Practices for Reducing Greenhouse Gas Emissions from Rice Production in Northeast Thailand

Arunrat, Noppol; Pumijumnong, Nathsuda

doi:10.3390/agriculture7010004

Cited by 25 publications

(12 citation statements)

References 52 publications

(41 reference statements)

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“…N 2 O emissions contribute much less than CH 4 emissions to the global warming potential in Indonesia, 43 Japan, 19,44 California, 45 the Philippines 22 and Uruguay 46 . In northeast Thailand, Arunrat and Pumijumnong 47 reported that the contribution of CH 4 (88%) to net GWP is much higher than those of N 2 O (8%) and CO 2 (4%) in rice production. Therefore, reducing CH 4 emissions from rice soil is the most effective way to mitigate the total global warming potential from rice production.…”

Section: Discussionmentioning

confidence: 99%

Greenhouse gas emissions, grain yield and water productivity: a paddy rice field case study based in Myanmar

Win

Bellingrath-Kimura

et al. 2020

Greenhouse Gases

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Climate change is a vital environmental issue that significantly affects rice productivity. Rice paddy fields are one of the greatest anthropogenic sources of methane (CH 4) and nitrous oxide (N 2 O) emissions. To evaluate the combined effects of manure amendment and water management on GHG emissions, grain yield and water productivity per rice yield in a lowland rice field with a sandy clay loam soil in Myanmar, this study was conducted with a split-plot design. Two water management practices (continuous flooding [CF] and alternate wetting and drying [AWD]) and four levels of cow dung manure (0, 2.5, 5.0 and 7.5 t ha −1) were applied with three replications in the dry (February-May) and wet (July-October) seasons in 2017. In the dry season, significantly higher cumulative methane (CH 4) emissions (50.5%) were recorded in CF than in AWD, while cumulative nitrous oxide (N 2 O) emissions were 70% higher in AWD than in CF, although the difference was not significant. Manure application showed no effect on CH 4 and N 2 O emissions compared with the no-manure control, irrespective of application level. In the wet season, significantly higher cumulative CH 4 emissions (65.2%) were again recorded in CF than in AWD; however, the cumulative N 2 O emissions were similar between CF and AWD. Methane and N 2 O emissions in the wet season were 65.8 and 35.8% higher, respectively, than those in the dry season. In both seasons, higher grain yields (1.8% in dry and 7.6% in wet) and higher water productivity (130% in dry and 31% in wet) were recorded in AWD than in CF. Increased grain yields (18.9% in dry and 7.7% in wet) and water productivity (25.5% in dry and 15.8% in wet) were recorded in the manure treatments compared to those in the no-manure treatment. This study presents quantitative data on how manure amendment and water management affected GHG emissions in a paddy field in Myanmar.

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Section: Discussionmentioning

confidence: 99%

Greenhouse gas emissions, grain yield and water productivity: a paddy rice field case study based in Myanmar

Win

Bellingrath-Kimura

et al. 2020

Greenhouse Gases

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“…It was found that the nutrient omission response to the soil when in standing water disappears from the paddies. However, submerge conditions lead to chemical changes that noticeably stimulate SOC dynamics under O 2 limited conditions [19,104]. Via many processes of an oxidation-reduction reaction, SOC dynamics change soil pH, reduction of C, nitrogen (N), sulfur (S), and redox potential in a waterlogged rice field [105].…”

Section: Influence Of Management Practices On Soil Organic Carbon Andmentioning

confidence: 99%

Soil Organic Carbon in Sandy Paddy Fields of Northeast Thailand: A Review

et al. 2020

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Soil organic carbon (SOC) improvement has become a sustainable strategy for enhancing soil resilience and reducing greenhouse gas (GHG) emissions in the rice cropping system. For tropical soils, the SOC accumulation was limited by the unfavorable environment, likely the sandy soil area in Northeast (NE) Thailand. This review aims to quantify and understand SOC in sandy paddy fields of NE Thailand. The existing research gap for alternative management practices is also highlighted to increase ecological and agronomic values. We review previous studies to determine the factors affecting SOC dynamics in sandy paddy fields, in order to enhance SOC and sustain rice yields. High sand content, up to 50% sand, was found in 70.7% of the observations. SOC content has ranged from 0.34 to 31.2 g kg−1 for the past four decades in paddy rice soil of NE Thailand. The conventional and alternative practice managements were chosen based on either increasing rice crop yield or improving soil fertility. The lack of irrigation water during the mild dry season would physically affect carbon sequestration as the soil erosion accelerates. Meanwhile, soil chemical and microbial activity, which directly affect SOC accumulation, would be influenced by nutrient and crop residue management, including chemical fertilizer, manure and green manure, unburned rice straw, and biochar application. Increasing SOC content by 1 g kg−1 can increase rice yield by 302 kg ha−1. The predicted carbon saturation varied tremendously, from 4.1% to 140.6% (52% in average), indicating that the sandy soil in this region has the potential for greater SOC sequestration. Our review also suggests that broadening the research of rice production influenced by sandy soil is still required to implement adaptive management for sustainable agriculture and future food security.

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“…Soil organic carbon (SOC) storage is the key function of agricultural soil, as it interacts with other functions, e.g., soil fertility, nutrient cycling, temperature, and pH balance (Lal et al, 2007;Six et al, 2002). It is also related to sustainable strategies to mitigate the emission of greenhouse gases (GHGs) (Arunrat and Pumijumnong, 2017;Rajan et al, 2017). Increasing SOC content by 1 g kg -1 can increase rice yield by 302 kg ha -1 (Arunrat et al, 2020a).…”

Section: Discussionmentioning

confidence: 99%

Low fertilizer inputs do not adversely affect yield or performance of Indica hybrid rice

Huang

Hossain

et al. 2022

Sci. agric. (Piracicaba, Braz.)

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The enhancement of rice production numbers can be achieved by using quality rice cultivars and fertilizers. The double rice cropping model has given rise to an important rice production system in southern China. Exploring the possibility of whether hybrid vigor could make a substantial contribution to early and late season rice production, and how the heterosis expression of hybrid rice functions under different levels of fertilizer application is of great significance. The objective of this study was to evaluate the grain yield and associated plant traits of popular hybrid and inbred rice varieties with large-scale promotion under conditions of customary (high) and combined (low) fertilization in the early and late seasons of 2017-18 in Changsha County, Hunan Province, China. We found that hybrid rice varieties displayed their respective advantages in the early and late rice seasons, but the advantages in their relative yield traits varied. The leading advantages of early season rice were effective panicle number per hill (EPN), 1000-grain weight (KGW), harvest index (HI), yield, and nitrogen use efficiency (NUE), whereas in late season rice, the foremost advantages were grain number per panicle (GNP), HI, yield, and NUE. The EPN was the prime advantage of early season hybrid rice with a short growth period, and the GNP was the main advantage of late season hybrid rice with a long growth period. Notably, the main yield advantage of hybrid rice was stronger under combined (low) fertilization than under customary (high) fertilization. Hence, high yield can be achieved by selecting the best hybrid rice varieties supported by combined fertilization (lower fertilizer use with higher efficiency).

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Practices for Reducing Greenhouse Gas Emissions from Rice Production in Northeast Thailand

Cited by 25 publications

References 52 publications

Greenhouse gas emissions, grain yield and water productivity: a paddy rice field case study based in Myanmar

Greenhouse gas emissions, grain yield and water productivity: a paddy rice field case study based in Myanmar

Soil Organic Carbon in Sandy Paddy Fields of Northeast Thailand: A Review

Low fertilizer inputs do not adversely affect yield or performance of Indica hybrid rice

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