ICAR-Indian Institute of Soil Science, Berasia Road, 462 038, Nabibagh, Bhopal, India.
ICAR-Directorate of Rapeseed-Mustard Research, 321 303, Sewar, Bharatpur, India.
Bull Environ Contam Toxicol. 2023 Jan 21;110(2):44. doi: 10.1007/s00128-023-03690-z.
Long- term application of marginal quality water accumulated significant amount of pollutant into the soil. It reduces soil health parameters, and crop yield and their quality. In this regards, graded application of pressmud (PM), i.e. 0, 2.5, 5 and 10 g/kg was applied on lead (Pb) contamination level (0, 100, 150, 300 mg/kg) and evaluated interaction effect on plant nutrients uptake by spinach. Analytical data showed that increasing the PM levels enhanced the macro (phosphorus, potassium, sulphur) and micro-nutrient (zinc, copper, manganese, iron) concentration into the soil. Whereas, increasing the level of Pb significantly (p ≤ 0.05) reduced the P, K and S nutrient concentration and uptake pattern by spinach crop. Increasing PM levels (control to 10 g/kg soil) improved P, K and S by 46.99, 98.96 and 76.79%, respectively in soil. This study is useful to formulate management strategies for minimizing Pb contamination in the food chain by the application of PM mostly in peri-urban areas.
长期使用劣质水会使大量污染物积累在土壤中。这会降低土壤健康参数以及作物的产量和质量。在这方面，我们将不同量的沼渣（PM）（0、2.5、5 和 10 g/kg）分级应用于受铅（Pb）污染的土壤（0、100、150、300 mg/kg），并评估其对菠菜养分吸收的交互作用。分析数据表明，随着 PM 水平的提高，土壤中的大量（磷、钾、硫）和微量营养素（锌、铜、锰、铁）浓度也会增加。然而，随着 Pb 水平的增加，菠菜作物对 P、K 和 S 养分的浓度和吸收模式会显著降低（p ≤ 0.05）。PM 用量从对照（0 g/kg 土壤）增加到 10 g/kg 土壤，可分别提高土壤中 P、K 和 S 的含量 46.99%、98.96%和 76.79%。本研究对于制定管理策略，通过在城市周边地区广泛应用 PM，最大限度地减少食物链中的 Pb 污染具有重要意义。
