Seasonal Patterns of Soil Respiration and Related Soil Biochemical Properties under Nitrogen Addition in Winter Wheat Field

Liang, Guopeng; Houssou, Albert A.; Wu, Huijun; Dan, Cai; Wu, Xueping; Gao, Lili; Li, Jing; Wang, Bisheng; Li, Shengping

doi:10.1371/journal.pone.0144115

Cited by 26 publications

(10 citation statements)

References 59 publications

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“…The largest effects observed in this study were attributable to sampling date and depth, which is similar to other studies (Aon and Colaneri, 2001; Deng, 1996; Deng and Tabatabai, 1997; Kaurin et al, 2018; Mariscal‐Sancho et al, 2018). Year‐to‐year (Reardon et al, 2014), seasonal (Aon and Colaneri, 2001; Mariscal‐Sancho et al, 2018; Wuest, 2014, 2015), and even monthly (Liang et al, 2015) variability can be observed for soil measurements as factored by climatic, environmental, and plant‐induced changes to the soil physical and chemical properties. Some of the year‐to‐year variability in this study may be explained both environmentally in terms of soil water, timing of moisture, cumulative growing degree‐days, and the amount of crop biomass returned to the soil.…”

Section: Discussionmentioning

confidence: 99%

Soil Microbial and Chemical Properties of a Minimum and Conventionally Tilled Wheat–Fallow System

Reardon¹,

Wuest²,

Melle³

et al. 2019

Soil Science Soc of Amer J

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Tillage alters the soil environment and microbial communities responsible for decomposition and nutrient cycling. This study aimed to evaluate the effects of tillage intensity (minimum vs. conventional) on the soil chemical and microbial properties of a winter wheat (Triticum aestivum L.)–fallow rotation in the low‐precipitation zone of the Pacific Northwest. Soils collected for 2 yr at two depths from both crop phases (wheat and fallow) were analyzed for pH, nutrient availability, total C and N, fungal and bacterial gene abundance, and enzyme activity related to C, P, and N cycling. All soil variables excluding soil pH were significantly greater in the top 10 cm of the soil. Except for pH and nitrate, all were greater in 2016 than in 2017. Across the full rotation, tillage did not affect any measured parameter. Instead, crop phase influenced several soil chemical properties and arylamidase activity, although the effects were not consistent across depth. Fungal abundance was influenced by tillage intensity but only in the top depth under wheat, indicating a phase‐specific effect rather than a change persisting across the entire rotation. Soil enzymes were strongly related to total C, total N, and phosphate across the two soil depths, but effects were inconsistent between depths and across phases. Overall, crop phase and year were stronger drivers of soil chemical and microbial properties than tillage intensity. Short‐term (<4 yr) tillage intensification does not have a strong influence on the nutrient cycling capacity of soil, although fungal numbers may decline in the cropped phase. Core Ideas Tillage intensification did not induce strong changes in soil properties. Sample year and depth were significant factors impacting soil chemistry and biology. Wheat‐cropped soil had more fungal DNA under minimum than conventional tillage. Impacts of tillage were minor and limited to comparisons within each crop phase.

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Section: Discussionmentioning

confidence: 99%

Soil Microbial and Chemical Properties of a Minimum and Conventionally Tilled Wheat–Fallow System

Reardon¹,

Wuest²,

Melle³

et al. 2019

Soil Science Soc of Amer J

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“…Many studies have shown that soil microbial activity decreased due to excessive soil moisture [23,40,41]. Liang et al [42] also observed that excessive water noticeably suppressed microbial activity in the semi-arid cropland of China. Because soil moisture was maintained over 0.20 m 3 m −3 in our study, excessive soil moisture might have decreased microbial activity in the first year of this experiment.…”

Section: Effect Of Cultivation Management On the Co 2 Fluxmentioning

confidence: 99%

Effect of Traditional Cultivation Management on CO2 Flux in the Dry Tropical Cropland of South India

et al. 2019

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Soils in tropical croplands are becoming degraded because of soil carbon (C) depletion. Local farmers in South India use a specific management of traditional cultivation, i.e., broadcast seeding. However, for sustainable C management, there is no quantitative data on the CO2 flux under this management. Our objectives were to (1) estimate the annual CO2 flux, and (2) evaluate the effect of traditional cultivation management (seeding rate) on the CO2 flux. Our field experiment was conducted in South India, from 2015 to 2017, including two cultivation periods with four cultivation management treatments (traditional cultivation management plot (T), fixed density plot (FD), no thinning plot (NT), and bare plot (B)). The seeding rate in the FD plot was ca. 50% of the T plot. We applied 1.1 Mg C ha−1 farmyard manure just before the experiment as a C input. We found that broadcasting, thinning, and cultivation increased soil moisture, while the CO2 efflux rate showed no significant difference between treatments throughout the experimental period. This indicates that cultivation management did not affect the CO2 flux. The total CO2 fluxes for two years were estimated at 2.2–2.7 Mg C ha−1. Our results indicate that it is necessary to apply larger or more frequent C inputs to prevent C depletion.

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“…Soil C redistribution and microbial habitat condition were altered under manure and crop residues inputs 78 . Previous studies confirmed that different fertilization managements might affect the soil biological processes, through changing the soil environment, the nutrients and turnover of aggregate, which could directly or indirectly affect C storage [80][81][82] . This study showed that NP made a significant reduction of the microbial biomass ( Fig.…”

Section: Discussionmentioning

confidence: 84%

The Contribution of Microorganisms to Soil Organic Carbon Stock Under Fertilization Varies among Aggregate Size Classes

Liang

et al. 2021

Preprint

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Long term fertilization alters soil microbiological properties and then affects soil organic carbon (SOC) stocks. However, the interrelations of SOC with biological drivers and their relative importance are rarely analyzed quantitatively at aggregate scale. We investigated the contribution of soil microbial biomass, diversity and enzyme activity to C stock in soil aggregate fractions (> 5 mm, 2 − 5 mm, 1 − 2 mm, 0.25 − 1 mm and < 0.25 mm) at topsoil (0–15 cm) from 27-year long term fertilization regime. Compared to CK (no fertilization management), NPS and NPM (inorganic fertilization plus the incorporation of maize straw or composted cow manure) significantly reduced the impact of NP (inorganic fertilizers application alone) on the growth of microbial community, and increased the microbial contribution to C stock. The results showed that microbial variables were significantly correlated with SOC content in > 0.25 mm aggregates rather than in < 0.25 mm aggregates. Fungal variables (fungal, AM biomass, and F/B ratio) and enzyme activities (BXYL and LAP) in > 0.25 mm aggregates explained 21% and 2% on C, respectively. Overall, organic matter (OM) addition could contribute to higher C storage by boosting fungal community and enzyme activity rather than by changing microbial community diversity in macro-aggregates.

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Seasonal Patterns of Soil Respiration and Related Soil Biochemical Properties under Nitrogen Addition in Winter Wheat Field

Cited by 26 publications

References 59 publications

Soil Microbial and Chemical Properties of a Minimum and Conventionally Tilled Wheat–Fallow System

Soil Microbial and Chemical Properties of a Minimum and Conventionally Tilled Wheat–Fallow System

Effect of Traditional Cultivation Management on CO2 Flux in the Dry Tropical Cropland of South India

The Contribution of Microorganisms to Soil Organic Carbon Stock Under Fertilization Varies among Aggregate Size Classes

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