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Comparison of Cu salts and commercial Cu based fungicides on toxicity towards microorganisms in soil

Vázquez-Blanco, Raquel ; Arias-Estévez, Manuel ; Bååth, Erland LU and Fernández-Calviño, David LU (2020) In Environmental Pollution 257.
Abstract

Microbial responses to Cu pollution as a function of Cu sources (Cu salts and commercial Cu fungicides) were assessed in a soil using basal soil respiration, and bacterial and fungal community growth, as endpoints. The soil was amended with different concentrations (0–32 mmol Cu kg−1) of Cu nitrate, Cu sulfate, Bordeaux mixture and 3 types of Cu oxychloride. Cu salts decreased soil pH, while this was not found with the other Cu sources. This difference in soil pH effects caused differences in the respiration, bacterial growth and fungal growth response. Basal soil respiration was negatively affected by Cu addition when the soil was spiked with Cu salts, but almost unaffected by commercial Cu fungicides. Bacterial growth was... (More)

Microbial responses to Cu pollution as a function of Cu sources (Cu salts and commercial Cu fungicides) were assessed in a soil using basal soil respiration, and bacterial and fungal community growth, as endpoints. The soil was amended with different concentrations (0–32 mmol Cu kg−1) of Cu nitrate, Cu sulfate, Bordeaux mixture and 3 types of Cu oxychloride. Cu salts decreased soil pH, while this was not found with the other Cu sources. This difference in soil pH effects caused differences in the respiration, bacterial growth and fungal growth response. Basal soil respiration was negatively affected by Cu addition when the soil was spiked with Cu salts, but almost unaffected by commercial Cu fungicides. Bacterial growth was significantly and negatively affected by Cu addition for all the Cu sources, but Cu toxicity was higher for Cu salts than for commercial Cu fungicides. Fungal growth response was also different for Cu salts and commercial Cu fungicides, but only in the long-term. High Cu amendments using Cu salts stimulated fungal growth, whereas for commercial Cu fungicides, these concentrations inhibited fungal growth. Thus, the use of products similar to those used in commercial fungicides is a recommended practice for Cu risk assessments in soil.

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publishing date
type
Contribution to journal
publication status
published
subject
keywords
Bacterial growth, Copper, Fungal growth, pH, Soil respiration
in
Environmental Pollution
volume
257
article number
113585
publisher
Elsevier
external identifiers
  • scopus:85075340406
  • pmid:31753627
ISSN
0269-7491
DOI
10.1016/j.envpol.2019.113585
language
English
LU publication?
yes
id
5d98a045-15ec-4f32-9900-db0b31c3e69b
date added to LUP
2019-12-09 12:50:47
date last changed
2021-05-05 02:38:55
@article{5d98a045-15ec-4f32-9900-db0b31c3e69b,
  abstract     = {<p>Microbial responses to Cu pollution as a function of Cu sources (Cu salts and commercial Cu fungicides) were assessed in a soil using basal soil respiration, and bacterial and fungal community growth, as endpoints. The soil was amended with different concentrations (0–32 mmol Cu kg<sup>−1</sup>) of Cu nitrate, Cu sulfate, Bordeaux mixture and 3 types of Cu oxychloride. Cu salts decreased soil pH, while this was not found with the other Cu sources. This difference in soil pH effects caused differences in the respiration, bacterial growth and fungal growth response. Basal soil respiration was negatively affected by Cu addition when the soil was spiked with Cu salts, but almost unaffected by commercial Cu fungicides. Bacterial growth was significantly and negatively affected by Cu addition for all the Cu sources, but Cu toxicity was higher for Cu salts than for commercial Cu fungicides. Fungal growth response was also different for Cu salts and commercial Cu fungicides, but only in the long-term. High Cu amendments using Cu salts stimulated fungal growth, whereas for commercial Cu fungicides, these concentrations inhibited fungal growth. Thus, the use of products similar to those used in commercial fungicides is a recommended practice for Cu risk assessments in soil.</p>},
  author       = {Vázquez-Blanco, Raquel and Arias-Estévez, Manuel and Bååth, Erland and Fernández-Calviño, David},
  issn         = {0269-7491},
  language     = {eng},
  publisher    = {Elsevier},
  series       = {Environmental Pollution},
  title        = {Comparison of Cu salts and commercial Cu based fungicides on toxicity towards microorganisms in soil},
  url          = {http://dx.doi.org/10.1016/j.envpol.2019.113585},
  doi          = {10.1016/j.envpol.2019.113585},
  volume       = {257},
  year         = {2020},
}