Temporal variability of soil organic carbon in paddies during 13‐year conservation tillage

Qi, Jianying; Wang, Xing; Zhao, Xin; Pu, Chao; Kan, Zheng‐Rong; Li, Chao; Liu, Peng; Xiao, Xiaoping; Lal, Rattan; Zhang, Hai Lin

doi:10.1002/ldr.3384

Cited by 35 publications

(15 citation statements)

References 45 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The soil microbial CUE and MBC content with CT treatment were higher than that of RTO treatment. Similar results reported that rice yield and soil physicochemical properties of paddy field were increased through application of crop residue and tillage practice 3 , 4 .…”

Section: Discussionsupporting

confidence: 82%

“…Soil organic carbon (SOC) content is affected by soil microorganism 2 . In the previous research, the results showed that SOC with no-tillage (NT) were lower than that of rotary and moldboard plow tillage with incorporated residue 3 , 4 . However, some studies showed that reduced tillage with rice residue retention increases the SOC content compared with conventional tillage (CT) and NT 5 .…”

Section: Introductionmentioning

confidence: 94%

See 1 more Smart Citation

Microbial carbon source utilization in rice rhizosphere soil with different tillage practice in a double cropping rice field

Tang

Xiao

et al. 2021

Sci Rep

Self Cite

View full text Add to dashboard Cite

Carbon (C) plays an important role in maintaining soil fertility and increasing soil microbial community, but there is still limited information about how source utilization characteristics respond to soil fertility changes under double-cropping rice (Oryza sativa L.) system in southern China paddy field. Therefore, the effects of different short-term (5-years) tillage management on characteristics of C utilization in rice rhizosphere and non-rhizosphere soils under double-cropping rice field in southern China were investigated by using 18O incorporation into DNA. Therefore, a field experiment were included four tillage treatments: conventional tillage with crop residue incorporation (CT), rotary tillage with crop residue incorporation (RT), no-tillage with crop residue retention (NT), rotary tillage with crop residue removed as control (RTO). The results showed that soil microbial biomass C content with CT, RT, NT treatments were increased by 29.71–47.27% and 3.77–21.30% in rhizosphere and non-rhizosphere soils, compared with RTO treatment, respectively. Compared with RTO treatment, soil microbial basal respiration and microbial growth rate with CT treatment were increased 30.56%, 30.94% and 11.91%, 12.34% in rhizosphere and non-rhizosphere soils, respectively. The soil microbial C utilization efficiency were promoted with NT treatment. Compared with RTO treatment, the metabolic capacity of soil microorganism to exogenous C source with CT, RT and NT treatments were increased. The largest type of exogenous C source was saccharides, followed by amino acid and polymers, and complex compounds was the smallest. The redundancy analysis results indicated that tillage treatments significantly changed the utilization characteristics of soil microorganism to exogenous C source. Compared with RTO treatment, the grain yield of early rice and late rice with CT treatment were increased by 409.5 kg ha−1 and 387.0 kg ha−1, respectively. Therefore, the CT and RT treatments could significantly increase soil microbial biomass C content, but the NT treatment promote microbial C utilization efficiency in the double-cropping paddy field of southern China.

show abstract

Section: Discussionsupporting

confidence: 82%

Section: Introductionmentioning

confidence: 94%

Microbial carbon source utilization in rice rhizosphere soil with different tillage practice in a double cropping rice field

Tang

Xiao

et al. 2021

Sci Rep

Self Cite

View full text Add to dashboard Cite

show abstract

“…After using different tillage methods for 11 years, in the 0–10 cm soil depth, the ZT had the highest SOC and N storage followed by PZT and then PT. Zero tillage can effectively increase SOC and N storage in surface soil (Qi et al, 2019; Xue et al, 2018). This improvement may be caused by the cover crop residue, which could have helped in storing supplemental soil C and N; however, it could be caused by the lower C and N emission in a zero‐tillage system compared with that in a ploughing‐tillage system (Han, Ning, Li, & Cao, 2014; Lu & Liao, 2017).…”

Section: Discussionmentioning

confidence: 99%

Ploughing/zero‐tillage rotation regulates soil physicochemical properties and improves productivity of erodible soil in a residue return farming system

Wang

et al. 2020

Land Degrad Dev

View full text Add to dashboard Cite

In residue return farming, ploughing and zero‐tillage (syn. no‐till or minimal tillage) rotation may regulate soil physicochemical properties and help reduce erosion and improve productivity; however, the soil physicochemical properties and soil productivity response to ploughing and zero‐tillage rotation remain unclear. This present study evaluates the effects of ploughing and zero‐tillage rotation on soil physicochemical properties and crop productivity based on an 11‐year experiment (2007–2018) on a typical erodible area of the Loess Plateau. Three tillage methods were included: ploughing and zero‐tillage rotation with 1‐year ploughing tillage and 1‐year zero tillage (PZT), ploughing tillage with moldboard plough (PT), and zero tillage (ZT); crop residue was returned in all treatments. After 11 years' we tested, the PZT method showed significantly lower soil water storage in key maize growth stages, less soil organic carbon (SOC) and total nitrogen (N) storage (0–10 cm), and poorer soil structure stability (0–10 cm) when compared with ZT. However, PZT showed significantly higher SOC and N storage (4.5%, 6.5% and 16.3%, 8.6%, respectively) in the 10–20 cm and 20–40 cm soil layers, compared with ZT. In addition, when compared with ZT and PT, PZT significantly decreased soil penetration resistance in 0–10 cm, 10–20 cm, and 20–40 cm soil depths and significantly increased yield of maize by 10.9 and 7.8%, respectively, and of wheat by 11.2 and 9.8%, respectively. This study highlights that combining ploughing and zero tillage with return of crop residue changed soil physicochemical properties and can provide an effective method to improve soil productivity in an erodible field.

show abstract

“…Over the past few decades, large areas of soil have been degraded globally, with on- and off-site erosion ( Kara et al, 2016 ) followed by reductions in soil organic carbon (SOC) ( Gibbs & Salmon, 2015 ). Increasing the chelation or accumulation of SOC can effectively improve soil quality, reduce the risk of degradation ( Qi et al, 2019 ), and increase grain yields ( Uslu et al, 2020 ). The components of grain yields depend on and compensate for each other with changes in soil conditions ( Xu et al, 2019 ), and improper tillage measures can change soil conditions, making it vulnerable to severe degradation, resulting in lower yields, and further increasing the risk of food insecurity ( Doni et al, 2017 ).…”

Section: Introductionmentioning

confidence: 99%

Subsoiling increases aggregate-associated organic carbon, dry matter, and maize yield on the North China Plain

Shen

Zhang

Cui

et al. 2021

PeerJ

View full text Add to dashboard Cite

Background Soil degradation is one of the main problems in agricultural production and leads to decreases in soil quality and productivity. Improper farming practices speed this process and are therefore not conducive to food security. The North China Plain (NCP) is a key agricultural area that greatly influences food security in China. To explore the effects of different tillage measures on aggregate-associated organic carbon (AOC), the accumulation and transport of dry matter, and maize yield, and to identify the most suitable tillage method for use on the NCP, a field experiment was conducted at Shandong Agricultural University from 2016–2017 using plots that have been farmed using conservation tillage since 2002. Methods In this study, Zhengdan 958 summer maize was used as the test material and undisturbed soil and plant samples were obtained under four tillage methods—no-tillage (NT, tillage depth: 0 cm); rotary tillage (RT, tillage depth: 10 cm); conventional tillage (CT, tillage depth: 20 cm); subsoiling (SS, tillage depth: 40 cm)—which were used to determine the AOC and dry matter contents, as well as the yields of two summer maize growing seasons. Each sample was replicated three times and the AOC content was determined via potassium dichromate oxidation colorimetry. Potassium dichromate oxidized organic carbon in organic matter was employed to reduce hexadecent chromium into green trivalent chromium. Colorimetry was then used to determine the amount of reduced trivalent chromium and calculate the organic matter content. Results The resulting data were statistically analyzed and the results showed that, compared with CT, the AOC contents with NT and SS increased by 5.65% and 9.73%, respectively, while that with RT decreased by 0.12%. Conventional tillage resulted in the highest mean dry matter weight when the maize reached maturity, which was 19.19%, 9.83%, and 3.38% higher than those achieved using NT, RT, and SS, respectively. No significant difference was found between CT and SS treatments, both of which tended to increase the accumulation of dry matter as well as its contribution of assimilates to grain yield post-anthesis. Compared with CT, the mean yield increased at a rate of 0.18% with SS, while yields declined at rates of 17.17% and 11.15 with NT and RT, respectively. The yield with NT was the lowest, though the harvest indices with NT and SS were higher than those with RT and CT. Overall, SS increased the accumulation of dry matter and its contribution of assimilates to grain yields post-anthesis, as well as the AOC content and yields, making it the ideal tillage method for the NCP.

show abstract

Temporal variability of soil organic carbon in paddies during 13‐year conservation tillage

Cited by 35 publications

References 45 publications

Microbial carbon source utilization in rice rhizosphere soil with different tillage practice in a double cropping rice field

Microbial carbon source utilization in rice rhizosphere soil with different tillage practice in a double cropping rice field

Ploughing/zero‐tillage rotation regulates soil physicochemical properties and improves productivity of erodible soil in a residue return farming system

Subsoiling increases aggregate-associated organic carbon, dry matter, and maize yield on the North China Plain

Contact Info

Product

Resources

About