Effects of long-term fertilization on aggregate dynamics and organic carbon and total nitrogen contents in a reddish paddy soil

Xiyu, 刘希玉 Liu; Zhongqiang, 王忠强 Wang; Xinyu, 张心昱 Zhang; Lili, 徐丽丽 Xu; Yao, 施瑶 Shi; Xiaomin, 孙晓敏 Sun; Fengting, 杨风亭 Yang

doi:10.5846/stxb201301150105

Cited by 3 publications

(1 citation statement)

References 7 publications

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“…The RAC in the SOC ranged from a decrease of 0.59 g kg −1 of carbon to an increase of 0.83 g kg −1 of carbon each year. The results obtained by our research were also confirmed by studies conducted by other foreign scientists, who also investigated the effect of various origin amendments incorporation on SOC transformation processes [44,45]. The results that were achieved can be clarified through the following facts: the input of various types of organic matter promoted the fixation of particulate organic carbon in newly formed microaggregates, which were characterized by greater stability [46].…”

Section: Estimation Of the Effects Of Various Organic Matter Inputs O...supporting

confidence: 85%

The Response of Retisol’s Carbon Storage Potential to Various Organic Matter Inputs

2023

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Organic carbon sequestration and its quality in soil is a crucial aspect in maintaining the productivity of the soil and the whole ecosystem. The study examined the changes in soil organic carbon (SOC), its sequestration potential, and the mean effect size under various long-term organic matter inputs in acid soil (Dystric Retisol). Cattle manure (CM 60 t ha−1) and various plant residues were used for the fertilization of acid and limed soil. The following treatments were included in the experimental design: (1) natural Retisol; (2) natural Retisol + CM; (3) natural Retisol + various plant residues; (4) calcium carbonate (CaCO3) at a 1.0 rate every five years); (5) CaCO3 + CM; (6) CaCO3 + various plant residues. The data demonstrated that the treatments including the use of organic material (CM and various plant residues) showed a greater SOC content accumulation with a storage of up to 0.2–0.6% more carbon in the topsoil. Alternative organic fertilizers had a detrimental impact when applied to unlimed soil, with a loss of 0.59 g kg−1 C per year. All the fertilization treatments significantly increased the SOC level with the mean effect size of 0.02–0.28, and the increase varied from 1.89% to 32.89%. This result suggested that liming, together with organic fertilizers, proved to be a relatively efficient approach to improving the soil’s health and quality.

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Section: Estimation Of the Effects Of Various Organic Matter Inputs O...supporting

confidence: 85%

The Response of Retisol’s Carbon Storage Potential to Various Organic Matter Inputs

2023

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Lower C sequestration and N use efficiency by straw incorporation than manure amendment on paddy soils

Zhou

Shi

et al. 2016

Agriculture, Ecosystems & Environment

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Assessing the Impacts of Fertilization Regimes on Soil Aggregate Dynamics in Northeast China

Ding

Fang

et al. 2022

Agronomy

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Determining the effects of fertilization regimes on soil aggregates, carbon (C) and nitrogen (N) distribution, and pH is essential for improving soil structure and soil organic carbon (SOC) accumulation to help in proper soil fertility management. Based on a 41-year field fertilization experiment conducted on dark brown soil in northeast China, we examined the soil aggregate size distribution and associated C, N, and pH to provide a scientific basis for elucidation of the mechanisms underlying the effects of fertilization treatments on soil structure and fertility. Six different fertilization treatments included no fertilizer (CK), low-dose chemical fertilizer (NP), moderate-dose chemical fertilizer (2NP), high-dose chemical fertilizer (4NP), normal-dose organic fertilizer (M), and normal-dose organic fertilizer plus moderate-dose chemical fertilizer (M+2NP). Our findings showed that compared to CK, M and M+2NP significantly increased the proportion of macroaggregates by 40% and 28%, respectively, whereas 4NP significantly decreased it by 19%. The mean weight diameter (MWD) and geometric mean diameter (GMD) under M and M+2NP were significantly higher than that under CK, at 12–21% and 24–36%, respectively. The fractal dimension (D) value of M+2NP was significantly lower than those of 2NP and 4NP by 4% and 5%, respectively. Soil pH under the M treatment was highest, followed by M+2NP. Soil pH under 2NP and 4NP more significantly decreased, by 0.1 and 0.2 units, than under M treatment. Soil pH values were correlated with the proportion of soil macroaggregates, MWD, and GWD, respectively (p < 0.05). Relative to CK, M and M+2NP increased the contents and stocks of SOC (by 40–49% and 89–93%, respectively) and total N (59–68% and 119–123%, respectively). Furthermore, the contents and stocks of aggregate-associated SOC and total N decreased following the order: NP > 2NP > 4NP. Overall, the long-term application of organic fertilization regimes (M and M+2NP) effectively improved soil aggregation as well as SOC accumulation and decreased soil acidification in dark brown soil in northeast China.

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Effects of long-term fertilization on aggregate dynamics and organic carbon and total nitrogen contents in a reddish paddy soil

Cited by 3 publications

References 7 publications

The Response of Retisol’s Carbon Storage Potential to Various Organic Matter Inputs

The Response of Retisol’s Carbon Storage Potential to Various Organic Matter Inputs

Lower C sequestration and N use efficiency by straw incorporation than manure amendment on paddy soils

Assessing the Impacts of Fertilization Regimes on Soil Aggregate Dynamics in Northeast China

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