Alternate Wetting and Drying of Rice Reduced CH4 Emissions but Triggered N2O Peaks in a Clayey Soil of Central Italy

Lagomarsino, Alessandra; Agnelli, A.; Linquist, Bruce A.; Adviento-Borbe, Maria Arlene; Gavina, Giacomo; Ravaglia, S.; Ferrara, Rossana Monica

doi:10.1016/s1002-0160(15)60063-7

Cited by 103 publications

(49 citation statements)

References 69 publications

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“…Similarly, in the Arkansas study, the dry‐down occurred ∼3 wk after establishment of the permanent flood, when it is expected that soil mineral N levels would be low (Norman et al, 2013). In contrast, Lagomarsino et al (2016) reported very high N 2 O emissions from AWD treatments in Italy, where dry‐downs likely occurred when there were high levels of soil mineral N present, and as a result, they showed that the global warming potential (CH 4 + N 2 O) was higher in the AWD treatments than in the continuously flooded treatments. This analysis highlights the importance of managing both water and N to reduce CH 4 and N 2 O emissions.…”

Section: Resultsmentioning

confidence: 92%

Greenhouse Gas Emissions and Management Practices that Affect Emissions in US Rice Systems

et al. 2018

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Previous reviews have quantified factors affecting greenhouse gas (GHG) emissions from Asian rice ( L.) systems, but not from rice systems typical for the United States, which often vary considerably particularly in practices (i.e., water and carbon management) that affect emissions. Using meta-analytic and regression approaches, existing data from the United States were examined to quantify GHG emissions and major practices affecting emissions. Due to different production practices, major rice production regions were defined as the mid-South (Arkansas, Texas, Louisiana, Mississippi, and Missouri) and California, with emissions being evaluated separately. Average growing season CH emissions for the mid-South and California were 194 (95% confidence interval [CI] = 129-260) and 218 kg CH ha season (95% CI = 153-284), respectively. Growing season NO emissions were similar between regions (0.14 kg NO ha season). Ratoon cropping (allowing an additional harvestable crop to grow from stubble after the initial harvest), common along the Gulf Coast of the mid-South, had average CH emissions of 540 kg CH ha season (95% CI = 465-614). Water and residue management practices such as alternate wetting and drying, and stand establishment method (water vs. dry seeding), and the amount of residue from the previous crop had the largest effect on growing season CH emissions. However, soil texture, sulfate additions, and cultivar selection also affected growing season CH emissions. This analysis can be used for the development of tools to estimate and mitigate GHG emissions from US rice systems and other similarly mechanized systems in temperate regions.

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Section: Resultsmentioning

confidence: 92%

Greenhouse Gas Emissions and Management Practices that Affect Emissions in US Rice Systems

et al. 2018

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“…Grain yield was not affected by AWD or higher in AWD treatment compared to the flooding control. On the other hand, Lagomarsino et al (2016) reported in a 2-year study in Italian paddy field that 70% water consumption and 33% yields, and 97% CH 4 emissions were reduced by implementation of AWD as compared to permanent flooded fields. N 2 O emissions were increased by more than 5-fold under AWD.…”

Section: Introductionmentioning

confidence: 96%

Evaluating the effects of alternate wetting and drying (AWD) on methane and nitrous oxide emissions from a paddy field in Thailand

Chidthaisong

Cha-un

Rossopa

et al. 2017

Soil Science and Plant Nutrition

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Alternate wetting and drying (AWD) is a water-saving irrigation technique in a paddy field that can reduce the emission of methane, a potent greenhouse gas (GHG). It is being adopted to Asian countries, but different results are reported in literatures on methane, nitrous oxide emission, and rice productivity under AWD. Therefore, the local feasibility needs to be investigated before its adoption by farmers. The current study carried out a 3-year experiment in an acid sulfate paddy field in Prachin Buri, Thailand. During five crops (3 dry and 2 wet seasons), three treatments of water management were compared: continuous flooding (CF), flooding whenever surface water level declined to 15 cm below the soil surface (AWD), and site-specific AWD (AWDS) that weakened the criteria of soil drying (AWDS). Methane and nitrous oxide emissions were measured by a closed chamber method. Rice grain yield did not significantly (p < 0.05) differ among the three treatments. The amount of total water use (irrigation + rainfall) was significantly reduced by AWD (by 42%) and AWDS (by 34%) compared to CF. There was a significant effect of treatment on the seasonal total methane emission; the mean methane emission in AWD was 49% smaller than that in CF. The seasonal total nitrous oxide emission and the global warming potential (GWP) of methane and nitrous oxide did not differ among treatments. The contribution of nitrous oxide to the GWP ranged 39-62% among three treatments in dry season whereas 3-13% in wet season. The results indicate that AWD is feasible in terms of GHG emission mitigation, rice productivity, and water saving in this site, especially in dry season. ARTICLE HISTORY

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“…In addition, the N 2 O emissions following soil drainage could be due to the release of dissolved and entrapped N 2 O formed before drainage [4,13]. An increase in N 2 O fluxes after draining plots is well-known and it has been reported by many other authors [4,5,25,43].…”

Section: Nitrous Oxide Fluxes and Cumulative Emissionsmentioning

confidence: 73%

“…Although rice paddies also emit N 2 O, methane emissions contribute to almost 90% of the global warming potential (GWP) in flooded rice systems [3]. Despite the low contribution of N 2 O to GWP, both gases have to be considered together when mitigation practices are developed, since the mitigation practices that focus on CH 4 emission reduction tend to increase N 2 O emissions [4][5][6].…”

Section: Introductionmentioning

confidence: 99%

Greenhouse Gas Emissions as Affected by Fertilization Type (Pig Slurry vs. Mineral) and Soil Management in Mediterranean Rice Systems

2020

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The great increase in livestock production in some European areas makes it necessary to recycle organic slurries and manures and to integrate them in crop production. In Northeast Spain, the application of pig slurry (PS) is being extended to alternative crops such as rice due to the great increase in pig production. However, there is a lack of information of the effect of substitution of synthetic fertilizers with pig slurry on greenhouse gas (GHG) emissions in rice crop, and this information is key for the sustainability of these agricultural systems. The aim of this study was to evaluate the effect of the substitution of mineral fertilizers by PS on GHG emissions in Mediterranean flooded rice cultivation conditions under optimal nitrogen (N) fertilization. Two field experiments were carried out in two different (contrasting) soil types with different land management. Site 1 had been cultivated for rice in the previous three years with no puddling practices. Site 2 had been cultivated for rice for more than 15 years with puddling tillage practices and had higher organic matter content than site 1. The cumulative nitrous oxide emissions during the crop season were negative at both sites, corroborating that under flooded conditions, methane is the main contributor to global warming potential rather than nitrous oxide. The substitution of mineral fertilizer with PS before seeding at the same N rate did not increase emissions in both sites. However, at site 1 (soil with lower organic matter content), the higher PS rate applied before seeding (170 kg N ha−1) increased methane emissions compared to the treatments with lower PS rate and mineral fertilizer before seeding (120 kg N ha−1) and complemented with topdressing mineral N. Thus, a sustainable strategy for inclusion of PS in rice fertilization is the application of moderate PS rates before seeding (≈120 kg N ha−1) complemented with mineral N topdressing.

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Alternate Wetting and Drying of Rice Reduced CH4 Emissions but Triggered N2O Peaks in a Clayey Soil of Central Italy

Cited by 103 publications

References 69 publications

Greenhouse Gas Emissions and Management Practices that Affect Emissions in US Rice Systems

Greenhouse Gas Emissions and Management Practices that Affect Emissions in US Rice Systems

Evaluating the effects of alternate wetting and drying (AWD) on methane and nitrous oxide emissions from a paddy field in Thailand

Greenhouse Gas Emissions as Affected by Fertilization Type (Pig Slurry vs. Mineral) and Soil Management in Mediterranean Rice Systems

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