Stable carbon isotope ratios of water-extractable organic carbon affected by application of rice straw and rice straw compost during a long-term rice experiment in Yamagata, Japan

Nguyen-Sy, Toan; Cheng, Weiguo; Kimani, Samuel Munyaka; Shiono, Hiroyuki; Sugawara, Reo; Tawaraya, Keitaro; Watanabe, Tôru; Kumagai, Katsumi

doi:10.1080/00380768.2019.1708209

Cited by 24 publications

(5 citation statements)

References 22 publications

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“…The contributions of C3-and C4-plant-derived SOM to soil C were estimated using the measured C-isotope signatures (δ 13 C) and a mass balance approach (Nguyen-Sy et al, 2020). A sample (~50 µ g C) was weighed in a tin capsule and the δ 13 C isotope composition was measured for the litter and soil samples using an online C analyzer (NC 2500; Thermo Fisher Scientific, Waltham, MA, USA), coupled with an isotope ratio mass spectrometer (MAT252; Thermo Electron, Bremen, Germany).…”

Section: Calculating the Contributions Of C3-and C4-plant-derived Carbonmentioning

confidence: 99%

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Continuous maize cropping accelerates loss of soil organic matter in northern Thailand as revealed by natural 13C abundance

et al. 2022

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Aims: The loss of soil organic matter (SOM) has widely been reported in the tropics after changing land use from shifting cultivation to continuous cropping. We tested whether continuous maize cultivation accelerates SOM loss compared to upland rice and forest fallow.Methods: Because litter sources include C4 plants (maize in maize fields and Imperata grass in upland rice fields) in Thailand, C3-derived and C4-derived SOM can be traced using the differences in natural 13 C abundance (δ 13 C) between C3 and C4 plants. We analyzed the effects of land use history (cultivation or forest fallow period) on C stocks in the surface soil. Soil C stocks decreased with the cultivation period in both upland rice and maize fields. Results:The rate of soil organic carbon loss was higher in maize fields than in upland rice fields.The decomposition rate constant (first order kinetics) of C3-plant-derived SOM was higher in the maize fields than in the upland rice fields and the C4-plant-derived SOM in the forest fallow.Soil surface exposure and low input of root-derived C in the maize fields are considered to accelerate SOM loss. Soil C stocks increased with the forest fallow period, consistent with the slow decomposition of C4-plant-derived SOM in the forest fallows.Conclusions: Continuous maize cultivation accelerates SOM loss, while forest fallow and upland rice cultivation could mitigate the SOM loss caused by continuous maize cultivation.

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Section: Calculating the Contributions Of C3-and C4-plant-derived Carbonmentioning

confidence: 99%

“…The sample δ 13 C values depend on the mixture of C3 plant-derived C and C4-plant-derived C, as expressed in the following equation (Nguyen-Sy et al, 2020):…”

Section: Calculating the Contributions Of C3-and C4-plant-derived Carbonmentioning

confidence: 99%

Continuous maize cropping accelerates loss of soil organic matter in northern Thailand as revealed by natural 13C abundance

et al. 2022

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“…Nguyen et al (2020 a, b) describe the effects of long-term applications of conventional rice straw and cow dung compost on the fertility of soil used for rice production Nguyen et al (2020a) and the N balance (Nguyen et al 2020b) in paddy fields in Yamagata Prefecture. Nguyen-Sy et al (2020) report a long-term rice experiment in Yamagata that looked at stable C isotope ratios of water-extractable organic C affected by application of rice straw and rice straw compost. Aside from the effects of long-term applications of rice straw and compost on C and N dynamics in cool-temperate regions in Tohoku and Hokuriku, Toriyama, Amino, and Kobayashi (2020) report how incorporating fallow weed contributes to the N-supplying capacity of paddy soil under organic farming in Tochigi Prefecture, Kanto region.…”

Section: Prefacementioning

confidence: 99%

Soil carbon and nitrogen dynamics by land use and management changes in East and Southeast Asian countries (soil C and N by LUMC)

Cheng

2020

Soil Science and Plant Nutrition

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“…Rice straw is one crucial organic matter source for agriculture, improving soil quality properties (Cheng et al, 2016;Kautsar et al, 2020;Tang et al, 2016). It could be considered applying as a type of 95 organic fertilizer (Cheng et al, 2016;Dobermann & Fairhurst, 2002;Kautsar et al, 2020;Nguyen-Sy et al, 2020). Labile fractions were responsible for the slow decomposition of the total content of soil organic matter (Nguyen-Sy et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

“…It could be considered applying as a type of 95 organic fertilizer (Cheng et al, 2016;Dobermann & Fairhurst, 2002;Kautsar et al, 2020;Nguyen-Sy et al, 2020). Labile fractions were responsible for the slow decomposition of the total content of soil organic matter (Nguyen-Sy et al, 2020). Observations of increased soil organic matter stocks suggest that rice straw amendment plays a significant role in facilitating the rate of decomposition (Cheng et al, 2016;Kautsar et al, 2020;Tang et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

Effect of rice straw and garbage enzyme addition on soil properties and plant growth of rice

Nguyen-Sy,

Do,

Tran

et al. 2023

Sains Tanah J. Soil Sci. Agroclimatology

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The objective of the current study was to examine the impacts of rice straw and garbage enzyme generated from local vegetable and fruit waste on plant growth and carbohydrate or ammonium extraction from paddy soil after one month of growth in a pot experiment. Samples of topsoil were obtained from a depth of 0-15 cm, and the following treatments were applied: control (10 g soil), RS (adding 30 g soil + 0.6 g rice straw), GE (30 g soil + garbage enzyme), and combination (adding 30 g soil+ rice straw and garbage enzyme) maintained at room temperature. The study findings indicated that there were no observable impacts of rice straw and garbage enzyme application on biomass. However, RS addition seems to reduce root length but enhance shoot length. Soil carbohydrates that were extracted ranged from 61 to 207 mg kg−1 soil, and treatments with rice straw addition exhibited significantly higher levels compared to those without it (p < 0.05). The ammonium content was low. It could be concluded that at the initial seedling stage, rice straw has more effects on soil properties and plant growth than garbage enzyme. To fully assess the effects of rice straw and garbage enzyme on soil properties and plant growth, it is recommended that further research be conducted over longer periods

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Stable carbon isotope ratios of water-extractable organic carbon affected by application of rice straw and rice straw compost during a long-term rice experiment in Yamagata, Japan

Cited by 24 publications

References 22 publications

Continuous maize cropping accelerates loss of soil organic matter in northern Thailand as revealed by natural 13C abundance

Continuous maize cropping accelerates loss of soil organic matter in northern Thailand as revealed by natural 13C abundance

Soil carbon and nitrogen dynamics by land use and management changes in East and Southeast Asian countries (soil C and N by LUMC)

Effect of rice straw and garbage enzyme addition on soil properties and plant growth of rice

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