Combined use of biochar and alternative management systems for imazamox induced pollution control in rice growing environments

• DOI: 10.1016/j.jenvman.2023.117430
• Publication Date: 2023-02-15T10:56:17Z
• Authors: Jaime Terrón-Sánchez; Carmen Martín-Franco; Luis Andrés Vicente; Damián Fernández-...; Ángel Albarrán; José Manuel Rato ...; David Peña; Antonio López-Piñ...
• Keywords: Amendment

Imazamox (IMZX) is a persistent herbicide having probable risks for non-target organisms in the environment and water contamination. Alternatives to conventional flooding rice production, including biochar amendment, may induce changes soil properties which can greatly modify environmental fate of IMZX. This two-year study first evaluate how tillage irrigation practices, with or without fresh aged (Bc), that are alternatives production impact IMZX's fate. The treatments were: (CTFI), sprinkler (CTSI), no-tillage (NTSI), corresponding Bc-amendment (CTFI-Bc, CTSI-Bc, NTSI-Bc). Fresh Bc amendment decreased sorption onto treatments, Kf values decreasing 3.7 4.2-fold (fresh case) 1.5 2.6-fold (aged CTSI-Bc CTFI-Bc, respectively. transition reduced IMZX persistence. Overall, also chemical persistence half-life 1.6 1.5-fold CTFI CTSI year) 1.1, 1.3-fold CTFI, CTSI, NTSI year), Sprinkler leaching by up factor 2.2. use as led significant decrease only under conditions, but notable particular case where losses were year from 80% 34% and, year, 74% 50%. Hence change either alone combination aged) could be considered an effective way sharply mitigate contamination environments grown, particularly those managed tillage.