Sorption, persistence and leaching of clomazone in rice environments under varying severity of alternate wetting and drying irrigation management with and without biochar amendment DOI Creative Commons
Luis Andrés Vicente, David Peña, Damián Fernández-Rodríguez

и другие.

Journal of Environmental Management, Год журнала: 2025, Номер 386, С. 125761 - 125761

Опубликована: Май 12, 2025

Clomazone (CLMZ) is one of the most effective and widely used herbicides in rice cultivation, but it has probable risks for environmental contamination. Alternate wetting drying irrigation (AWDI), with or without holm oak biochar (B) amendment, sustainable alternatives to conventional flooding cropping. However, its implementation may induce changes soil characteristics that can strongly affect behaviour CLMZ, although extent will depend on degree severity AWDI. This three-year study first assess how two different severities AWDI, fresh field-aged B, impact CLMZ's sorption, persistence leaching. The treatments were: continuous (CCF), moderate AWDI (MAWDI) intensive (IAWDI) which fields were reflooded when matric potentials at 0-15 cm depth -20 kPa -70 kPa, respectively, corresponding homologs B addition (CCF-B, MAWDI-B, IAWDI-B, respectively). transition increased sorption only level. Fresh aged B-amendment particularly soils from MAWDI regime, Kd values increasing by 1.4-fold (fresh case, measurements year after addition) 1.3 1.2- fold (aged cases, 2 3 years addition, leads more CLMZ persistence, especially IAWDI-B case where t1/2 incremented factors 1.6 1.2 year) 1.4 (second under conditions, respectively. IAWDI regimes reduced leaching up a factor average 2.3 2.8, leaching, regime their losses 4.3 times less second year, Therefore, change alone using as amendment could be considered useful strategy greatly mitigate pollution water rice-growing environments, those management aging.

Язык: Английский

Sorption, persistence and leaching of clomazone in rice environments under varying severity of alternate wetting and drying irrigation management with and without biochar amendment DOI Creative Commons
Luis Andrés Vicente, David Peña, Damián Fernández-Rodríguez

и другие.

Journal of Environmental Management, Год журнала: 2025, Номер 386, С. 125761 - 125761

Опубликована: Май 12, 2025

Clomazone (CLMZ) is one of the most effective and widely used herbicides in rice cultivation, but it has probable risks for environmental contamination. Alternate wetting drying irrigation (AWDI), with or without holm oak biochar (B) amendment, sustainable alternatives to conventional flooding cropping. However, its implementation may induce changes soil characteristics that can strongly affect behaviour CLMZ, although extent will depend on degree severity AWDI. This three-year study first assess how two different severities AWDI, fresh field-aged B, impact CLMZ's sorption, persistence leaching. The treatments were: continuous (CCF), moderate AWDI (MAWDI) intensive (IAWDI) which fields were reflooded when matric potentials at 0-15 cm depth -20 kPa -70 kPa, respectively, corresponding homologs B addition (CCF-B, MAWDI-B, IAWDI-B, respectively). transition increased sorption only level. Fresh aged B-amendment particularly soils from MAWDI regime, Kd values increasing by 1.4-fold (fresh case, measurements year after addition) 1.3 1.2- fold (aged cases, 2 3 years addition, leads more CLMZ persistence, especially IAWDI-B case where t1/2 incremented factors 1.6 1.2 year) 1.4 (second under conditions, respectively. IAWDI regimes reduced leaching up a factor average 2.3 2.8, leaching, regime their losses 4.3 times less second year, Therefore, change alone using as amendment could be considered useful strategy greatly mitigate pollution water rice-growing environments, those management aging.

Язык: Английский

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