Soil Fertility Management, Mitigating GHG Emissions and Sustainable Agriculture: 2nd Edition

A special issue of Soil Systems (ISSN 2571-8789).

Deadline for manuscript submissions: 30 November 2024 | Viewed by 2570

Special Issue Editor


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Guest Editor
International Fertilizer Development Center, P.O. Box 2040, Muscle Shoals, AL 35662, USA
Interests: nutrient management; fertilizers and environment; GHG emissions; C and N cycling; nitrogen-use efficiency; balanced fertilization; integrated soil fertility management
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Special Issue Information

Dear Colleagues,

This Special Issue follows the publication of the first edition of “Soil Fertility Management, Mitigating GHG Emissions and Sustainable Agriculture”.

Soil fertility management plays a critical role in the sustainable improvement of crop productivity and in reducing environmental pollution, including the mitigation of greenhouse gas (GHG) emissions. With the increasing cropping intensity, coupled with the inappropriate application of fertilizers and organic inputs, soil fertility is showing a declining trend, particularly in most developing countries in Asia and Africa. Most farmers’ use of fertilizer is imbalanced (an excessive use of nitrogen and low or no use of secondary nutrients and micronutrients), leading to the mining of nutrients from soils. This results in imbalances in the nutrients in soils and lower crop productivity, posing a challenge with regard to meeting an increasing global food demand. Soil fertility can be improved using a range of soil, crop, and fertilizer management practices. Inefficient fertilizer applications have not only increased fertilizer wastage and reduced farm profits but also increased environmental pollutions, including GHG emissions from soils. Therefore, it is important to identify sustainable strategies to improve soil fertility and improve fertilizer use efficiency by increasing plant nutrient uptake and reducing nutrient loss to the environment.

Authors are invited to submit their work on sustainable strategies to improve soil fertility through the efficient management of fertilizers, including the use of enhanced efficiency fertilizers, balanced fertilization, the adoption of the 4Rs (right source, right rate, right time, and right placement) of nutrient stewardship approaches, the management of soil organic matter, the mitigation of greenhouse gas emissions, and improved crop productivity.

Dr. Yam Kanta Gaihre
Guest Editor

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Keywords

  • soil fertility
  • fertilizer management
  • balanced fertilization
  • nitrogen-use efficiency
  • mitigating GHG emissions
  • improving crop productivity
  • environmental pollution

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Published Papers (2 papers)

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Research

14 pages, 4027 KiB  
Article
Residual Effects of Rice Husk Biochar and Organic Manure Application after 1 Year on Soil Chemical Properties, Rice Yield, and Greenhouse Gas Emissions from Paddy Soils
by War War Mon, Yo Toma and Hideto Ueno
Soil Syst. 2024, 8(3), 91; https://doi.org/10.3390/soilsystems8030091 - 22 Aug 2024
Viewed by 687
Abstract
Biochar is stable in soil and can have long-term effects on its physicochemical properties. Hence, a pot experiment was conducted with medium-fertility (MF) and low-fertility (LF) soils after 1 year of rice husk biochar and organic fertilizer application to determine biochar’s residual effects [...] Read more.
Biochar is stable in soil and can have long-term effects on its physicochemical properties. Hence, a pot experiment was conducted with medium-fertility (MF) and low-fertility (LF) soils after 1 year of rice husk biochar and organic fertilizer application to determine biochar’s residual effects on soil chemical properties, grain yield, and greenhouse gas emissions. In previous years, biochar alone (at application rates of 5 and 10 t ha−1) and biochar combined with chicken manure (CHM) or cow manure (at application rate of 5 t ha−1) were applied to the soil. In the present year, the soils were fertilized with only chemical fertilizers. Results indicated that application of 10 t ha−1 biochar combined with 5 t ha−1 CHM (B10:CHM) produced the highest grain yield and total global warming potential (GWPtotal) in both soils. Regarding grain yield, non-significant results were detected for B10:CHM, B5:CHM, and B10. This study revealed that biochar retains nutrients without annual reapplication and has long-term effects. Although biochar application can suppress N2O emissions effectively, the combined application of biochar 10 t ha−1 and organic manure significantly increased CH4 emissions. Overall, B5:CHM can be recommended for rice cultivation since it improves grain yield without increasing GWPtotal. Full article
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17 pages, 1342 KiB  
Article
Enhancing Corn Yield and Soil Quality in Irrigated Semiarid Region with Coal Char and Biochar Amendments
by Resham B. Thapa, Samir Budhathoki, Chandan Shilpakar, Dinesh Panday, Bouzeriba Alsunuse, Sean X. Tang and Peter D. Stahl
Soil Syst. 2024, 8(3), 82; https://doi.org/10.3390/soilsystems8030082 - 15 Jul 2024
Cited by 1 | Viewed by 1261
Abstract
Sustainable use of croplands is facing a challenge to maintain organic carbon (C) in soil. Pyrolyzed coal or coal char (CC) is a porous C material produced from the pyrolysis of coal containing high organic C, large surface area, and low bulk density [...] Read more.
Sustainable use of croplands is facing a challenge to maintain organic carbon (C) in soil. Pyrolyzed coal or coal char (CC) is a porous C material produced from the pyrolysis of coal containing high organic C, large surface area, and low bulk density like biochar (BC). This study evaluates corn (Zea mays L.) grain yield and selected soil properties in soil amended with CC and BC at two rates (22 and 44 Mg ha−1) with farmyard manure (FM) (66 Mg ha−1) and without FM addition. This field experiment was performed in sandy loam soil at the University of Wyoming’s Sustainable Agricultural Research and Extension Center (SAREC), Lingle, WY, USA. Two years of field study results indicated CC and BC applied at 22 Mg ha−1 with FM resulted in significantly greater average corn grain yields (13.04–13.57 Mg ha−1) compared to the no char’s treatment (11.42 Mg ha−1). Soil organic matter (SOM) content was significantly greater in the higher application rates of CC and BC than in treatments without chars. Overall, soil nitrate nitrogen (NO3-N), phosphorous (P), and potassium (K) were found significantly greater in CC and BC co-applied with FM treatments. Soil water-holding capacity (WHC) significantly improved in sandy loam soil (up to 27.6% more than the no-char treatment) at a greater concentration of char materials. This study suggests that char materials applied at a moderate rate (22 Mg ha−1) with FM can improve soil properties and crop yield. Full article
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