Transient effects of glyphosate on microbial parameters in soil microcosms

Microbial parameters were determined during 28 days in soil microcosms spiked with glyphosate at the recommended dose (RD) and 10-fold RD (10X), as well in non-contaminated controls (CM). Soil respiration rates were stimulated by glyphosate after 1-3 days. Cumulative soil respiration in 10X was 52%...

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Autores principales:	Viviane Sobucki, Lisiane Sobucki, Caroline Badzinski, Daniel Daroit
Formato:	article
Lenguaje:	PT
Publicado:	Universidade Federal Rural da Amazônia (UFRA) 2021
Materias:	pesticide microbial activity microbial biomass enzyme activity Agriculture S Agriculture (General) S1-972 Environmental sciences GE1-350
Acceso en línea:	https://doaj.org/article/cc42322c7faf4c44a03cfd42cc91f1a7
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spelling	oai:doaj.org-article:cc42322c7faf4c44a03cfd42cc91f1a72021-11-16T18:12:48ZTransient effects of glyphosate on microbial parameters in soil microcosms2177-8760https://doaj.org/article/cc42322c7faf4c44a03cfd42cc91f1a72021-11-01T00:00:00Zhttps://ajaes.ufra.edu.br/index.php/ajaes/article/view/3489/1634https://doaj.org/toc/2177-8760Microbial parameters were determined during 28 days in soil microcosms spiked with glyphosate at the recommended dose (RD) and 10-fold RD (10X), as well in non-contaminated controls (CM). Soil respiration rates were stimulated by glyphosate after 1-3 days. Cumulative soil respiration in 10X was 52% and 32% higher than CM and RD, respectively. Total hydrolytic activity was similar between treatments during 0-14 days; lower activities were measured in CM/RD after 21 days and in RD after 28 days. Lower soil dehydrogenase activity was detected in contaminated soils after 7 and 21 days, but activities were comparable to CM at day 28. Total heterotrophic bacteria were higher in CM after 14 days; after 28 days, higher counts were observed in CM/10X microcosms. Microbial biomass carbon (MBC) at day 1 was negatively affected by 10X; however, it returned to CM/RD values at day 28. The metabolic quotient (qCO2) indicated a higher microbial stress in 10X at day 1; after 28 days, values were similar between treatments. In summary, the microbial indicators were changed in a transitory way by glyphosate. Therefore, no short-term detrimental effects are expected in terms of microbial numbers and activities. Studies to assess the diversity and structure of the soil bacterial community in response to glyphosate application are indicated.Viviane SobuckiLisiane SobuckiCaroline BadzinskiDaniel DaroitUniversidade Federal Rural da Amazônia (UFRA)articlepesticidemicrobial activitymicrobial biomassenzyme activityAgricultureSAgriculture (General)S1-972Environmental sciencesGE1-350PTRevista de Ciências Agrárias, Vol 64 (2021)
institution	DOAJ
collection	DOAJ
language	PT
topic	pesticide microbial activity microbial biomass enzyme activity Agriculture S Agriculture (General) S1-972 Environmental sciences GE1-350
spellingShingle	pesticide microbial activity microbial biomass enzyme activity Agriculture S Agriculture (General) S1-972 Environmental sciences GE1-350 Viviane Sobucki Lisiane Sobucki Caroline Badzinski Daniel Daroit Transient effects of glyphosate on microbial parameters in soil microcosms
description	Microbial parameters were determined during 28 days in soil microcosms spiked with glyphosate at the recommended dose (RD) and 10-fold RD (10X), as well in non-contaminated controls (CM). Soil respiration rates were stimulated by glyphosate after 1-3 days. Cumulative soil respiration in 10X was 52% and 32% higher than CM and RD, respectively. Total hydrolytic activity was similar between treatments during 0-14 days; lower activities were measured in CM/RD after 21 days and in RD after 28 days. Lower soil dehydrogenase activity was detected in contaminated soils after 7 and 21 days, but activities were comparable to CM at day 28. Total heterotrophic bacteria were higher in CM after 14 days; after 28 days, higher counts were observed in CM/10X microcosms. Microbial biomass carbon (MBC) at day 1 was negatively affected by 10X; however, it returned to CM/RD values at day 28. The metabolic quotient (qCO2) indicated a higher microbial stress in 10X at day 1; after 28 days, values were similar between treatments. In summary, the microbial indicators were changed in a transitory way by glyphosate. Therefore, no short-term detrimental effects are expected in terms of microbial numbers and activities. Studies to assess the diversity and structure of the soil bacterial community in response to glyphosate application are indicated.
format	article
author	Viviane Sobucki Lisiane Sobucki Caroline Badzinski Daniel Daroit
author_facet	Viviane Sobucki Lisiane Sobucki Caroline Badzinski Daniel Daroit
author_sort	Viviane Sobucki
title	Transient effects of glyphosate on microbial parameters in soil microcosms
title_short	Transient effects of glyphosate on microbial parameters in soil microcosms
title_full	Transient effects of glyphosate on microbial parameters in soil microcosms
title_fullStr	Transient effects of glyphosate on microbial parameters in soil microcosms
title_full_unstemmed	Transient effects of glyphosate on microbial parameters in soil microcosms
title_sort	transient effects of glyphosate on microbial parameters in soil microcosms
publisher	Universidade Federal Rural da Amazônia (UFRA)
publishDate	2021
url	https://doaj.org/article/cc42322c7faf4c44a03cfd42cc91f1a7
work_keys_str_mv	AT vivianesobucki transienteffectsofglyphosateonmicrobialparametersinsoilmicrocosms AT lisianesobucki transienteffectsofglyphosateonmicrobialparametersinsoilmicrocosms AT carolinebadzinski transienteffectsofglyphosateonmicrobialparametersinsoilmicrocosms AT danieldaroit transienteffectsofglyphosateonmicrobialparametersinsoilmicrocosms
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Transient effects of glyphosate on microbial parameters in soil microcosms

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