Interaction of Changes in pH and Urease Activity Induced by Biochar Addition Affects Ammonia Volatilization on an Acid Paddy Soil Following Application of Urea

Huang, Min; Zhou, Xuefeng; Chen, Jiana; Cao, Fuliang; Jiang, Ligeng; Zou, Yingbin

doi:10.1080/00103624.2016.1253725

Cited by 28 publications

(11 citation statements)

References 26 publications

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“…This increased NH 3 volatilization was attributed to an increase in soil pH, which is generally positively correlated with NH 3 volatilization 39 . Similar results have also been reported in short-term experiments in previous studies 27 – 29 . These facts indicate that the significantly negative effect of longer continuous applications of biochar on fertilizer N uptake in this study was attributed to both decreased fertilizer N availability and increased fertilizer N loss.…”

Section: Discussionsupporting

confidence: 92%

“…In the late season in 2017, daily NH 3 volatilization was measured in the micro-plots according to the procedures described by Huang et al . 29 . Total NH 3 volatilization was calculated as the sum of the daily NH 3 volatilization.…”

Section: Methodsmentioning

confidence: 99%

“…It has been documented that biochar application can reduce nitrous oxide emission and N leaching from rice fields 24 , 25 . However, because biochar is typically alkaline 26 , its application can increase soil pH and may subsequently increase ammonia (NH 3 ) volatilization from rice soils 27 – 29 . These facts indicate that biochar application may lead to changes in N uptake and utilization in rice.…”

Section: Introductionmentioning

confidence: 99%

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Continuous applications of biochar to rice: Effects on nitrogen uptake and utilization

Huang

Fan

Chen

et al. 2018

Sci Rep

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Improving soil quality is critical for increasing rice yield, and biochar could be a beneficial soil amendment for high yield. This study was conducted to determine the effects of continuous (repeated seasonal) applications of biochar on nitrogen (N) uptake and utilization in rice. A fixed field experiment was done in Yongan Town, Hunan Province, China, in six continuous seasons (the early and late rice-growing seasons from 2015 to 2017). Results showed that biochar application did not significantly affect soil N uptake in the first four seasons. The effect of biochar application on fertilizer N uptake was not significant in three of the first four seasons. In the fifth and sixth seasons, biochar application resulted in 14–26% increases in soil N uptake but 19–26% decreases in fertilizer N uptake. Soil N availability did not explain the increased soil N uptake with biochar application. The decreased fertilizer N uptake with biochar application was attributed to both decreased fertilizer N availability and increased N loss through ammonia volatilization. As a consequence of a compensation between the increased soil N uptake and the decreased fertilizer N uptake, the effect of biochar application on total N uptake was not significant in the fifth and sixth seasons. However, biochar application led to 7–11% increases in internal N use efficiency in the fifth and sixth seasons and 6% increase in grain yield in the sixth season. Our study suggests that the effects of repeated seasonal applications of biochar on N uptake and utilization in rice depend on the duration of biochar application. Longer continuous applications of biochar can increase internal N use efficiency and grain yield in rice with insignificant change in total N uptake.

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Section: Discussionsupporting

confidence: 92%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Continuous applications of biochar to rice: Effects on nitrogen uptake and utilization

Huang

Fan

Chen

et al. 2018

Sci Rep

Self Cite

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“…Then, the EAl 3+ reduction, subsequently, enhances the microbial activity and nitrification degree, which improves the supply of soil nutrients (Jin et al 2019;Pietri and Brookes 2008). The remarkable reduction of N uptake and usage efficiency with the PST10 treatment may be due to the immobilization of inorganic N by microorganisms caused by high C/N of biochar (Clough et al 2013), and the enhanced volatilization of mineral fertilizer N resulted from alkaline pH of biochar (Huang et al 2017). Hence, in order to optimize crop response to TS biochar, appropriate biochar incorporation rate was needed.…”

Section: Discussionmentioning

confidence: 99%

Response in Physicochemical Properties of Tobacco-Growing Soils and N/P/K Accumulation in Tobacco Plant to Tobacco Straw Biochar

Zheng

Song

Guan

et al. 2020

J Soil Sci Plant Nutr

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The purpose of this study was to investigate the response of physicochemical properties of tobacco-growing soils and N/P/K accumulation of tobacco plant to tobacco straw biochar. Two contrasting tobacco-growing soils of paddy soil (Ultisol in USDA taxonomy) and brown soil (Alfisol in USDA taxonomy) were selected to conduct the pot experiments. Five addition rates (w/w) of tobacco straw biochar of 0%, 1%, 2%, 4%, and 10% without or with tobacco (Nicotiana tabacum) were applied in a greenhouse. The 7.41-35.90% increase of soil field capacity, 0.71-15.11% increase of total porosity, 3.40-17.55% increase of capillary porosity, 15.98-293.13% increase of organic matter, 6.52-58.75% increase of available phosphorus, 109.07-1789.70% increase of potassium, 3.23-147.71% increase of exchangeable cation, and 12.13-48.48% increase of soil pH were observed after biochar addition. And this improvement increased with the increasing application rate. The same trend was also found in the tobacco N/P/K uptake in the biochar application range of 0-4% and subsequently decreased at 10% rate. Meanwhile, biochar decreased the soil bulk density of 0.68-14.06%. The step regression equation showed that the exchangeable potassium and aluminum for Ultisol as well as the exchangeable potassium and hydrogen for Alfisol were the predominant factors that determined the soil pH. According to the PCA results, exchangeable calcium > exchangeable potassium > exchangeable cation > pH > organic matter > exchangeable magnesium > available potassium > available phosphorus and organic matter > exchangeable potassium > available phosphorus > exchangeable cation > available potassium > pH > exchangeable calcium had a significant impact on soil fertility of Ultisol and Alfisol, respectively. Finally, a comprehensive evaluation of soil fertility by PCA revealed that ST10 (10% rate, w/w) performed best, followed by the ST4 (4% rate, w/w) in both soils. The application of tobacco straw biochar, with appropriate rate, is an effect method to improve physicochemical properties of tobacco-growing soil and N/P/ K uptake of tobacco plant.

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“…Changes in NH4 + -N influenced by biochar addition affect NH3 volatilization in acidic soils [23]. The NH4 + -N ( Fig.…”

Section: Nh4 + -N and Total N Concentration Of Topsoil (0-15 Cm)mentioning

confidence: 99%

Biochar Effectively Reduces Ammonia Volatilization From Nitrogen-Applied Soils in Tea and Bamboo Plantations

Chu¹,

Hennayake²,

Sun³

2019

Phyton

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Intensive practices in forest soils result in dramatic nitrogen (N) losses, particularly ammonia (NH3) volatilization, to adjacent environmental areas. A soil column experiment was conducted to evaluate the effect of bamboo biochar on NH3 volatilization from tea garden and bamboo forest soils. The results showed that biochar amendment effectively reduced NH3 volatilization from tea garden and bamboo forest soil by 79.2% and 75.5%, respectively. The soil pH values increased by 0.53-0.61 units after biochar application. The NH4 +-N and total N of both soils were 13.8-29.7% and 34.0-41.9% higher under the biochar treatments than under the control treatment, respectively. In addition, the soil water contents of the two biochar-amended soils were significantly higher (P < 0.05), by 10.7-12.5%, than that of the soils without biochar amendment. Therefore, biochar mitigates NH3 volatilization from the tested forest soils, which was due to the increases in soil NH4 +-N, total N and water contents after biochar amendment. Our main findings suggest that biochar addition is an effective management option for sustainable forest management.

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Interaction of Changes in pH and Urease Activity Induced by Biochar Addition Affects Ammonia Volatilization on an Acid Paddy Soil Following Application of Urea

Cited by 28 publications

References 26 publications

Continuous applications of biochar to rice: Effects on nitrogen uptake and utilization

Continuous applications of biochar to rice: Effects on nitrogen uptake and utilization

Response in Physicochemical Properties of Tobacco-Growing Soils and N/P/K Accumulation in Tobacco Plant to Tobacco Straw Biochar

Biochar Effectively Reduces Ammonia Volatilization From Nitrogen-Applied Soils in Tea and Bamboo Plantations

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