ICAR Research Complex for NEH Region, Sikkim Centre, Gangtok, 737102, Sikkim, India.
Division of Agricultural Chemicals, IARI, LBS Building, New Delhi, 110012, India.
Bull Environ Contam Toxicol. 2020 Aug;105(2):261-269. doi: 10.1007/s00128-020-02936-4. Epub 2020 Jul 14.
Persistence and sorption behaviour of flubendiamide in two different Indian soils as affected by maize stalk biochar was studied. The persistence was more in West Bengal soil (178.6 days) than Sikkim soil (165.3 days) at 10 µg g fortification level. Biochar amendment addition to soil at 5% enhanced the degradation process and half-life (T) values were 103.5 and 117.4 days, respectively for biochar amended Sikkim and West Bengal soil. Sorption study through batch equilibrium method resulted the 4 h equilibrium time with adsorption 6.22% ± 0.16% and 5.26% ± 0.16% in Sikkim and West Bengal soil, respectively. Biochar addition at 5% increased the adsorption of flubendiamide to 8.12% ± 0.16% and 5.88% ± 0.16% indicating a greater influence in this process. The adsorption was more in biochar amended Sikkim soil than West Bengal soil. The values of desorption was slower than adsorption indicating a hysteresis effect having hysteresis coefficient (H) ranges between 0.025 and 0.151 in two test soils.
研究了玉米秸秆生物炭对两种不同印度土壤中氟苯嘧啶持久性和吸附行为的影响。在 10μg g 添加水平下，西孟加拉邦土壤（178.6 天）的持久性高于锡金邦土壤（165.3 天）。生物炭在土壤中的添加量为 5%时，可增强降解过程，半衰期（T）值分别为 103.5 和 117.4 天，分别为添加生物炭的锡金邦和西孟加拉邦土壤。通过批量平衡法进行的吸附研究得出，在 4 小时的平衡时间内，在锡金邦和西孟加拉邦土壤中的吸附率分别为 6.22%±0.16%和 5.26%±0.16%。添加 5%的生物炭可将氟苯嘧啶的吸附增加至 8.12%±0.16%和 5.88%±0.16%，表明在此过程中生物炭的影响更大。在添加生物炭的锡金邦土壤中的吸附大于西孟加拉邦土壤。解吸值比吸附值慢，表明存在滞后效应，在两种测试土壤中滞后系数（H）范围在 0.025 至 0.151 之间。
