thus save the farmer's financial resources, the number of field operations, and the environment, as the excess of mineral nitrogen fertilizers applied to agricultural land is associated with negative impacts on soil nitrogen pool [24], leaching, and groundwater nitrate contamination [25,26]. Focused on the soil properties, application of mineral nitrogen significantly decreased the pH in Caslav, while no changes were recorded in Ivanovice and Lukavec (Tables 8-10).…”

Section: The Effect Of Mineral Nmentioning

confidence: 99%

The Development of Winter Wheat Yield and Quality under Different Fertilizer Regimes and Soil-Climatic Conditions in the Czech Republic

Hlísníkovský¹,

Menšík²,

Kunzová³

2020

Agronomy

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Farmers must adapt to the changes brought about by the changing climate and market requirements. These adaptations are associated with fertilization—the availability of organic manures and mineral fertilizers and crop rotations. What is the effect of organic manures on wheat and soil? Is it necessary to apply mineral phosphorus P and potassium (K) fertilizers to the wheat? These questions are frequently asked in workshops in different growing areas. To provide a relevant answer on this issue, we evaluated how farmyard manure (FYM), mineral nitrogen (N) applied without phosphorus (P) and potassium (K) fertilizers, and application of NPK affected grain yield, grain quality, and soil properties under different soil-climate conditions (Ivanovice—Chernozem, Caslav—Phaeozem, Lukavec—Cambisol) between 2015 and 2018. The FYM significantly increased grain yield even after three years since being applied and incorporated into the soil in all localities, but its application didnot affect grain quality. In the soil, the FYM significantly increased total nitrogen Nt, P, and K content in all localities and oxidable carbon Cox content in two localities. Mineral nitrogen significantly affected grain yield and quality and increased concentrations of soil N and C, but decreased pH in Caslav. Application of mineral P and K wasnot connected with a positive effect on grain yield and quality, but increased the concentration of these elements in the soil, preventing depletion of these elements from the soil. Maximal yields were recorded when 70–98 kg N ha−1 was applied in Ivanovice, 55–72 kg N ha−1 in Caslav, and 155 kg N ha−1 in Lukavec.

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“…Bai et al [32] reported that chemical fertilizer combined with straw return increased the contribution of applied N to MBN, PON, and MTN compared with chemical fertilizer alone. Wang et al [33] found that application of organic materials greatly increased the concentration of DON in comparison with chemical fertilizer applications. Overall, these studies have focused mainly on changes in the distribution of applied N in soils without plants with equivalent N rates.…”

Section: Introductionmentioning

confidence: 99%

Changes in Nitrogen Pools in the Maize–Soil System after Urea or Straw Application to a Typical Intensive Agricultural Soil: A 15N Tracer Study

Zhang

Wei

et al. 2021

Agronomy

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A maize pot experiment was conducted to compare the difference of N distribution between bulk and rhizospheric soil after chemical fertilizer with or without soil straw amendment at an equivalent N rate using a 15N cross-labeling technique. Soil N pools, maize N and their 15N abundances were determined during maize growth. The urea plus straw treatment significantly (p < 0.05) increased the recovery of urea N in soil and 26.0% of straw N was assimilated by maize. Compared with urea treatment in bulk soil, urea plus straw treatment significantly (p < 0.05) increased the concentration and percentage of applied N as dissolved organic N (DON) and microbial biomass N (MBN) from milk stage to maturity, increased those as particulate organic N (PON) and mineral associated total N (MTN) throughout maize growth and decreased those as inorganic N (Inorg-N) from the eighth leaf to the silking stage. Compared with bulk soil, rhizospheric soil significantly (p < 0.05) decreased the concentration and percentage of applied N as PON and increased those as Inorg-N and MTN in both applied N treatments from the silking stage, and significantly (p < 0.05) decreased the concentration and percentage of applied N as microbial biomass N (MBN) in the urea plus straw treatment. Overall, straw N was an important N source and combined application of chemical fertilizer with straw increased soil fertility, with the rhizosphere regulating the transformation and supply of different N sources in the soil–crop system.

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Soluble organic nitrogen cycling in soils after application of chemical/organic amendments and groundwater pollution implications

Cited by 21 publications

References 66 publications

Principal Component Analysis of Selected Indicators of Wheat in European Countries

Principal Component Analysis of Selected Indicators of Wheat in European Countries

The Development of Winter Wheat Yield and Quality under Different Fertilizer Regimes and Soil-Climatic Conditions in the Czech Republic

Changes in Nitrogen Pools in the Maize–Soil System after Urea or Straw Application to a Typical Intensive Agricultural Soil: A 15N Tracer Study

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