Agronomic and environmental implications of enhanced s-triazine degradation
Novel catabolic pathways enabling rapid detoxification of s-triazine herbicides have been elucidated and detected at a growing number of locations. The genes responsible for s-triazine mineralization, i.e. atzABCDEF and trzNDF, occur in at least four bacterial phyla and are implicated in the develop...
Main Authors: | , , , , , , , |
---|---|
Format: | Text |
Language: | unknown |
Published: |
DigitalCommons@University of Nebraska - Lincoln
2010
|
Subjects: | |
Online Access: | https://digitalcommons.unl.edu/usdaarsfacpub/2083 https://digitalcommons.unl.edu/context/usdaarsfacpub/article/3090/viewcontent/Krutz_PMS_2010_Agronomic_and_environmental_implications.pdf |
id |
ftunivnebraskali:oai:digitalcommons.unl.edu:usdaarsfacpub-3090 |
---|---|
record_format |
openpolar |
spelling |
ftunivnebraskali:oai:digitalcommons.unl.edu:usdaarsfacpub-3090 2023-11-12T04:07:26+01:00 Agronomic and environmental implications of enhanced s-triazine degradation Krutz, L. Jason Shaner, Dale L. Weaver, Mark A. Webb, Richard M.T. Zablotowicz, Robert M. Reddy, Krishna N. Huang, Yanbo Thomson, Steven J. 2010-01-01T08:00:00Z application/pdf https://digitalcommons.unl.edu/usdaarsfacpub/2083 https://digitalcommons.unl.edu/context/usdaarsfacpub/article/3090/viewcontent/Krutz_PMS_2010_Agronomic_and_environmental_implications.pdf unknown DigitalCommons@University of Nebraska - Lincoln https://digitalcommons.unl.edu/usdaarsfacpub/2083 https://digitalcommons.unl.edu/context/usdaarsfacpub/article/3090/viewcontent/Krutz_PMS_2010_Agronomic_and_environmental_implications.pdf Publications from USDA-ARS / UNL Faculty enhanced biodegradation modeling leaching weed control pesticide text 2010 ftunivnebraskali 2023-10-30T09:55:36Z Novel catabolic pathways enabling rapid detoxification of s-triazine herbicides have been elucidated and detected at a growing number of locations. The genes responsible for s-triazine mineralization, i.e. atzABCDEF and trzNDF, occur in at least four bacterial phyla and are implicated in the development of enhanced degradation in agricultural soils from all continents except Antarctica. Enhanced degradation occurs in at least nine crops and six crop rotation systems that rely on s-triazine herbicides for weed control, and, with the exception of acidic soil conditions and s-triazine application frequency, adaptation of the microbial population is independent of soil physiochemical properties and cultural management practices. From an agronomic perspective, residual weed control could be reduced tenfold in s-triazine-adapted relative to non-adapted soils. From an environmental standpoint, the off-site loss of total s-triazine residues could be overestimated 13-fold in adapted soils if altered persistence estimates and metabolic pathways are not reflected in fate and transport models. Empirical models requiring soil pH and s-triazine use history as input parameters predict atrazine persistence more accurately than historical estimates, thereby allowing practitioners to adjust weed control strategies and model input values when warranted. Text Antarc* Antarctica University of Nebraska-Lincoln: DigitalCommons@UNL |
institution |
Open Polar |
collection |
University of Nebraska-Lincoln: DigitalCommons@UNL |
op_collection_id |
ftunivnebraskali |
language |
unknown |
topic |
enhanced biodegradation modeling leaching weed control pesticide |
spellingShingle |
enhanced biodegradation modeling leaching weed control pesticide Krutz, L. Jason Shaner, Dale L. Weaver, Mark A. Webb, Richard M.T. Zablotowicz, Robert M. Reddy, Krishna N. Huang, Yanbo Thomson, Steven J. Agronomic and environmental implications of enhanced s-triazine degradation |
topic_facet |
enhanced biodegradation modeling leaching weed control pesticide |
description |
Novel catabolic pathways enabling rapid detoxification of s-triazine herbicides have been elucidated and detected at a growing number of locations. The genes responsible for s-triazine mineralization, i.e. atzABCDEF and trzNDF, occur in at least four bacterial phyla and are implicated in the development of enhanced degradation in agricultural soils from all continents except Antarctica. Enhanced degradation occurs in at least nine crops and six crop rotation systems that rely on s-triazine herbicides for weed control, and, with the exception of acidic soil conditions and s-triazine application frequency, adaptation of the microbial population is independent of soil physiochemical properties and cultural management practices. From an agronomic perspective, residual weed control could be reduced tenfold in s-triazine-adapted relative to non-adapted soils. From an environmental standpoint, the off-site loss of total s-triazine residues could be overestimated 13-fold in adapted soils if altered persistence estimates and metabolic pathways are not reflected in fate and transport models. Empirical models requiring soil pH and s-triazine use history as input parameters predict atrazine persistence more accurately than historical estimates, thereby allowing practitioners to adjust weed control strategies and model input values when warranted. |
format |
Text |
author |
Krutz, L. Jason Shaner, Dale L. Weaver, Mark A. Webb, Richard M.T. Zablotowicz, Robert M. Reddy, Krishna N. Huang, Yanbo Thomson, Steven J. |
author_facet |
Krutz, L. Jason Shaner, Dale L. Weaver, Mark A. Webb, Richard M.T. Zablotowicz, Robert M. Reddy, Krishna N. Huang, Yanbo Thomson, Steven J. |
author_sort |
Krutz, L. Jason |
title |
Agronomic and environmental implications of enhanced s-triazine degradation |
title_short |
Agronomic and environmental implications of enhanced s-triazine degradation |
title_full |
Agronomic and environmental implications of enhanced s-triazine degradation |
title_fullStr |
Agronomic and environmental implications of enhanced s-triazine degradation |
title_full_unstemmed |
Agronomic and environmental implications of enhanced s-triazine degradation |
title_sort |
agronomic and environmental implications of enhanced s-triazine degradation |
publisher |
DigitalCommons@University of Nebraska - Lincoln |
publishDate |
2010 |
url |
https://digitalcommons.unl.edu/usdaarsfacpub/2083 https://digitalcommons.unl.edu/context/usdaarsfacpub/article/3090/viewcontent/Krutz_PMS_2010_Agronomic_and_environmental_implications.pdf |
genre |
Antarc* Antarctica |
genre_facet |
Antarc* Antarctica |
op_source |
Publications from USDA-ARS / UNL Faculty |
op_relation |
https://digitalcommons.unl.edu/usdaarsfacpub/2083 https://digitalcommons.unl.edu/context/usdaarsfacpub/article/3090/viewcontent/Krutz_PMS_2010_Agronomic_and_environmental_implications.pdf |
_version_ |
1782328108589776896 |