Anderson Marcel Gibbert, Tiago Guimarães, Elisa Maria Gomes da Silva, Laryssa Barbosa Xavier da Silva, Franz Zirena Vilca, Kassio Ferreira Mendes
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Oxisol was used in this study, unamended and amended with RAW and biochars (BC300 and BC500) in a rate of 10% (w w<sup>-1</sup>). The sorption-desorption process was assessed by batch-equilibrium experiments and the analysis was performed using high-performance liquid chromatography (HPLC). The addition of the three materials to the soil increased the contents of pH, organic carbon, P, K, Ca, Mg, Zn, Fe, Mn, Cu, B, cation exchange capacity, base saturation and decreased H + Al. The unamended soil had <i>K<sub>f</sub></i> (Freundlich sorption coefficient) values of diclosulam sorption and desorption of 1.56 and 12.93 mg<sup>(1 - 1/n)</sup> L<sup>1/n</sup> Kg<sup>-1</sup>, respectively. Unamended soil sorbed 30.60% and desorbed 13.40% of herbicide. Soil amended with RAW, BC300, and BC500 sorbed 31.92, 49.88, and 30.93% of diclosulam and desorbed 13.33, 11.67, and 11.16%, respectively. The addition of RAW and biochars from olive stone has the potential to change the soil fertility, but does not interfere with the bioavailability of diclosulam in weed control under field conditions, since the materials slightly influenced or did not alter the sorption-desorption of diclosulam.</p>","PeriodicalId":15720,"journal":{"name":"Journal of Environmental Science and Health Part B-pesticides Food Contaminants and Agricultural Wastes","volume":null,"pages":null},"PeriodicalIF":1.4000,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Raw feedstock vs. biochar from olive stone: Impact on the sorption-desorption of diclosulam and tropical soil improvement.\",\"authors\":\"Anderson Marcel Gibbert, Tiago Guimarães, Elisa Maria Gomes da Silva, Laryssa Barbosa Xavier da Silva, Franz Zirena Vilca, Kassio Ferreira Mendes\",\"doi\":\"10.1080/03601234.2024.2414360\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p><p>The addition of carbon-rich materials, such as raw feedstocks (RAW) and biochars, to agricultural soils is on the rise. This activity has many advantages, such as improving fertility, increasing water retention, and sequestering carbon. However, they can also increase the sorption of residual herbicides in the soil, reducing the effectiveness of weed control. Thus, the objective of this study was to evaluate soil improvement and the sorption-desorption process of diclosulam in soil unamended and amended with RAW from olive stone and their biochars produced in two pyrolysis temperatures (300 and 500 °C). Oxisol was used in this study, unamended and amended with RAW and biochars (BC300 and BC500) in a rate of 10% (w w<sup>-1</sup>). The sorption-desorption process was assessed by batch-equilibrium experiments and the analysis was performed using high-performance liquid chromatography (HPLC). The addition of the three materials to the soil increased the contents of pH, organic carbon, P, K, Ca, Mg, Zn, Fe, Mn, Cu, B, cation exchange capacity, base saturation and decreased H + Al. The unamended soil had <i>K<sub>f</sub></i> (Freundlich sorption coefficient) values of diclosulam sorption and desorption of 1.56 and 12.93 mg<sup>(1 - 1/n)</sup> L<sup>1/n</sup> Kg<sup>-1</sup>, respectively. Unamended soil sorbed 30.60% and desorbed 13.40% of herbicide. Soil amended with RAW, BC300, and BC500 sorbed 31.92, 49.88, and 30.93% of diclosulam and desorbed 13.33, 11.67, and 11.16%, respectively. 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引用次数: 0
摘要
在农业土壤中添加富碳材料(如原料(RAW)和生物炭)的做法正在增加。这种做法有许多优点,如提高肥力、增加保水性和固碳。但是,它们也会增加土壤中残留除草剂的吸附力,降低除草效果。因此,本研究的目的是评估土壤改良情况以及双氯磺草胺在未经改良的土壤中的吸附-解吸过程,以及在改良土壤中使用从橄榄石中提取的 RAW 及其在两种热解温度(300 和 500 ℃)下生产的生物炭的吸附-解吸过程。本研究使用的是 Oxisol,即未经改良和添加了 RAW 和生物屑(BC300 和 BC500)的土壤,添加量为 10%(w w-1)。吸附-解吸过程通过批量平衡实验进行评估,并使用高效液相色谱法(HPLC)进行分析。向土壤中添加这三种材料后,土壤中的 pH 值、有机碳、P、K、Ca、Mg、Zn、Fe、Mn、Cu、B、阳离子交换容量、碱饱和度都有所增加,而 H + Al 的含量则有所下降。未经改良的土壤对双唑草胺的吸附和解吸 Kf(弗伦德里希吸附系数)值分别为 1.56 和 12.93 mg(1 - 1/n) L1/n Kg-1。未经改良的土壤对除草剂的吸附率为 30.60%,解吸率为 13.40%。添加了 RAW、BC300 和 BC500 的土壤分别吸附了 31.92%、49.88% 和 30.93% 的双氯磺草胺,解吸了 13.33%、11.67% 和 11.16%。在田间条件下,添加 RAW 和橄榄石生物炭有可能改变土壤肥力,但不会干扰双氯磺草胺在除草过程中的生物利用率,因为这些材料会轻微影响或不会改变双氯磺草胺的吸附-解吸作用。
Raw feedstock vs. biochar from olive stone: Impact on the sorption-desorption of diclosulam and tropical soil improvement.
The addition of carbon-rich materials, such as raw feedstocks (RAW) and biochars, to agricultural soils is on the rise. This activity has many advantages, such as improving fertility, increasing water retention, and sequestering carbon. However, they can also increase the sorption of residual herbicides in the soil, reducing the effectiveness of weed control. Thus, the objective of this study was to evaluate soil improvement and the sorption-desorption process of diclosulam in soil unamended and amended with RAW from olive stone and their biochars produced in two pyrolysis temperatures (300 and 500 °C). Oxisol was used in this study, unamended and amended with RAW and biochars (BC300 and BC500) in a rate of 10% (w w-1). The sorption-desorption process was assessed by batch-equilibrium experiments and the analysis was performed using high-performance liquid chromatography (HPLC). The addition of the three materials to the soil increased the contents of pH, organic carbon, P, K, Ca, Mg, Zn, Fe, Mn, Cu, B, cation exchange capacity, base saturation and decreased H + Al. The unamended soil had Kf (Freundlich sorption coefficient) values of diclosulam sorption and desorption of 1.56 and 12.93 mg(1 - 1/n) L1/n Kg-1, respectively. Unamended soil sorbed 30.60% and desorbed 13.40% of herbicide. Soil amended with RAW, BC300, and BC500 sorbed 31.92, 49.88, and 30.93% of diclosulam and desorbed 13.33, 11.67, and 11.16%, respectively. The addition of RAW and biochars from olive stone has the potential to change the soil fertility, but does not interfere with the bioavailability of diclosulam in weed control under field conditions, since the materials slightly influenced or did not alter the sorption-desorption of diclosulam.