The role of two organic amendments to modify the environmental fate of S-metolachlor in agricultural soils

Marín-Benito, Jesús M.; Herrero‐Hernández, Eliseo; Ordax, José M.; Sánchez-Martín, María J.; Rodríguez‐Cruz, M. Sonia

doi:10.1016/j.envres.2021.110871

Cited by 31 publications

(8 citation statements)

References 51 publications

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“…Moreover, a negative correlation between DT 50 values of s-metolachlor with soil organic carbon content has been reported in the literature [ 79 , 80 ]. Corroborating these findings, a recent study by Marín-Benito, et al [ 81 ] reported slower dissipation and leaching of s-metolachlor in soils amended with green compost and pelletized manure compared to unamended soils. DT 50 values of metolachlor were prolonged from 37.9 to 126 days to 49.5 to 135.9 days for two different soil types under soil sterilization in China, indicating that microbial degradation was the dominant pathway for metolachlor and s-metolachlor degradation in soils [ 80 , 82 ].…”

Section: Environmental Fate Of Herbicides Utilized In Tomato Productionmentioning

confidence: 67%

Weed Management Strategies for Tomato Plasticulture Production in Florida

Tiwari

Bashyal

Kanissery

2022

Plants

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Florida is the top producer of fresh market tomatoes in the U.S., with an average production of 0.4 million metric tons. Tomatoes are commercially grown on plastic mulched raised beds in Southwest Florida, the primary production region in the state. Low tomato yield in plasticulture production is often associated with the poor control of nutsedge species. Nutsedge management, therefore, remains a critical production challenge for tomato growers in Florida. Sandy soil in this region promotes herbicide movement after heavy rainfall or irrigation, affecting weed suppression. This will also potentially impact the timely establishment of new tomato transplants and, consequently, the crop vigor if the herbicides get into the root zone. This review aims to present and discuss an overview of available options to safely manage major weeds of tomatoes, including nutsedge species, in plasticulture production. In addition, this review seeks to discuss an approach for utilizing herbicide adjuvants, such as spray deposition agents or oil binding agents, to improve herbicides’ efficacy and tomato crop safety by enhancing their retention in plastic mulched raised beds.

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Section: Environmental Fate Of Herbicides Utilized In Tomato Productionmentioning

confidence: 67%

Weed Management Strategies for Tomato Plasticulture Production in Florida

Tiwari

Bashyal

Kanissery

2022

Plants

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“…These previous studies targeted metabolites of S -metolachlor that could be produced in the plant seedling within a short time of 24 h after herbicide exposure, and thus magnitudes of MOC-OA and -ESA produced for 24 h might be below their detectable limits. MOC-OA and -ESA are the main metabolites of S -metolachlor that can be produced primarily by microbial activity in ground and surface water and soil. − In this study, MOC-ESA was not detected from rinsates of tested Petri dish and seed/seedling surfaces, but residues of MOC-OA (86–260 ng) were detected in the rinsates (Norsworthy, unpublished data). Although residual trends of MOC-OA in the rinsates did not show differences between treatments with S and R biotypes, there was a potential that some residues of MOC-OA produced outside seeds/seedlings could be absorbed into the plant samples during the study.…”

Section: Resultsmentioning

confidence: 99%

Exploratory Analysis on Herbicide Metabolism and Very-Long-Chain Fatty Acid Production in Metolachlor-Resistant Palmer Amaranth (Amaranthus palmeri S. Wats.)

Hwang

Norsworthy

Carvalho-Moore

et al. 2023

J. Agric. Food Chem.

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A Palmer amaranth (Amaranthus palmeri S. Wats.) biotype resistant to S-metolachlor was confirmed from crop fields in Arkansas, USA. This study investigated the metabolic effects of malathion (cytochrome P450 inhibitor) and 4-chloro-7nitrobenzofurazan [NBD-Cl; glutathione S-transferase inhibitor] on the S-metolachlor-resistant A. palmeri biotype. Root elongation of the resistant biotype was 20% more inhibited by treatment of NBD-Cl (50 nM) and S-metolachlor (2 μM) in mixture than by treatment of S-metolachlor alone. Metabolites of S-metolachlor were 1.4−12.1 times greater produced in the resistant biotype for 7 d than in the susceptible standard. Production of cerotic acid, one of the very-long-chain fatty acids containing 26 carbons, was more reduced in the susceptible standard (3.8-fold) than in the resistant biotype (1.8-fold) by S-metolachlor treatment. Conclusively, evolution of S-metolachlor resistance observed in this study was likely associated with improved activity of glutathione S-transferases. Further studies are needed to genetically evaluate plant endogenous enzymes involving cerotic acid production.

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“…The highest increase was observed for three-component heterostructure which reach 61.08% photocatalytic turnover rate, after 8 h of irradiation. These results are significant considering that S-MCh is considered to be a reluctant molecule towards photocatalytic decomposition due to the structural stability induced by the aromatic cycle and functional groups [ 39 , 40 ]. The formation of bi-products with pollutant potential cannot be excluded as partial oxidation may induce the development of carboxylic acids.…”

Section: Resultsmentioning

confidence: 99%

Tuned S-Scheme Cu2S_TiO2_WO3 Heterostructure Photocatalyst toward S-Metolachlor (S-MCh) Herbicide Removal

Eneşca

Isac

2021

Materials

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A dual S-scheme Cu2S_TiO2_WO3 heterostructure was constructed by sol–gel method using a two-step procedure. Due to the synthesis parameters and annealing treatment the heterostructure is characterized by sulfur deficit and oxygen excess allowing the passivation of oxygen vacancies. The photocatalytic activity was evaluated under UV and UV–Vis irradiation scenarios using S-MCh as reference pollutant. The heterostructure is composed on orthorhombic Cu2S, anatase TiO2 and monoclinic WO3 with crystallite sizes varying from 65.2 Å for Cu2S to 97.1 Å for WO3. The heterostructure exhibit a dense morphology with pellets and particle-like morphology closely combined in a relatively compact assembly. The surface elemental composition indicate that the heterostructure maintain a similar atomic ratio as established during the synthesis with a slight sulfur deficit due to the annealing treatments. The results indicate that the three-component heterostructure have higher photocatalytic efficiency (61%) comparing with two-component heterostructure or bare components. Moreover, Cu2S_TiO2_WO3 exhibit a superior constant rate (0.114 s−1) due to the high concentration of photogenerated charge carriers, efficient charge separation and migration.

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The role of two organic amendments to modify the environmental fate of S-metolachlor in agricultural soils

Cited by 31 publications

References 51 publications

Weed Management Strategies for Tomato Plasticulture Production in Florida

Weed Management Strategies for Tomato Plasticulture Production in Florida

Exploratory Analysis on Herbicide Metabolism and Very-Long-Chain Fatty Acid Production in Metolachlor-Resistant Palmer Amaranth (Amaranthus palmeri S. Wats.)

Tuned S-Scheme Cu2S_TiO2_WO3 Heterostructure Photocatalyst toward S-Metolachlor (S-MCh) Herbicide Removal

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