The Effect of Soil Type on Gaseous Emissions from Flooded Rice Fields in Portugal

Pereira, José; Carranca, Corina; Coutinho, João; Trindade, Henrique

doi:10.1007/s42729-020-00243-9

Cited by 7 publications

(4 citation statements)

References 28 publications

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“…However, in 2015, no significant peak of CH 4 emission was observed during the first half of the growing cycle, regardless of the treatment (Figure 2). Due to inverse relationship between CH 4 and CO 2 in C emission from flooding rice soils [50], these results could be explained by high peaks of CO 2 found in 2015 during the initial stages of crop. In fact, in 2015 the highest peak of CH 4 emission is in line with residual emission for CO 2 .…”

Section: Emissions Chmentioning

confidence: 98%

Direct and Residual Impacts of Olive-Mill Waste Application to Rice Soil on Greenhouse Gas Emission and Global Warming Potential under Mediterranean Conditions

et al. 2022

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The olive oil industry produces high amounts of waste, which need to be valorized in a more sustainable way as an alternative to its traditional use as an energy source, with high associated CO2 emissions. Rice (Oryza sativa L.) is one of the most important crops for global food security; however, the traditional cropping systems under flooding lead to an important decrease of soil quality, as well as relevant emissions of greenhouse gases (GHG). The aim of this study was to assess the GHG emission from rice fields amended with composted two-phase olive mill waste (C-TPOW), in Mediterranean conditions. A field experiment was carried in rice cultivated by the traditional system, either unamended (Control) or amended with C-TPOW (Compost). GHG emissions were measured over three years following a single C-TPOW application (80 Mg ha−1 only in the first year of study), so that the results found in the first and third years correspond to its direct and residual effects, respectively. Compost decreased CO2 emissions relative to Control by 13% and 20% in the first and third year after C-TPOW application, respectively. However, in the case of CH4 and N2O, increases in the total cumulative emission were recorded in Compost relative to Control throughout the study, in agreement with the highest β-glucosidase and urease activity observed in the amended soil. The values of global warming potential (GWP) and yield-scaled GWP increased by 14% and 11%, respectively, in Compost relative to Control in the first year, but no significant differences between treatments were observed three years after application for GWP and yield-scaled GWP. Therefore, the use of C-TPOW as soil amendment in rice fields could be a good option since its impact on GHG emissions seems to decrease over time, while the benefit for soil remained clear even after 3 years.

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Section: Emissions Chmentioning

confidence: 98%

Direct and Residual Impacts of Olive-Mill Waste Application to Rice Soil on Greenhouse Gas Emission and Global Warming Potential under Mediterranean Conditions

et al. 2022

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“…Biochar addition to acidic soils enhances soil aeration and O 2 availability in the soil profile and inhibits denitrification by microbes (generally creating suboxic conditions), which in turn decreases N 2 O emissions (Van Zwieten et al 2010). Moreover, biochar has good adsorption properties, and its application results in the adsorption of NH 4 + and NO 3 − on its surface under different water regimes (Pereira et al 2020) and thus decreases the availability of inorganic N pools for nitrifiers and denitrifiers, which produce N 2 O as a byproduct (Singh et al 2010;Clough et al 2013;Khalid et al 2019); thus, this process leads to a substantial reduction in N 2 O production under 50% and 90% WFPS ( Figs. 1 and 5).…”

Section: Discussionmentioning

confidence: 99%

N2O Emissions Mitigation in Acidic Soil Following Biochar Application Under Different Moisture Regimes

Aamer

Shaaban

Hassan

et al. 2020

J Soil Sci Plant Nutr

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Managing soil pH has been recognized as one of the promising options for N 2 O emission mitigation in acidic soils. Rice-straw biochar (BC) application to acidic soils can not only ameliorate soil acidity but also influence N 2 O emissions. We investigated the impact of various levels of rice-straw-derived biochar, a control (no biochar), 2% biochar, and 4% biochar under 50% and 90% water-filled pore space (WFPS) values. In comparison with the application of biochar at 2%, the application of biochar at 4% more pronouncedly altered soil properties (pH, ammonium (NH 4 +-N), nitrate (NO 3-N), microbial biomass carbon (MBC), and abundance of nosZ and nirK genes). Similarly, more noticeable changes in soil properties were noted under 90% WFPS than under 50% WFPS. The soil pH increased from 5.67 to 7.29 with the 4% biochar application. In comparison with those following the 2% biochar application and the control, soil mineral N and the abundance of nosZ and nirK genes following the 4% biochar application were more augmented, thereby leading to a remarkable reduction in soil N 2 O emissions. The MBC content in the soil also increased with the BC applications, and the maximum MBC contents of 655 and 428 mg kg −1 dry soil were recorded with the 4% biochar application under 50% and 90% WFPS, respectively. Moreover, in comparison with the control, 4% BC mitigated soil N 2 O emissions by 83%, whereas cumulative N 2 O emissions were mitigated by 49%. In comparison with 90% WFPS, 50% WFPS produced 35% more N 2 O emissions. However, the biochar applications significantly (p < 0.05) reduced N 2 O emissions under both WFPS values owing to an increase in soil pH, which activated mineral N (NH 4 +-N and NO 3 −-N) and enhanced the abundance of nosZ and nirK genes. These results suggest that biochar applications can substantially diminish soil N 2 O emissions by triggering soil pH, soil C and N pools, and the abundance of nosZ and nirK genes.

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“…The increase in aeration and O 2 availability resulting from biochar application contributes to further reduction in N 2 O emissions by creating adverse conditions for microbial DNF [203]. Additionally, biochar has a good adsorption potential, resulting in a considerable adsorption on its surface of NH 4 + and NO 3 − [213], which reduces the N availability for N 2 O production [214]. Biochar application also influences soil gene abundance, including nirK and nosZ [215].…”

Section: Biochar Applicationmentioning

confidence: 99%

Soil Carbon, Nitrogen Sequestration and Greenhouse Gas Mitigation under Global Change

2023

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The Effect of Soil Type on Gaseous Emissions from Flooded Rice Fields in Portugal

Cited by 7 publications

References 28 publications

Direct and Residual Impacts of Olive-Mill Waste Application to Rice Soil on Greenhouse Gas Emission and Global Warming Potential under Mediterranean Conditions

Direct and Residual Impacts of Olive-Mill Waste Application to Rice Soil on Greenhouse Gas Emission and Global Warming Potential under Mediterranean Conditions

N2O Emissions Mitigation in Acidic Soil Following Biochar Application Under Different Moisture Regimes

Soil Carbon, Nitrogen Sequestration and Greenhouse Gas Mitigation under Global Change

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