Comparative assessment of biochar and vermicompost on chromium bioavailability and stress alleviation in tomato (Solanum lycopersicum)

文献类型： 外文期刊

第一作者： Kabir, Jamaluddin

作者： Kabir, Jamaluddin;Farooq, Muhammad Ansar;Parvez, Shumaila;Din, Aamir Alaud;Farooq, Muhammad Ansar;Abbas, Ghulam;Xu, Minggang;Xu, Minggang;Abrar, Muhammad Mohsin;Abrar, Muhammad Mohsin

作者机构：

关键词： Biochar; Chromium; Iron enriched biochar; Tomato; Vermicompost

期刊名称：JOURNAL OF SOILS AND SEDIMENTS （ 影响因子：3.0； 五年影响因子：3.4 ）

ISSN： 1439-0108

年卷期： 2025 年

页码：

收录情况： SCI

摘要： PurposeChromium (Cr) toxicity is a significant threat to food and nutritional security. This study investigated the comparative effect of different organic amendments to immobilize Cr and mitigate its toxic effects on tomatoes.MethodsPlants were stressed with Cr (0, 25, 50, and 100 mg kg-1) in a pot experiment, alone or in combination with various organic amendments viz. biochar (5% BC), iron-enriched biochar (0.5% Fe-BC), farmyard manure (5% FYM), and vermicompost (5% VC).ResultsCr toxicity at 25 and 50 ppm significantly reduced plant growth, membrane stability and relative water contents while plants did not survive at 100 ppm Cr. Cr-induced oxidative damage increased by 1.9- and 2.7-fold under 25 and 50 ppm Cr, respectively. However, application of organic amendments effectively alleviated Cr stress in tomato, with VC showing the most pronounced effect on growth. Tomato plants supplemented with VC under Cr stress exhibited a substantial increase in shoot length (2.3-fold), fresh weight (2.0-fold) and membrane stability (1.7-fold), respectively as compared to the stressed plants grown without VC. Notably, the addition of organic amendments enabled the plants to withstand the toxicity of 100 ppm Cr. Organic amendments improved stress tolerance in tomato primarily due to reduced Cr uptake and increased antioxidant enzyme activities (SOD = 3.11-fold, CAT = 1.14-fold, POD = 2.95, and APX = 1.76-fold).ConclusionsThese findings underscore the potential of various organic amendments in mitigating Cr toxicity in plants, with VC demonstrating superior performance. Future research should focus on exploring optimal application and long-term effects of these amendments on soil health and crop productivity.

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