Long-term application of organic manure and nitrogen fertilizer on N2O emissions, soil quality and crop production in a sandy loam soil

Ling, Meng; Ding, Weixin; Cai, Zucong

doi:10.1016/j.soilbio.2005.03.007

Cited by 328 publications

(186 citation statements)

References 28 publications

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“…There was no difference in final NO 3 − concentration between CP and BP, which were much lower than those in soils without rape. Final NO 3 − and NH 4 + concentrations in B were lower in those with in C. Planting rape also increased soil pH, but the effect was not as strong as those treated with biochar. Planting rape had no effect on TC, however decreased TN, resulting in the increase of the C/N ratio.…”

Section: ■ Experimental Sectionmentioning

confidence: 64%

“…3 Acidification can affect both the soil biota and biogeochemical processes, 4 thus decreasing agricultural production. Furthermore, a lower soil pH leads to a higher N 2 O: N 2 ratio of soil emitted gases 5,6 thus posing environmental risks, such as climate change.…”

Section: ■ Introductionmentioning

confidence: 99%

“…Although the ways to decrease nitrification N 2 O have not been well characterized, it has been shown that the decreases of soil N 2 O emissions were often accompanied by lower nitrification rates. 16 Several hypotheses have been proposed for N 2 O decreases by biochar, including: (i) biochar reduces levels of denitrification via improving soil aeration; 17 (ii) biochar increases the adsorption of NO 3 − , thus decreasing substrate availability for denitrification; 18 (iii) biochar increases soil pH therefore driving denitrification thorough to N 2 ; 18 (iv) biochar sorbs N 2 O; 19 and (v) biochar contains ethylene which could inhibit nitrification and thus the formation of NO 3 − and N 2 O. 20 More studies are needed to clarify the effect of biochar, especially when it is used as a soil amendment in agricultural production.…”

Section: ■ Introductionmentioning

confidence: 99%

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Biochar Impacts Soil Microbial Community Composition and Nitrogen Cycling in an Acidic Soil Planted with Rape

Wang

et al. 2014

Environ. Sci. Technol.

432

170

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Biochar has been suggested to improve acidic soils and to mitigate greenhouse gas emissions. However, little has been done on the role of biochar in ameliorating acidified soils induced by overuse of nitrogen fertilizers. In this study, we designed a pot trial with an acidic soil (pH 4.48) in a greenhouse to study the interconnections between microbial community, soil chemical property changes, and N 2 O emissions after biochar application. The results showed that biochar increased plant growth, soil pH, total carbon, total nitrogen, C/N ratio, and soil cation exchange capacity. The results of high-throughput sequencing showed that biochar application increased α-diversity significantly and changed the relative abundances of some microbes that are related with carbon and nitrogen cycling at the family level. Biochar amendment stimulated both nitrification and denitrification processes, while reducing N 2 O emissions overall. Results of redundancy analysis indicated biochar could shift the soil microbial community by changing soil chemical properties, which modulate N-cycling processes and soil N 2 O emissions. The significantly increased nosZ transcription suggests that biochar decreased soil N 2 O emissions by enhancing its further reduction to N 2 .

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Section: ■ Experimental Sectionmentioning

confidence: 64%

Section: ■ Introductionmentioning

confidence: 99%

Section: ■ Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Biochar Impacts Soil Microbial Community Composition and Nitrogen Cycling in an Acidic Soil Planted with Rape

Wang

et al. 2014

Environ. Sci. Technol.

432

170

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“…About 30% of the national fertilizer is being applied in this region for maintaining the high crop yield . The amount of chemical N fertilizer applied to the region also greatly stimulates N 2 O, NO x and NH 3 emissions (Walsh, 2001;Dong et al, 2001Dong et al, , 2007Cai et al, 2002;Zhang et al, 2004;Wang et al, 2004;Meng et al, 2005;Ding et al, 2007). To our knowledge, most of the studies in this region mainly focused on N 2 O emission, and only one and three studies investigated NO exchange (Walsh, 2001) and NH 3 volatilization (Cai et al, 2002;Zhang et al, 2004;Wang et al, 2004), respectively.…”

Section: Introductionmentioning

confidence: 99%

Emissions of nitrous oxide, nitrogen oxides and ammonia from a maize field in the North China Plain

Zhang

Liu

et al. 2011

Atmospheric Environment

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a b s t r a c tThe exchange fluxes of nitrous oxide (N 2 O), nitrogen oxides (NO x ) and ammonia (NH 3 ) from a maize field with three different treatments were simultaneously measured using static and dynamic chambers in the North China Plain (NCP) from June 28 to October 11, 2009. The three treatments included control plot (CK, without crop, fertilization and irrigation), fertilizer N plot (NP) and wheat straw returning plus fertilizer N plot (SN). N-fertilizer application greatly stimulated the emissions of N 2 O, NO x and NH 3 , with durations of about 10 days for N 2 O and NO, and about 7 days for NH 3 . Fertilizer loss rates were 1.08% (NP plot) and 1.20% (SN plot) as N 2 OeN, were 1.93% (NP plot) and 0.76% (SN plot) as NOeN, and were 5.24% (NP plot) and 3.03% (SN plot) as NH 3 eN. In comparison with the NP plot, the significant low fertilizer loss rates as NOeN and NH 3 eN from the SN plot indicated that the wheat straw returning to the field could reduce NO x and NH 3 emissions. The molar ratio of NO/N 2 O was greater than unity for most data during the pulse emission periods induced by fertilization, and thus, nitrification was the dominant process for N 2 O and NO emissions during these periods. Considering the significant amount (>80%) of N 2 O and NO x emissions occurred during the pulse emission periods, the emissions of NO x and N 2 O from the investigated field were mainly ascribed to nitrification process.

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“…This is consistent with expectations because use of balanced fertilizers increases NUE and reduces N losses (Gordon 2005), while use of slowrelease fertilizer reduces N 2 O emissions from agricultural systems (Shoji et al 2001;Halvorson et al 2009;Ji et al 2012), but the size of the reduction varies depending on land use and soil type (Akiyama et al 2010). Fertilizers (mineral or organic) are the main anthropogenic sources of N 2 O emissions (Meng et al 2005), with synthetic fertilizers contributing 60 % of N 2 O emissions (Anand et al 2006). Moreover, there is a linear relationship between the amount of N fertilizers applied and N 2 O emissions (Gregorich et al 2005).…”

Section: N 2 O Emissionsmentioning

confidence: 99%

Assessment of nitrate leakage and N2O emission from five environmental-friendly agricultural practices using fuzzy logic method and empirical formula

Qin

Wang

et al. 2015

Environ Monit Assess

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Agricultural nonpoint source pollution in China has been the major environmental problem, so environmental-friendly agricultural practices (EAPs) must be promoted to improve environmental quality. However, the most suitable practices for each agricultural region must first be identified. Thus, in the presented study a fuzzy-logic method and a revised empirical formula were used to assess nitrate leakage and N 2 O emissions, respectively, and to compare five EAPs in Xinxiang, a major grain-producing county in Henan Province, China. The required information was collected in face-to-face interviews with 10 extension service experts from the county, using a questionnaire to explore their opinions of the EAPs currently adopted by smallholder farmers, as well as the amounts, frequencies, varieties and proportions of nitrogen fertilizers applied annually. The results indicate that reduced tillage, soil testing and fertilizer recommendations would be the most appropriate practices to initially promote on a large scale in Xinxiang.

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Long-term application of organic manure and nitrogen fertilizer on N2O emissions, soil quality and crop production in a sandy loam soil

Cited by 328 publications

References 28 publications

Biochar Impacts Soil Microbial Community Composition and Nitrogen Cycling in an Acidic Soil Planted with Rape

Biochar Impacts Soil Microbial Community Composition and Nitrogen Cycling in an Acidic Soil Planted with Rape

Emissions of nitrous oxide, nitrogen oxides and ammonia from a maize field in the North China Plain

Assessment of nitrate leakage and N2O emission from five environmental-friendly agricultural practices using fuzzy logic method and empirical formula

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