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Nitrogen, Volume 6, Issue 1

2025 March - 19 articles

Cover Story: Nitrogen is essential for soil fertility. Global population has significantly increased from last decades, which resulted in initiative of Green Revolution in 1960 for high yield production per capita. Chemical nitrogen is applied to boost the nitrogen deficient soil for tree growth and crop production, which lately being miscalculated. Discriminate use of chemical N fertilizer alters soil physicochemical properties and nitrogen-transforming microbial activity, resulting in not only a decrease in gross production but also the loss of available nitrogen as greenhouse gases (N2O and NO) emissions that are known to contribute to climate change. In the present study, we focus on the selection of the best chemical N fertilizer to enhance sustainable and eco-friendly productivity. Ameer et al. (Jilin Agricultural University). View this paper
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Articles (19)

  • Article
  • Open Access
5 Citations
2,423 Views
13 Pages

Assessment of Spring Oat Nitrogen Supply Based on Plant Sap Nitrate Concentration and SPAD Values

  • Rita Kremper,
  • Evelin Kármen Juhász,
  • Tibor Novák,
  • Ida Kincses,
  • Zsolt Sándor,
  • Magdolna Tállai,
  • Áron Béni,
  • Anita Szabó,
  • Szabolcs Szarvas and
  • Andrea Balla Kovács

The development of critical levels for sap nitrate and chlorophyll meter reading (SPAD test) in the case of various crops is of great importance for growers in characterizing a plant’s N status. A field experiment with spring oat (Avena sativa...

  • Article
  • Open Access
3 Citations
3,214 Views
17 Pages

Excessive irrigation in protected vegetable production often results in soil nutrient loss and groundwater contamination. Cucumber (Cucumis sativus L.) is a widely cultivated and important vegetable in the world and a sensitive plant to irrigation wa...

  • Article
  • Open Access
2 Citations
1,665 Views
10 Pages

An experiment was conducted in spring 2024 to investigate the effects of biochar, biogas slurry, and dicyandiamide (DCD) on N2O emissions from soil in protected tomato cultivation. Five treatments were applied: conventional fertilization (CK1), bioga...

  • Review
  • Open Access
57 Citations
11,418 Views
28 Pages

Nitrogen, an essential element for plant growth and food production, presents significant challenges in agriculture due to the environmental consequences of synthetic nitrogen fertilizers. This review explores the potential of nitrogen-fixing cyanoba...

  • Article
  • Open Access
2 Citations
3,686 Views
13 Pages

The use of nitrification inhibitors (NIs) with nitrogen fertilizers represents an effective strategy to reduce nitrogen loss. In addition, nitrification inhibitors are widely applied to improve agricultural yield. However, it is necessary to continue...

  • Review
  • Open Access
14 Citations
7,198 Views
32 Pages

Nitrous oxide (N2O) is a potent greenhouse gas, and agriculture represents more than fifty percent of total anthropogenic emissions. The production of N2O in soil is biogenic through nitrification, denitrification, chemonitrification, nitrifier denit...

  • Article
  • Open Access
3 Citations
1,948 Views
13 Pages

Structural Traits, Production, Biomass Allocation, and Changes in Leaf Investment in Megathyrsus maximus cv. MG12 Paredão Under Nitrogen Fertilization and Cutting Intervals

  • Vinícus L. Pinheiro,
  • Andressa S. Mendonça,
  • Danny Hellen G. Cruz,
  • Laylles C. Araújo,
  • Kele S. P. Andrade,
  • Tiago C. Rocha and
  • Weverton P. Rodrigues

Nitrogen (N) deficiency in soil limits the development of forage grasses, while its application can significantly increase productivity. This study aimed to evaluate the effects of increasing N doses and cutting intervals on structural and productive...

  • Article
  • Open Access
1 Citations
3,022 Views
20 Pages

Exploration of Predicted Nitrogen-Containing Natural Products from Northern Canadian Bark Beetle-Associated Bacteria

  • Nirasha Atapattu,
  • Nicolas Justus,
  • Hariniha Selvarajan,
  • Mitzchilouise Baylosis,
  • Marc Schieven and
  • Kalindi D. Morgan

Bark beetle-associated bacteria from the sub-boreal and boreal forests of northern Canada represent a largely unexplored source of bioactive natural products. This study aims to investigate the chemical potential of bacteria isolated from Dendroctonu...

  • Article
  • Open Access
1,535 Views
19 Pages

27 February 2025

The hybrid progeny (1-1) resulting from the cross between Caucasian clover and white clover initially demonstrated an inability to fix nitrogen naturally via spontaneous nodulation. However, following inoculation with specific rhizobia strains derive...

(This article belongs to the Special Issue Microbial Interactions with Plants: Advancing Nitrogen Fixation, Uptake, and Utilization)
  • Article
  • Open Access
10 Citations
3,473 Views
18 Pages

Dynamics of SPAD Index, Leaf Pigment, and Macronutrient Relationships in Sugar Beet Leaves Under Spring Nitrogen Fertilization

  • Ivana Varga,
  • Milan Pospišil,
  • Dario Iljkić,
  • Antonela Markulj Kulundžić,
  • Monika Tkalec Kojić and
  • Manda Antunović

18 February 2025

Nitrogen fertilization greatly affects the development of sugar beet leaf and photosynthetic activity. This study aimed to evaluate the dynamics of leaf SPAD index, chlorophyll a (Chl a), chlorophyll b (Chl b), carotenoids (Caro), and the macron...

(This article belongs to the Special Issue Nitrogen: Advances in Plant Stress Research)
  • Article
  • Open Access
4 Citations
3,395 Views
19 Pages

13 February 2025

Mostly, phosphorus (P) fertilizers are fixed in the interlayer of soil and become unavailable to crop plants. Combined inorganic fertilizers with organic manures could be a suitable solution to release these nutrients from the soil. P deficiency in s...

  • Article
  • Open Access
6 Citations
3,390 Views
17 Pages

7 February 2025

Nitrogen (N) fertilisers should be utilised as efficiently as possible. In addition to N fertiliser doses, nitrogen use efficiency (NUE) is influenced by other factors. The effects of four different N, phosphorus (P), and potassium (K) supply levels...

  • Article
  • Open Access
13 Citations
5,518 Views
16 Pages

26 January 2025

The imbalanced use of fertilizers, particularly the inefficient application of nitrogen (N), has led to reduced nitrogen use efficiency (NUE), lowered crop yields and increased N losses in Nepal. This study aimed to enhance yields, NUE and farm profi...

  • Article
  • Open Access
4 Citations
3,720 Views
15 Pages

Efficiency of Nitrate Removal from Groundwater by Adsorption on Raw and Treated Bentonite

  • Oussama Kheliel,
  • Leila Youcef,
  • Soufiane Youcef,
  • Mohamed Ghrissi Bouaziz and
  • Meriem Chebbi

25 January 2025

The objective of this study was to treat groundwaters with a high initial nitrate (NO3−) content (125 mg/L, and 177 mg/L) by adsorption onto a local bentonite in its raw state (RB), treated with a ratio of H2SO4/bentonite = 0.2 (B0.2), and anot...

  • Article
  • Open Access
1 Citations
3,257 Views
11 Pages

16 January 2025

Understanding how transport and storage conditions affect enzymatic activity is essential for accurate biomonitoring of nitrogen metabolism in plants. This study evaluated the effects of transport conditions and low-temperature storage on the enzymat...

  • Review
  • Open Access
6 Citations
4,688 Views
14 Pages

10 January 2025

Climate change and anthropogenic nitrogen addition alter the soil physicochemical properties and microbial activity in oligotrophic forest soil. Unbalanced and non-selective nitrogen fertilizer application is lost as gas emissions (N2O, NO) and also...

  • Review
  • Open Access
16 Citations
6,480 Views
19 Pages

Nutrient management in coupled aquaponic systems presents significant challenges due to competing requirements between fish and plant production within a single-loop framework. These challenges often result in suboptimal nutrient concentrations, comp...

  • Article
  • Open Access
4 Citations
3,196 Views
18 Pages

Effect of Foliar Application of Nitrogen-Fixing Microorganisms and Algae Extracts on Nutritional Status and Yield of Hazelnut and Walnut Trees

  • Margarida Arrobas,
  • João Roque,
  • Sandra Martins,
  • Cátia Brito,
  • Carlos Manuel Correia and
  • Manuel Ângelo Rodrigues

This study presents the results of two on-farm trials evaluating the efficacy of a nitrogen (N)-fixing inoculant (Methylobacterium symbioticum) applied as a foliar spray to provide N to hazelnut (Corylus avellana L.) and walnut (Juglans regia L.) tre...

  • Article
  • Open Access
27 Citations
7,142 Views
21 Pages

The Impact of Split Nitrogen Fertilizer Applications on the Productivity and Nitrogen Use Efficiency of Rice

  • Muhammad Sajjad,
  • Khalid Hussain,
  • Syed Aftab Wajid and
  • Zulfiqar Ahmad Saqib

25 December 2024

The application of nitrogenous fertilizer in reduced (“split”) doses of its total is suggested as a means to increase nitrogen use efficiency and rice productivity whilst reducing its environmental impact. Field trials conducted in 2022 a...

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Nitrogen - ISSN 2504-3129