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Nitrogen, Volume 6, Issue 2

June 2025 - 28 articles

Cover Story: Nitrogen dioxide (NO2) is a major urban air pollutant linked to traffic, heating, and industrial activities, posing serious risks to human health and ecosystems. In Spain, cities like Madrid, Barcelona, and Valencia report high exposure levels, often surpassing recommended limits. Satellite-based technologies, such as Sentinel-5P TROPOMI, are increasingly used to monitor NO2 from space, offering broader coverage than ground stations. In this study, we compare satellite and in situ NO2 data in these three cities, exploring how weather patterns and ozone influence urban pollution. Understanding these dynamics may support better air quality assessment in these and other under-monitored areas. View this paper
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Articles (28)

  • Article
  • Open Access
1 Citations
1,110 Views
16 Pages

Water scarcity is a global crisis and of particular concern in arid regions like Morocco. One creative solution is mining unusual water sources, such as landfill leachate. The presence of nitrogen in the sediment was studied as part of the use of sug...

  • Article
  • Open Access
4 Citations
1,731 Views
20 Pages

Optimizing Nitrogen Management for Sustainable Wheat Production in Semi-Arid Subtropical Environments: Impact on Growth, Physio-Biochemical, and Yield Attributes

  • Barira Shoukat Hafiza,
  • Wajid Ishaque,
  • Muhammad Akhtar,
  • Muhammad Yousaf Shani,
  • M. Azmat,
  • William L. Bauerle,
  • Mehdi Rahimi and
  • Muhammad Yasin Ashraf

Nitrogen fertilization plays a critical role in promoting plant growth, improving physiological and biochemical traits, and enhancing wheat productivity. This study aimed to evaluate the effects of seven nitrogen (N) doses—0, 45, 90, 135, 180,...

  • Article
  • Open Access
956 Views
14 Pages

Variation in Leaf C, N, and P Stoichiometric Characteristics of Populus euphratica Communities in a Desert Riparian Ecosystem of Northwest China

  • Xiaolong Zhang,
  • Xianmeng Liu,
  • Lijiang Shi,
  • Yinbo Zhang,
  • Jingwei Wang,
  • Feng Gao,
  • Hao Qin,
  • Min Shi,
  • Yongji Wang and
  • Yuanrun Zheng

Despite extensive research on how climate and environmental factors influence leaf stoichiometry at national and global scales, experimental evidence on their effects at the community level remains limited, particularly in extremely arid regions. Her...

  • Review
  • Open Access
4 Citations
3,231 Views
30 Pages

Rice is a major crop for half of the world’s population, and nitrogen (N) fertilizers play a crucial role in its production. However, imbalanced N fertilizer uses and traditional fertilization practices have led to low nitrogen use efficiency (...

  • Article
  • Open Access
1 Citations
1,319 Views
22 Pages

Rosemary (Salvia rosmarinus L.) is a versatile and resilient plant with significant culinary, medicinal, and ecological value. This study evaluates the impact of four nitrogen (N) fertilization levels (0, 50, 100, and 150 kg N ha⁻¹) on the...

  • Article
  • Open Access
3 Citations
1,473 Views
19 Pages

Linking Satellite and Ground Observations of NO2 in Spanish Cities: Influence of Meteorology and O3

  • Carlos Morillas,
  • Sergio Álvarez,
  • José C. M. Pires,
  • Adrián Jesús García and
  • Sara Martínez

In Spain, several major cities face high rates of avoidable deaths due to NO2 exposure. Understanding NO2 atmospheric dynamics is essential to support public health efforts and policymaking. Recent satellite products have proven useful in characteriz...

  • Review
  • Open Access
12 Citations
3,310 Views
33 Pages

Biochar Characteristics and Application: Effects on Soil Ecosystem Services and Nutrient Dynamics for Enhanced Crop Yields

  • Ojone Anyebe,
  • Fatihu Kabir Sadiq,
  • Bonface Ombasa Manono and
  • Tiroyaone Albertinah Matsika

Although intensive farming practices have greatly increased food production, they have undermined the soil ecosystem services on which agriculture depends. Biochar application in soils is increasingly gaining worldwide acceptance as a means of addres...

  • Article
  • Open Access
918 Views
21 Pages

Wheat requires a high quantity of nitrogen to grow efficiently and produce a high number of nutritious grains (=high yield). The consequences of fertilizer use in uncontrolled conditions are well known, e.g., nitrogen leakage leading to impacts on ec...

  • Article
  • Open Access
1 Citations
1,523 Views
19 Pages

Data-Driven and Mechanistic Soil Modeling for Precision Fertilization Management in Cotton

  • Miltiadis Iatrou,
  • Panagiotis Tziachris,
  • Fotis Bilias,
  • Panagiotis Kekelis,
  • Christos Pavlakis,
  • Aphrodite Theofilidou,
  • Ioannis Papadopoulos,
  • Georgios Strouthopoulos,
  • Georgios Giannopoulos and
  • Dimitrios Arampatzis
  • + 4 authors

This study introduces a novel methodology for predicting cotton yield by integrating machine learning (ML) with mechanistic soil modeling. This hybrid approach enhances yield prediction by combining data-driven ML techniques with soil process modelin...

  • Article
  • Open Access
786 Views
11 Pages

Recovery of Beef Cattle Manure Nitrogen in a Long-Term Winter Wheat Fertility Study

  • Raedan Sharry,
  • Daryl Brian Arnall,
  • Steve Phillips and
  • Joao Bigatao Souza

Beef-cattle manure (BCM) can be an effective source of nitrogen (N) for crop production. However, N availability from manure can be difficult to quantify across varying environments. The Magruder Plots are a continuous winter wheat (Triticum aes...

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Nitrogen - ISSN 2504-3129