Effect of cover cropping on the net global warming potential of rice paddy soil

Hwang, Hyun Young; Kim, Gil Won; Kim, Sang Yoon; Haque, Md. Mozammel; Khan, Muhammad Israr; Kim, Pil Joo

doi:10.1016/j.geoderma.2017.01.001

Cited by 64 publications

(22 citation statements)

References 47 publications

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“…Legume cover crops enhance SOM, biodiversity and carbon sequestration (Uhlen and Tveitnes 1995; Fullen and Auerswald 1998; Singh et al 1998;Lal 2004). SOC maintenance or enrichment is a key provision for increasing soil ecosystem services including carbon sequestration (Hwang et al 2017). Cover crops services in SOC pool enrichment has been reported from European countries such as Hungry, UK, Sweden, Netherlands (Johnston 1973;Van Dijk 1982;Nilsson 1986;Berzseny and Gyrffy 1997;Smith et al 1997;Fullen and Auerswald 1998;Lal 2004).…”

Section: Cover Croppingmentioning

confidence: 99%

Traditional agriculture: a climate-smart approach for sustainable food production

Singh

2017

Energ. Ecol. Environ.

225

118

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Sustainable food production is one of the major challenges of the twenty-first century in the era of global environmental problems such as climate change, increasing population and natural resource degradation including soil degradation and biodiversity loss. Climate change is among the greatest threats to agricultural systems. Green Revolution though multiplied agricultural production several folds but at the huge environmental cost including climate change. It jeopardized the ecological integrity of agroecosystems by intensive use of fossil fuels, natural resources, agrochemicals and machinery. Moreover, it threatened the age-old traditional agricultural practices. Agriculture is one of the largest sectors that sustain livelihood to maximum number of people and contribute to climate change. Therefore, a climate-smart approach to sustainable food production is the need of hour. Traditional agriculture is getting increased attention worldwide in context of sustainable food production in changing climate. The present article advocates traditional agriculture as a climate-smart approach for the sustainable food production and also deliberates the correlation between climate change and agriculture.

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Section: Cover Croppingmentioning

confidence: 99%

Traditional agriculture: a climate-smart approach for sustainable food production

Singh

2017

Energ. Ecol. Environ.

225

118

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“…(2017) and Hwang et al. (2017). Table 1 shows a negative correlation between soil CH 4 emissions and soil WFPS under the two gravel mulching treatments.…”

Section: Discussionmentioning

confidence: 96%

“…Table 1 shows a negative correlation between soil CH 4 emissions and soil WFPS under the two gravel mulching treatments. Current studies on the emissions of CH 4 generally focus on rice paddy systems (Hwang et al., 2017; Kim, Das, Hwang, & Kim, 2017), and the results show that the CH 4 fluxes in flooded fields are higher than those in drained areas (Hayashida et al., 2013). The above‐mentioned results are in agreement with studies conducted in China (Chen et al., 2017; Zhang et al., 2017), from which one can conclude that dryland soils are normally a sink for atmospheric CH 4 due to methanotrophic soils oxidizing CH 4 under dry conditions (Dalal, Allen, Livesley, & Richards, 2008).…”

Section: Discussionmentioning

confidence: 99%

“…With the current focus on climate change, sustainable agricultural technologies combine maximum crop production and low global warming potential (GWP) (Pratibha et al., 2016). Soils planted with crops emit GHGs throughout their production cycle, and the intensity of these emissions can be estimated by the GWP and the mean C footprint (CF) (Hwang et al., 2017). Many studies have calculated the net exchange of the CO 2 equivalents of CH 4 and N 2 O as a modified net GWP (Dhadli, Brar, & Black, 2016; Dubey & Lal., 2009; Liu et al., 2016).…”

Section: Introductionmentioning

confidence: 99%

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Greenhouse gas emissions and carbon footprint under gravel mulching on China's Loess Plateau

Wang

Zhang

et al. 2020

Agronomy Journal

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Gravel mulching technology has been widely verified as an effective solution to reduce evaporation and improve crop production on China's Loess Plateau, but its impacts on greenhouse gas (GHG) emissions have not been well documented. This study examined the quantification of the overall GHG emissions via estimating global warming potential (GWP), GHG intensity (GHGI), C footprint (CF), and C intensity (CI) with varying experimental treatments. A 2-yr consecutive wheat-maize rotation field experiment was conducted through monitoring GHG emissions using a closedchamber method with four treatments: CK (control with no mulching), WCK (CK plus 50 mm irrigation), GM (CK plus gravel mulching), and WGM (WCK plus GM).Compared with the CK, gravel mulching significantly decreased soil CO 2 emissions and increased soil CH 4 uptake over both cycles, although patterns of soil N 2 O emissions were controversial. Mixed effects of gravel mulching and irrigation significantly minimized the GWP over both cycles. Compared with the CK, annual GHGI in the WCK, GM, and WGM treatments dramatically decreased by 35.1, 53.7, and 55.9%, respectively, over Cycle 1 and by 16.7, 19.6, and 37.2%, respectively, over Cycle 2. The average CFs in the WCK, GM, and WGM treatments over both cycles were 4.4, 35.0, and 58.7% lower than in the CK, respectively. Gravel mulching had no significant effect on the CI during Cycle 1 but did have a significant effect during Cycle 2. Thus, gravel mulching is a recommended practice to mitigate GHG emissions and enhance the crop productivity on the Loess Plateau of China.

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“…This may be due to the texture of the soil, and we will continue to observe this indicator in future experiments (Table 2). Although Chinese milk vetch has been shown to significantly increase CH 4 emissions in previous studies (Lee et al, 2010;Hwang et al, 2017;Xu et al, 2017), it may be more suitable than other winter green manure types, such as ryegrass and legumes, due to its low C/N ratio and comparatively lower CH 4 emissions (Kim et al, 2013).…”

Section: Effects Of Chinese Milk Vetch and Straw On Rice Yield And Chmentioning

confidence: 98%

Increasing methane (CH₄) emissions and altering rhizosphere microbial diversity in paddy soil by combining Chinese milk vetch and rice straw

Aamer

et al. 2020

PeerJ

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Background Chinese milk vetch (Astragalus sinicus L.) can improve paddy soil fertility and ecology through nitrogen fixation, but it can also increase greenhouse gas emissions. Our primary objective was to investigate how Chinese milk vetch, rice straw, and nitrogen fertilization affect the methane and microbial components of the rice rhizosphere. Methods We examined the rhizosphere’s methane emissions and microbial abundance and diversity after incorporating Chinese milk vetch and rice straw into paddy soil. We used high-throughput sequencing of the 16s rRNA and ITS1 genes to study changes in the bacterial and fungal communities, respectively. Over the course of our experiment, we applied seven different treatments to the paddy soil: conventional fertilization (the control treatment) for winter fallow crops, three levels of nitrogen in Chinese milk vetch, and three levels of nitrogen in Chinese milk vetch combined with rice straw. Results Rice yield and methane emissions increased during cultivation when the soil was treated with Chinese milk vetch with and without added straw. The nitrogen application also affected the methane fluxes. Alpha diversity measurements showed that Chinese milk vetch increased the diversity of the soil fungal community but did not significantly affect the bacterial community. Chinese milk vetch affected the rhizosphere microorganism communities by increasing the number of Methanomicrobia.

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Effect of cover cropping on the net global warming potential of rice paddy soil

Cited by 64 publications

References 47 publications

Traditional agriculture: a climate-smart approach for sustainable food production

Traditional agriculture: a climate-smart approach for sustainable food production

Greenhouse gas emissions and carbon footprint under gravel mulching on China's Loess Plateau

Increasing methane (CH₄) emissions and altering rhizosphere microbial diversity in paddy soil by combining Chinese milk vetch and rice straw

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Effect of cover cropping on the net global warming potential of rice paddy soil

Cited by 64 publications

References 47 publications

Traditional agriculture: a climate-smart approach for sustainable food production

Traditional agriculture: a climate-smart approach for sustainable food production

Greenhouse gas emissions and carbon footprint under gravel mulching on China's Loess Plateau

Increasing methane (CH4) emissions and altering rhizosphere microbial diversity in paddy soil by combining Chinese milk vetch and rice straw

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Increasing methane (CH₄) emissions and altering rhizosphere microbial diversity in paddy soil by combining Chinese milk vetch and rice straw