Impacts of biochar on bioavailability of the fungicide azoxystrobin: A comparison of the effect on biodegradation rate and toxicity to the fungal community

被引:70
作者
Sopena, Fatima [1 ]
Bending, Gary D. [1 ]
机构
[1] Univ Warwick, Sch Life Sci, Coventry CV4 7AL, W Midlands, England
关键词
Pesticide bioavailability; Sorption/desorption; Biochar; Azoxystrobin; Pesticide toxicity; STROBILURIN FUNGICIDES; PESTICIDE ADSORPTION; PARTICULATE MATTER; SOIL; DEGRADATION; SORPTION; CARBON; BACTERIAL; BENEFITS; EFFICACY;
D O I
10.1016/j.chemosphere.2012.12.031
中图分类号
X [环境科学、安全科学];
学科分类号
083001 [环境科学];
摘要
There is great interest in using biochar (BC) as a soil amendment to provide a long-term repository of carbon to mitigate climate change. BC can have major impacts on soil biogeochemical cycling processes, largely by the sorption and protection of organic matter from microbial turnover. Application of BC to agricultural soil could also affect the efficacy, fate and environmental impact of pesticides. In the current study we investigated the effect of BC on bioavailability of the fungicide azoxystrobin in soil. We found that application of BC had no effect on sorption or degradation of azoxystrobin, even at a rate of 2% w/w. While azoxystrobin reduced dehydrogenase activity, BC addition greatly increased dehydrogenase, although the inhibitory effect of azoxystrobin was still evident in BC amended soil. Using Terminal Restriction Fragment Length Polymorphism of fungal SSU rRNA gene ITS regions it was found that azoxystrobin altered the structure of the soil fungal community, although this effect was dampened by BC addition. BC application had minor effects on fungal community structure. We conclude that measurement of the effect of BC on pesticide bioavailability by analysis of biodegradation rate and non-target effects on fungal community structure gave contrasting conclusions. (C) 2013 Elsevier Ltd. All rights reserved.
引用
收藏
页码:1525 / 1533
页数:9
相关论文
共 52 条
[1]
Azoxystrobin and soil interactions: degradation and impact on soil bacterial and fungal communities [J].
Adetutu, E. M. ;
Ball, A. S. ;
Osborn, A. M. .
JOURNAL OF APPLIED MICROBIOLOGY, 2008, 105 (06) :1777-1790
[2]
[Anonymous], 2000, 200015 RG PEST MAN R
[3]
Potential mechanisms for achieving agricultural benefits from biochar application to temperate soils: a review [J].
Atkinson, Christopher J. ;
Fitzgerald, Jean D. ;
Hipps, Neil A. .
PLANT AND SOIL, 2010, 337 (1-2) :1-18
[4]
Reconciling apparent variability in effects of biochar amendment on soil enzyme activities by assay optimization [J].
Bailey, Vanessa L. ;
Fansler, Sarah J. ;
Smith, Jeffrey L. ;
Bolton, Harvey, Jr. .
SOIL BIOLOGY & BIOCHEMISTRY, 2011, 43 (02) :296-301
[5]
Fungicide impacts on microbial communities in soils with contrasting management histories [J].
Bending, Gary D. ;
Rodriguez-Cruz, M. Sonia ;
Lincoln, Suzanne D. .
CHEMOSPHERE, 2007, 69 (01) :82-88
[6]
Spatial variation in the degradation rate of the pesticides isoproturon, azoxystrobin and diflufenican in soil and its relationship with chemical and microbial properties [J].
Bending, GD ;
Lincoln, SD ;
Edmondson, RN .
ENVIRONMENTAL POLLUTION, 2006, 139 (02) :279-287
[7]
Fungicidal effects of azoxystrobin and epoxiconazole on phyllosphere fungi, senescence and yield of winter wheat [J].
Bertelsen, JR ;
de Neergaard, E ;
Smedegaard-Petersen, V .
PLANT PATHOLOGY, 2001, 50 (02) :190-205
[8]
Impact of agricultural inputs on soil organisms -: a review [J].
Bunemann, E. K. ;
Schwenke, G. D. ;
Van Zwieten, L. .
AUSTRALIAN JOURNAL OF SOIL RESEARCH, 2006, 44 (04) :379-406
[9]
Dairy-Manure Derived Biochar Effectively Sorbs Lead and Atrazine [J].
Cao, Xinde ;
Ma, Lena ;
Gao, Bin ;
Harris, Willie .
ENVIRONMENTAL SCIENCE & TECHNOLOGY, 2009, 43 (09) :3285-3291
[10]
Effects of the fungicides benomyl, captan and chlorothalonil on soil microbial activity and nitrogen dynamics in laboratory incubations [J].
Chen, SK ;
Edwards, CA ;
Subler, S .
SOIL BIOLOGY & BIOCHEMISTRY, 2001, 33 (14) :1971-1980