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<p>Biochar (BC) is a carbon-rich porous material, which can increase soil organic matter content. The impacts of BC on soil properties have been widely investigated, however, the impacts of BC on bioaccumulation of pesticides in crops and the toxic effects to crops are less studied. Herein, batch experiments were carried out, the BC (0.02, 0.2, 2%) and atrazine (ATR)/acetochlor (ACE) were applied individually or in combination into soil to separately cultivate soybean/maize in greenhouse. On day 45, soybean and maize were sampled to measure ATR or ACE concentration: ATR concentration in soybean of 2%BC + ATR treatment group reached 24.55&#xa0;ng/g, which was significantly (<i>p</i> &lt; 0.05) lower than that of ATR-only treatment group (26.04&#xa0;ng/g); meanwhile, ACE concentration in maize of 2%BC + ACE treatment group reached 4.87&#xa0;ng/g, which was significantly (<i>p</i> &lt; 0.05) lower than that of ACE-only treatment group (5.27&#xa0;ng/g). Results showed that BC in soil slightly reduced ATR/ACE entering soybean/maize plants, which was due to that the existence of BC accelerated the degradation of ATR and ACE. In addition, the changes in MDA content, root electrolytic leakage, total chlorophyll, and soluble sugar of soybean in 2%BC + ATR treatment group were 0.93-fold, 0.81-fold, 1.11-fold, and 1.1-fold of ATR-only treatment group; the changes in MDA content, root electrolytic leakage, total chlorophyll, and soluble sugar of maize in 2%BC + ACE treatment group were 0.88-fold, 0.95-fold, 1.16-fold, and 1.1-fold of ACE-only treatment group, indicating that BC mitigated pesticide-induced stress. This study provides novel insight of utilizing BC to deal with organic pollutants in soil.</p>

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Influence of biochar on bioaccumulation and phytotoxicity of pesticides (atrazine and acetochlor) in crops in maize–soybean rotation system

  • 期刊论文

  • 发表日期：

    2026年5月7日

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  • Wanting Wang,
  • Jiaxing Yu,
  • Ming Li

摘要

Biochar (BC) is a carbon-rich porous material, which can increase soil organic matter content. The impacts of BC on soil properties have been widely investigated, however, the impacts of BC on bioaccumulation of pesticides in crops and the toxic effects to crops are less studied. Herein, batch experiments were carried out, the BC (0.02, 0.2, 2%) and atrazine (ATR)/acetochlor (ACE) were applied individually or in combination into soil to separately cultivate soybean/maize in greenhouse. On day 45, soybean and maize were sampled to measure ATR or ACE concentration: ATR concentration in soybean of 2%BC + ATR treatment group reached 24.55 ng/g, which was significantly (p < 0.05) lower than that of ATR-only treatment group (26.04 ng/g); meanwhile, ACE concentration in maize of 2%BC + ACE treatment group reached 4.87 ng/g, which was significantly (p < 0.05) lower than that of ACE-only treatment group (5.27 ng/g). Results showed that BC in soil slightly reduced ATR/ACE entering soybean/maize plants, which was due to that the existence of BC accelerated the degradation of ATR and ACE. In addition, the changes in MDA content, root electrolytic leakage, total chlorophyll, and soluble sugar of soybean in 2%BC + ATR treatment group were 0.93-fold, 0.81-fold, 1.11-fold, and 1.1-fold of ATR-only treatment group; the changes in MDA content, root electrolytic leakage, total chlorophyll, and soluble sugar of maize in 2%BC + ACE treatment group were 0.88-fold, 0.95-fold, 1.16-fold, and 1.1-fold of ACE-only treatment group, indicating that BC mitigated pesticide-induced stress. This study provides novel insight of utilizing BC to deal with organic pollutants in soil.