Dissipation of Two Acidic Herbicides in Agricultural Soil: Impact of Green Compost Application, Herbicide Rate, and Soil Moisture
(This article belongs to the Section Agricultural Soils).
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| Tipo de documento: | artigo |
| Estado: | Versão publicada |
| Data de publicação: | 2025 |
| País: | España |
| Recursos: | Consejo Superior de Investigaciones Científicas (CSIC) |
| Repositório: | DIGITAL.CSIC. Repositorio Institucional del CSIC |
| OAI Identifier: | oai:digital.csic.es:10261/385705 |
| Acesso em linha: | http://hdl.handle.net/10261/385705 |
| Access Level: | Acceso aberto |
| Palavra-chave: | Aminopyralid Iodosulfuron-methyl-sodium Degradation Persistence Sandy loam soil Organic amendment Dose Irrigation Metabolite Dissipation mechanism |
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oai:digital.csic.es:10261/385705 |
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España |
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Dissipation of Two Acidic Herbicides in Agricultural Soil: Impact of Green Compost Application, Herbicide Rate, and Soil Moisture Marín-Benito, Jesús M. Andrades, M. Soledad Sánchez-Martín, María J. Rodríguez Cruz, M. Sonia Aminopyralid Iodosulfuron-methyl-sodium Degradation Persistence Sandy loam soil Organic amendment Dose Irrigation Metabolite Dissipation mechanism (This article belongs to the Section Agricultural Soils). The residues of the herbicides aminopyralid and iodosulfuron-methyl-sodium are phytotoxic to rotational crops. Their behaviour therefore needs to be studied under different agronomic practises and climatic conditions. The objective of this work was to use controlled laboratory conditions to study the effect of the following: (i) the application of green compost (GC) to agricultural soil, (ii) herbicide dose, (iii) soil moisture, and (iv) soil microbial activity on the degradation rate of aminopyralid and iodosulfuron-methyl-sodium. Moreover, the formation of two iodosulfuron-methyl-sodium metabolites (metsulfuron-methyl and 2-amino-4-methyl-4-methoxy methyl-triazine) and the dissipation mechanism of labelled <sup>14</sup>C-iodosulfuron-methyl-sodium under the same conditions were also studied. Aminopyralid and iodosulfuron-methyl showed slower degradation and half-life values (DT<sub>50</sub>) that were up to 4.6 and 1.4 times higher, respectively, in soil amended with GC, as the higher organic carbon (OC) content of this soil increased herbicide adsorption. The DT<sub>50</sub> values were up to 2.6 and 1.9 times higher for aminopyralid and iodosulfuron-methyl sodium, respectively, in soils treated with the double herbicide dose compared to soils treated with the agronomic dose. The DT<sub>50</sub> values for aminopyralid were up to 2.3 times higher in soils with moisture equal to 25% (H25%) of their water-holding capacity (WHC) than in soils with H50%. However, the DT<sub>50</sub> values for iodosulfuron-methyl-sodium were slightly lower in soils with H25% than in soils with H50%, due to the formation of bound residues. A biodegradation process significantly contributes to the dissipation of both herbicides. Higher amounts of metabolite metsulfuron-methyl were formed in the GC-amended soil in all cases. The percentages of <sup>14</sup>C extractable in soils treated with both doses of herbicide under H25% were slightly higher than in soils under higher soil moisture (H50%) over time, due to the slower degradation of <sup>14</sup>C-(iodosulfuron-methyl+metabolites). The higher persistence of the herbicides and their metabolites when the doses were applied at a high rate in soil amended with GC and under low moisture content may have negative consequences for the rotational crop. In the case of adverse conditions leading to the persistence of herbicides in the soil during the primary crop, the intervals for crop rotation should be increased. This research was funded by the Ministry of Science and Innovation (MICINN/AEI), grant number PID2020-113379RB-I00/AEI/10.13039/501100011033. We thank Project CLU-2019-05—IRNASA/CSIC Unit of Excellence, funded by the regional government, the Junta of Castilla y León and co-financed by the European Union (ERDF “Europe drives our growth”). The authors thank J.M. Ordax for his technical assistance. Peer reviewed Multidisciplinary Digital Publishing Institute http://hdl.handle.net/10261/385705 |
| title |
Dissipation of Two Acidic Herbicides in Agricultural Soil: Impact of Green Compost Application, Herbicide Rate, and Soil Moisture |
| spellingShingle |
Dissipation of Two Acidic Herbicides in Agricultural Soil: Impact of Green Compost Application, Herbicide Rate, and Soil Moisture Marín-Benito, Jesús M. Aminopyralid Iodosulfuron-methyl-sodium Degradation Persistence Sandy loam soil Organic amendment Dose Irrigation Metabolite Dissipation mechanism |
| title_short |
Dissipation of Two Acidic Herbicides in Agricultural Soil: Impact of Green Compost Application, Herbicide Rate, and Soil Moisture |
| title_full |
Dissipation of Two Acidic Herbicides in Agricultural Soil: Impact of Green Compost Application, Herbicide Rate, and Soil Moisture |
| title_fullStr |
Dissipation of Two Acidic Herbicides in Agricultural Soil: Impact of Green Compost Application, Herbicide Rate, and Soil Moisture |
| title_full_unstemmed |
Dissipation of Two Acidic Herbicides in Agricultural Soil: Impact of Green Compost Application, Herbicide Rate, and Soil Moisture |
| title_sort |
Dissipation of Two Acidic Herbicides in Agricultural Soil: Impact of Green Compost Application, Herbicide Rate, and Soil Moisture |
| author |
Marín-Benito, Jesús M. |
| author_facet |
Marín-Benito, Jesús M. Andrades, M. Soledad Sánchez-Martín, María J. Rodríguez Cruz, M. Sonia |
| author_role |
author |
| author2 |
Andrades, M. Soledad Sánchez-Martín, María J. Rodríguez Cruz, M. Sonia |
| author2_role |
author author author |
| topic |
Aminopyralid Iodosulfuron-methyl-sodium Degradation Persistence Sandy loam soil Organic amendment Dose Irrigation Metabolite Dissipation mechanism |
| topic_facet |
Aminopyralid Iodosulfuron-methyl-sodium Degradation Persistence Sandy loam soil Organic amendment Dose Irrigation Metabolite Dissipation mechanism |
| description |
(This article belongs to the Section Agricultural Soils). |
| publishDate |
2025 |
| format |
article |
| status_str |
publishedVersion |
| url |
http://hdl.handle.net/10261/385705 |
| eu_rights_str_mv |
openAccess |
| publisher |
Multidisciplinary Digital Publishing Institute |
| institution |
Consejo Superior de Investigaciones Científicas (CSIC) |
| collection |
DIGITAL.CSIC. Repositorio Institucional del CSIC |
| reponame_str |
DIGITAL.CSIC. Repositorio Institucional del CSIC |
| instname_str |
Consejo Superior de Investigaciones Científicas (CSIC) |
| _version_ |
1878442012922871808 |
| publishDateSort |
2025 |
| author_browse |
Andrades, M. Soledad Marín-Benito, Jesús M. Rodríguez Cruz, M. Sonia Sánchez-Martín, María J. |
| publisherStr |
Multidisciplinary Digital Publishing Institute |
| score |
6,924472 |