Advanced

Biochemical properties and microbial community structure of five different soils after atrazine addition

Mahia, Jorge; Jesus Gonzalez-Prieto, Serafin; Martin, Angela; Bååth, Erland LU and Diaz-Ravina, Montserrat (2011) In Biology and Fertility of Soils 47(5). p.577-589
Abstract
Atrazine is one of the most used herbicides worldwide; however, consequences of its long-term agricultural use are still unknown. A laboratory study was performed to examine changes in microbial properties following ethylamino-N-15-atrazine addition, at recommended agronomic dose, to five acidic soils from Galicia (NW Spain) showing different physico-chemical characteristics, as well as atrazine application history. Net N mineralization was observed in all soils, with nitrate being the predominant substance formed. The highest values were detected in soils with low atrazine application history. From 2% to 23% of the atrazine-N-15 was found in the soil inorganic-N pool, the highest values being detected after 9 weeks in soils with longer... (More)
Atrazine is one of the most used herbicides worldwide; however, consequences of its long-term agricultural use are still unknown. A laboratory study was performed to examine changes in microbial properties following ethylamino-N-15-atrazine addition, at recommended agronomic dose, to five acidic soils from Galicia (NW Spain) showing different physico-chemical characteristics, as well as atrazine application history. Net N mineralization was observed in all soils, with nitrate being the predominant substance formed. The highest values were detected in soils with low atrazine application history. From 2% to 23% of the atrazine-N-15 was found in the soil inorganic-N pool, the highest values being detected after 9 weeks in soils with longer atrazine application history and lower indigenous soil N mineralization. The application of atrazine slightly reduced the amount of soil N mineralized and microbial biomass at short term. Soluble carbohydrates and beta-glucosidase and urease activity decreased with incubation time, but were not significantly affected by the single application of atrazine. Microbial community structure changed as consequence of both soil type and incubation time, but no changes in the phospholipid fatty acid (PLFA) pattern were detected due to recent atrazine addition at normal doses. The saturated 17- to 20-carbon fatty acids had higher relative abundance in soils with a longer atrazine history and fungal biomass, as indicated by the PLFA 18:2 omega 6,9, decreased with the incubation time. The results suggested that the PLFA pattern and soil N dynamics can detect the long-term impact of repeated atrazine application to agricultural soils. (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Atrazine, N mineralization, Enzyme activities, Phospholipid fatty acid, pattern
in
Biology and Fertility of Soils
volume
47
issue
5
pages
577 - 589
publisher
Springer
external identifiers
  • wos:000292972400010
  • scopus:79958276123
ISSN
0178-2762
DOI
10.1007/s00374-011-0569-x
language
English
LU publication?
yes
id
c8039ef1-ab9a-4d97-bb58-414f4933a42c (old id 2092726)
date added to LUP
2011-08-25 13:44:36
date last changed
2017-08-13 03:10:38
@article{c8039ef1-ab9a-4d97-bb58-414f4933a42c,
  abstract     = {Atrazine is one of the most used herbicides worldwide; however, consequences of its long-term agricultural use are still unknown. A laboratory study was performed to examine changes in microbial properties following ethylamino-N-15-atrazine addition, at recommended agronomic dose, to five acidic soils from Galicia (NW Spain) showing different physico-chemical characteristics, as well as atrazine application history. Net N mineralization was observed in all soils, with nitrate being the predominant substance formed. The highest values were detected in soils with low atrazine application history. From 2% to 23% of the atrazine-N-15 was found in the soil inorganic-N pool, the highest values being detected after 9 weeks in soils with longer atrazine application history and lower indigenous soil N mineralization. The application of atrazine slightly reduced the amount of soil N mineralized and microbial biomass at short term. Soluble carbohydrates and beta-glucosidase and urease activity decreased with incubation time, but were not significantly affected by the single application of atrazine. Microbial community structure changed as consequence of both soil type and incubation time, but no changes in the phospholipid fatty acid (PLFA) pattern were detected due to recent atrazine addition at normal doses. The saturated 17- to 20-carbon fatty acids had higher relative abundance in soils with a longer atrazine history and fungal biomass, as indicated by the PLFA 18:2 omega 6,9, decreased with the incubation time. The results suggested that the PLFA pattern and soil N dynamics can detect the long-term impact of repeated atrazine application to agricultural soils.},
  author       = {Mahia, Jorge and Jesus Gonzalez-Prieto, Serafin and Martin, Angela and Bååth, Erland and Diaz-Ravina, Montserrat},
  issn         = {0178-2762},
  keyword      = {Atrazine,N mineralization,Enzyme activities,Phospholipid fatty acid,pattern},
  language     = {eng},
  number       = {5},
  pages        = {577--589},
  publisher    = {Springer},
  series       = {Biology and Fertility of Soils},
  title        = {Biochemical properties and microbial community structure of five different soils after atrazine addition},
  url          = {http://dx.doi.org/10.1007/s00374-011-0569-x},
  volume       = {47},
  year         = {2011},
}