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Agronomy
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Mechanisms of Soil Organic Carbon Turnover under Different Farmland Management...
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Mechanisms of Soil Organic Carbon Turnover under Different Farmland Management Practices

A special issue of Agronomy (ISSN 2073-4395). This special issue belongs to the section "Soil and Plant Nutrition".

Deadline for manuscript submissions: closed (31 May 2023) | Viewed by 6103

Special Issue Editors

Dr. Andong Cai

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Guest Editor
Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing 10081, China
Interests: carbon cycling; soil biogeochemistry; agricultural management; crop yield
Special Issues, Collections and Topics in MDPI journals
Prof. Dr. Chengjie Ren

E-Mail Website
Guest Editor
College of Agronomy, Northwest A&F University, Yangling 712100, China
Interests: soil carbon cycle; soil microbial ecology; utilization of soil microbes
Special Issues, Collections and Topics in MDPI journals
Dr. Bin Wang

E-Mail Website
Guest Editor
Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing 100081, China
Interests: soil carbon sequestration; greenhouse gas emission; crop productivity

Special Issue Information

Dear Colleagues,

Farmland soil organic carbon (SOC) is an essential indicator for representing soil fertility, maintaining sustainable development of agricultural systems, and ensuring global food security. SOC turnover parameters, such as SOC content, carbon use efficiency, respiration rate, turnover time, and carbon pool size et al., were significantly affected by different farmland management practices. Soil properties and climate factors also drive SOC turnover parameters. Although the benefits of increasing SOC have been widely studied, methods for quantifying key parameters of sequestering SOC under different farmland management practices are still poor. Therefore, it is essential to unravel the mechanisms of SOC turnover to provide useful information for future agriculture management.

In this Special Issue, we aim to exchange knowledge on any aspect of mechanisms of soil carbon turnover in agriculture.

Dr. Andong Cai
Dr. Chengjie Ren
Dr. Bin Wang
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Agronomy is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • soil carbon
  • turnover parameters
  • soil properties
  • management practices
  • soil fertility

Published Papers (3 papers)

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Research

14 pages, 2646 KiB  
Article
Influence of Bio-Fertilizer Type and Amount Jointly on Microbial Community Composition, Crop Production and Soil Health
by Lijun Li, Lihong Tong and Yizhong Lv
Agronomy 2023, 13(7), 1775; https://doi.org/10.3390/agronomy13071775 - 30 Jun 2023
Viewed by 1755
Abstract
To ensure long-term food production in a changing world, it is critical to identify field management practices that increase crop yields and maintain soil health. Additionally, sustainable agriculture needs to provide experimental evidence to support the use of traditional agricultural practices. In this [...] Read more.
To ensure long-term food production in a changing world, it is critical to identify field management practices that increase crop yields and maintain soil health. Additionally, sustainable agriculture needs to provide experimental evidence to support the use of traditional agricultural practices. In this study, a 20-year investigation of the effects of different combinations of fertilizer types (control, chemical fertilizer, organic fertilizer, and bio-fertilizer) and fertilization amount (conventional dosages and high dosages) on wheat yield and soil health, including soil enzyme activity and microbial biomass, soil microbial diversity, and crop yield. Our long-term study indicates that the use of high dosages of bio-fertilizer can increase the fertilizer yield contribution rate by a minimum of 76.7% compared to other management combinations. Furthermore, this practice can improve soil biological quality, including the concentration of soil microbial biomass carbon, promote bacterial biodiversity, and enhance the soil health index. The effect of high dosages fertilizer was greater than that of conventional dosages fertilizer. The highest soil health index was 0.88 in high dosage bio-fertilizer, and the lowest was 0.12 in chemical fertilizer. In summary, these results suggested that the use of bio-fertilizer can help maintain soil health and crop productivity in the long term. Full article
(This article belongs to the Special Issue Mechanisms of Soil Organic Carbon Turnover under Different Farmland Management Practices)
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16 pages, 2076 KiB  
Article
The Effects of Natural Humus Material Amendment on Soil Organic Matter and Integrated Fertility in the Black Soil of Northeast China: Preliminary Results
by Zhanhui Zhao, Congzhi Zhang, Hongye Wang, Fang Li, Hui Pan, Qiang Yang, Jianpeng Li and Jiabao Zhang
Agronomy 2023, 13(3), 794; https://doi.org/10.3390/agronomy13030794 - 9 Mar 2023
Cited by 4 | Viewed by 1974
Abstract
The input of exogenous organic materials is an effective way to improve soil organic matter (SOM) content in cropland. The exploration of the impact of new organic materials such as woody peat on black soil fertility can provide an important reference for preventing [...] Read more.
The input of exogenous organic materials is an effective way to improve soil organic matter (SOM) content in cropland. The exploration of the impact of new organic materials such as woody peat on black soil fertility can provide an important reference for preventing the degradation of black soil in Northeast China. In this study, the effects of adding woody peat to SOM and the soil-integrated fertility of black cropland were studied by seven treatments (no organic matter addition, CK; crop straw returning, SR; decomposed straw addition, DS; organic manure addition, OM; 6 t/ha woody peat addition, LWP; 10.5 t/ha natural humus material addition, MWP; and 15 t/ha natural humus material addition, HWP). The results show that natural humus material additions (LWP, MWP, and HWP treatments) could significantly increase SOM (increased by 4.79~9.41 g/kg), labile SOM (increased by 2.49~4.52 g/kg), and recalcitrant SOM (increased by 2.13~6.39 g/kg) components, respectively. For comparison, traditional organic material inputs (SR, DS, and OM treatments) had no significant effect on SOM but induced an increase in the labile SOM component in the following year. This study also found that natural humus material additions could improve soil-integrated fertility in a year term, especially in promoting SOM accumulation. However, organic manure amendment showed both the advantage of increasing soil fertility slightly and the disadvantage of increasing soil salt sharply. In conclusion, compared with traditional exogenous organic materials, the natural humus material amendment technique can rapidly increase the total SOM quantity and its different stability components and has a great effect in improving the integrated fertility of black soil. Thus, it is of significance to further study the potential of natural humus material amendment in the fertility of black soil in future. Full article
(This article belongs to the Special Issue Mechanisms of Soil Organic Carbon Turnover under Different Farmland Management Practices)
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18 pages, 3085 KiB  
Article
Long-Term Wheat-Soybean Rotation and the Effect of Straw Retention on the Soil Nutrition Content and Bacterial Community
by Dejie Kong, Chengjie Ren, Gaihe Yang, Nana Liu, Jiao Sun, Jinxia Zhu, Guangxin Ren and Yongzhong Feng
Agronomy 2022, 12(9), 2126; https://doi.org/10.3390/agronomy12092126 - 7 Sep 2022
Cited by 4 | Viewed by 1864
Abstract
Straw retention and wheat-soybean rotation play critical role in maintaining soil quality. However, the correlation between bacterial diversity and community structure, and soil nutrients is unknown, and a systematic understanding of their responses to straw retention is lacking. In the field experiment, the [...] Read more.
Straw retention and wheat-soybean rotation play critical role in maintaining soil quality. However, the correlation between bacterial diversity and community structure, and soil nutrients is unknown, and a systematic understanding of their responses to straw retention is lacking. In the field experiment, the straw retention treatments included no straw (NS), half straw (HS), and total straw (TS) retention during long-term wheat-soybean rotation. The mean contents of soil total nitrogen (TN), nitrate-N (NO3−-N), and microbial biomass nitrogen (MBN) increased by 15.06%, 21.10%, and 38.23%, respectively, with straw retention relative to NS, while that of ammonium-N (NH4+-N) reduced by 3.68%. The concentration of carbon components increased as straw retention increased. The levels of soil dissolved organic carbon (DOC), microbial biomass carbon (MBC), and soil organic carbon (SOC) increased by 4.34%, 7.63%, and 9.34%, respectively, with straw retention relative to NS. Soil bacterial alpha diversity was reduced with straw retention. Soil pH and nutrient content were identified as the main factors affecting the soil microbial diversity and structure at the phylum level. Accordingly, straw retention and soybean-wheat rotation enable sustainable agriculture in the dryland of northern China. Full article
(This article belongs to the Special Issue Mechanisms of Soil Organic Carbon Turnover under Different Farmland Management Practices)
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