Sorption of Metribuzin and Metolachlor in Alaskan Subarctic Agricultural Soils
Adsorption and desorption of metribuzin and metolachlor were studied for 0- to 15- and 30- to 45-cm soil depths and at 5 and 28 C temperatures for two subarctic Alaskan agricultural soils. Surface soils had five to eight times the organic carbon content of deeper soils and had lower Freundlich isoth...
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Cambridge University Press (CUP)
1992
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Online Access: | http://dx.doi.org/10.1017/s004317450005712x https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S004317450005712X |
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crcambridgeupr:10.1017/s004317450005712x 2024-03-03T08:49:01+00:00 Sorption of Metribuzin and Metolachlor in Alaskan Subarctic Agricultural Soils Graham, Jeff S. Conn, Jeffery S. 1992 http://dx.doi.org/10.1017/s004317450005712x https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S004317450005712X en eng Cambridge University Press (CUP) https://www.cambridge.org/core/terms Weed Science volume 40, issue 1, page 155-160 ISSN 0043-1745 1550-2759 Plant Science Agronomy and Crop Science journal-article 1992 crcambridgeupr https://doi.org/10.1017/s004317450005712x 2024-02-08T08:45:42Z Adsorption and desorption of metribuzin and metolachlor were studied for 0- to 15- and 30- to 45-cm soil depths and at 5 and 28 C temperatures for two subarctic Alaskan agricultural soils. Surface soils had five to eight times the organic carbon content of deeper soils and had lower Freundlich isotherm slopes (1/n) for both herbicides. Surface soil Freundlich coefficients (K f ) were affected by both soil type and equilibration temperature, with soil type accounting for greater than 80% of the variation in K f . Surface soil mean K f values ranged from 1.5 to 2.4 for metribuzin and 4.4 to 9.2 for metolachlor. For soils from the 30- to 45-cm depth, neither soil type nor temperature affected K f . Isotherm slopes for desorption were less than adsorption, indicating hysteresis. Regressions between desorption K f and maximum herbicide adsorbed prior to desorption were highly significant with coefficients of determination (r 2 ) between 0.50 and 0.99. Article in Journal/Newspaper Subarctic Cambridge University Press Weed Science 40 1 155 160 |
institution |
Open Polar |
collection |
Cambridge University Press |
op_collection_id |
crcambridgeupr |
language |
English |
topic |
Plant Science Agronomy and Crop Science |
spellingShingle |
Plant Science Agronomy and Crop Science Graham, Jeff S. Conn, Jeffery S. Sorption of Metribuzin and Metolachlor in Alaskan Subarctic Agricultural Soils |
topic_facet |
Plant Science Agronomy and Crop Science |
description |
Adsorption and desorption of metribuzin and metolachlor were studied for 0- to 15- and 30- to 45-cm soil depths and at 5 and 28 C temperatures for two subarctic Alaskan agricultural soils. Surface soils had five to eight times the organic carbon content of deeper soils and had lower Freundlich isotherm slopes (1/n) for both herbicides. Surface soil Freundlich coefficients (K f ) were affected by both soil type and equilibration temperature, with soil type accounting for greater than 80% of the variation in K f . Surface soil mean K f values ranged from 1.5 to 2.4 for metribuzin and 4.4 to 9.2 for metolachlor. For soils from the 30- to 45-cm depth, neither soil type nor temperature affected K f . Isotherm slopes for desorption were less than adsorption, indicating hysteresis. Regressions between desorption K f and maximum herbicide adsorbed prior to desorption were highly significant with coefficients of determination (r 2 ) between 0.50 and 0.99. |
format |
Article in Journal/Newspaper |
author |
Graham, Jeff S. Conn, Jeffery S. |
author_facet |
Graham, Jeff S. Conn, Jeffery S. |
author_sort |
Graham, Jeff S. |
title |
Sorption of Metribuzin and Metolachlor in Alaskan Subarctic Agricultural Soils |
title_short |
Sorption of Metribuzin and Metolachlor in Alaskan Subarctic Agricultural Soils |
title_full |
Sorption of Metribuzin and Metolachlor in Alaskan Subarctic Agricultural Soils |
title_fullStr |
Sorption of Metribuzin and Metolachlor in Alaskan Subarctic Agricultural Soils |
title_full_unstemmed |
Sorption of Metribuzin and Metolachlor in Alaskan Subarctic Agricultural Soils |
title_sort |
sorption of metribuzin and metolachlor in alaskan subarctic agricultural soils |
publisher |
Cambridge University Press (CUP) |
publishDate |
1992 |
url |
http://dx.doi.org/10.1017/s004317450005712x https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S004317450005712X |
genre |
Subarctic |
genre_facet |
Subarctic |
op_source |
Weed Science volume 40, issue 1, page 155-160 ISSN 0043-1745 1550-2759 |
op_rights |
https://www.cambridge.org/core/terms |
op_doi |
https://doi.org/10.1017/s004317450005712x |
container_title |
Weed Science |
container_volume |
40 |
container_issue |
1 |
container_start_page |
155 |
op_container_end_page |
160 |
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1792506087274971136 |