Sawdust biochar application to rice paddy field: reduced nitrogen loss in floodwater accompanied with increased NH3 volatilization

Feng, Yanfang; Sun, Haijun; Xue, Lihong; Wang, Yueman; Yang, Linzhang; Shi, Weiming; Xing, Baoshan

doi:10.1007/s11356-017-1059-y

Cited by 29 publications

(9 citation statements)

References 46 publications

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“…To maximize food production, farmers often apply N-fertilizer at rates higher than those required by plants (Chen et al, 2018; Mavi et al, 2018). This practice is common in the subtropical regions of South China, where high rainfall and soil leaching ability lead to the low utilization rate of N fertilizers, causing not only substantial losses to the agricultural industry, but also serious environmental pollution, such as acidification of soil, eutrophication of surface water (Feng et al, 2018), and emission of the greenhouse gas N 2 O (Dong et al, 2018; Gillette et al, 2018; Hou, Li & Zhao, 2009). Studies have reported that the average application rate of N fertilizers in tobacco fields in southern China is 135 kg N ha −1 yr −1 , which is considerably higher than that in North Carolina in United States (80 kg N ha −1 yr −1 ), where the rainfall is less than that in southern China (Drake, Vann & Fisher, 2015; Zhu et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

Biochar application significantly affects the N pool and microbial community structure in purple and paddy soils

Shen

Niu

Yan

et al. 2019

PeerJ

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Background The increasing demand for food production has resulted in the use of large quantities of chemical fertilizers. This has created major environmental problems, such as increased ammonia volatilization, N2O emission, and nitrogen (N) leaching from agricultural soil. In particular, the utilization rate of N fertilizer is low in subtropical southern parts of China due to high rainfall. This causes not only large financial losses in agriculture, but also serious environmental pollution. Methods In this study, 16S rDNA-based analysis and static-chamber gas chromatography were used to elucidate the effects of continuous straw biochar application on the N pool and bacteria environment in two typical soil types, purple and paddy soils, in southern China. Results Straw biochar application (1) improved the soil N pool in both rhizosphere and non-rhizosphere soils; (2) significantly reduced the emission of N2O, with no difference in emission between 1 and 2 years of application; (3) increased the abundance of N-processing bacteria in the soil and altered the bacterial community structure; and (4) improved the tobacco yield and N use efficiency in paddy soil. These findings suggest that, in southern China, the application of straw biochar can promote N transformation in purple and paddy soils and reduce the emission of the greenhouse gas N2O.

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Section: Introductionmentioning

confidence: 99%

Biochar application significantly affects the N pool and microbial community structure in purple and paddy soils

Shen

Niu

Yan

et al. 2019

PeerJ

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“…HTC reduced pH of hydrochars, particularly in the citric acid medium (CVHCA), thus helping reduce NH3 volatilization loss at BF compared with CVP. Similar studies have also indicated an increase in NH3 loss following biochar amendment to rice paddy and coastal saline soils due to the increased soil pH (Schomberg et al, 2012;Feng et al, 2018b). Following SF1, the short-term acidifying disturbance became weak and NH3 volatilization loss became stronger under CVHW and CVHCA treatments.…”

Section: Discussionmentioning

confidence: 61%

“…The introduction of more N and H sources into soil, together with an increase in pore conductivity that allows for gas exchange, may be important factors for promoting NH3 volatilization, as shown in previous studies on biochars (Sun et al, 2017;Feng et al, 2018b;H. Sun et al, 2019b).…”

Section: Discussionmentioning

confidence: 72%

“…Generally, biochar application can reduce soil pH, and increase porosity, aeration, and redox potential, thus reducing NH3 volatilization or N2O emission by altering soil properties such as NH4 + -N adsorption and activity of nitrobacterium and denitrobacterium (Nelissen et al, 2014;Feng et al, 2017;Mandal et al, 2019;. However, these controversial results also indicate that biochar application can potentially promote NH3 volatilization (Sun et al, 2017;Feng et al, 2018b;H. Sun et al, 2019b) or N2O emissions (Duan et al, 2018;Senbayram et al, 2019;, depending on different properties of soil or feedstock of biochars.…”

Section: Introductionmentioning

confidence: 99%

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Microalgae-derived hydrochar application on rice paddy soil: Higher rice yield but increased gaseous nitrogen loss

Chu

Xue

Cheng

et al. 2020

Science of The Total Environment

Self Cite

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Hydrothermal carbonization represents a promising technique for transforming microalgae into the hydrochar with abundant phytoavailable nutrients. However, the effects of microalgae-derived hydrochars on the gaseous nitrogen (N) loss from agricultural field are still unclear. Chlorella vulgaris powder (CVP) and two Chlorella vulgaris-derived hydrochars that employ water (CVHW) or citrate acid solution (CVHCA) as the reaction medium were applied to a soil column system grown with rice. The temporal variations of nitrous oxide (N2O) emissions and ammonia (NH3) volatilization were monitored during the whole rice-growing season. Results showed that CVHW and CVHCA addition significantly increased the grain yield (by 13.5-26.8% and 10.5-23.4%) compared with control and CVP group, while concomitantly increasing the ammonia volatilization (by 53.8% and 72.9%) as well as N2O emissions (by 2.17-and 2.82-fold) from paddy soil compared to control. The microbial functional genes (AOA, AOB, nirk, nirS, nosZ) in soil indicated that CVHW and CVHCA treatment stimulated the nitrification and denitrification, and inhibited the N2O oxidation in soil. Notably, CVHW was recommended in the view of improving yield and controlling NH3 volatilization because no significant difference of the yield-scale NH3 volatilization was detected between control and CVHW treatment. This study for the first time uncovered that Chlorealla vulgaris-derived hydrochars have positive effects on rice N utilization and growth but negative effects on the atmospheric environment.

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“…The application of nitrogen fertilizer is the main reason for ammonia volatilization in fields [31,32]. When nitrogen fertilizer, such as urea, is applied to the paddy field, NH 4 + and OH − are rapidly generated through hydrolysis, leading to an increase in the NH 4 + concentration in the surface water within a short period [33,34]. Numerous studies have shown that a significant positive correlation exists between ammonia volatilization from fields and soil NH 4…”

Section: Discussionmentioning

confidence: 99%

Impact of Biochar Application on Ammonia Volatilization from Paddy Fields under Controlled Irrigation

Ding

Sung-Bum

et al. 2022

Sustainability

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Ammonia volatilization is an important nitrogen loss pathway in the paddy field ecosystem which leads to low nitrogen-utilization efficiency and severe atmospheric pollution. To reveal the influence and the mechanism of biochar application on ammonia volatilization from paddy fields under controlled irrigation, field experiments were conducted in the Taihu Lake Basin in China. The experiment consisted of three levels of biochar application (0, 20, and 40 t·ha−1) and two types of irrigation management (controlled irrigation and flood irrigation). Increasing ammonia volatilization occurred after fertilization. Biochar application reduced the cumulative ammonia volatilization from controlled-irrigation paddy fields, compared with non-biochar treatment. The cumulative ammonia volatilization in controlled-irrigation paddy fields with 40 t·ha−1 biochar application was reduced by 12.27%. The decrease in ammonia volatilization was related to the change in soil physical and soil physical–chemical properties and soil microbial activities. The high biochar application (40 t·ha−1) increased the NH4+-N content in soil (p < 0.01) and soil solution (p <0.05), increased by 64.98% and 19.72%, respectively. The application also increased the soil urease activity (p < 0.01), and high biochar application (40 t·ha−1) increased soil urease activity by 33.70%. Ammonia volatilization from paddy fields was significantly correlated with the nitrogen concentration (p < 0.01) in the soil solution and soil urease activity (p < 0.05). Meanwhile, the abundance of ammonia monooxygenase subunit A (AOA) and ammonia-oxidizing bacteria (AOB) with biochar application under controlled irrigation showed an increasing trend with rice growth. The long-term application of biochar may have a relatively strong potential to inhibit ammonia volatilization. In general, the combined application of controlled irrigation and biochar provides an eco-friendly strategy for reducing farmland N loss and improving paddy field productivity.

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Sawdust biochar application to rice paddy field: reduced nitrogen loss in floodwater accompanied with increased NH3 volatilization

Cited by 29 publications

References 46 publications

Biochar application significantly affects the N pool and microbial community structure in purple and paddy soils

Biochar application significantly affects the N pool and microbial community structure in purple and paddy soils

Microalgae-derived hydrochar application on rice paddy soil: Higher rice yield but increased gaseous nitrogen loss

Impact of Biochar Application on Ammonia Volatilization from Paddy Fields under Controlled Irrigation

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