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Effect of Biochar and Compost Amendments on Soil Biochemical Properties and Dry Weight of Canola Plant Grown in Soil Contaminated with Heavy Metals
Communications in Soil Science and Plant Analysis ( IF 1.8 ) Pub Date : 2020-07-03 , DOI: 10.1080/00103624.2020.1763395
Esawy Mahmoud 1 , Mahmoud Ibrahim 1 , Nehal Ali 2 , Hanan Ali 1, 2
Affiliation  

ABSTRACT Soil contamination with heavy metals has resulted in a reduction of crop productivity and soil quality. We studied the effects of rice straw biochar (RB), rice straw compost (RC), and their mixtures at rates 0.5% and 1.0% on soil biochemistry and dry weight of the canola plant (Brassica napus) grown in contaminated soil with heavy metals. The results showed that the addition of the RB or RC alone or their mixtures together significantly increased contents of soil exchangeable cations, microbial biomass carbon (MBC), organic matter (OM), cations exchange capacity (CEC), availability of nutrients, NPK uptake, and dry weight of the canola plant. Soil microbial biomass carbon increased by 20.2% and 59.3% for RB, while it increased by 69.5% and 79.8% for RC with the addition of 0.5% and 1.0%, respectively, compared to the control. The results of this study reveal that the co-application of biochar with compost can be a promising strategy for improving soil productivity and soil quality in soil contaminated with heavy metals.

中文翻译:

生物炭和堆肥改良剂对重金属污染土壤中油菜植物土壤生化特性和干重的影响

摘要 土壤重金属污染导致作物生产力和土壤质量下降。我们研究了稻草生物炭 (RB)、稻草堆肥 (RC) 及其 0.5% 和 1.0% 的混合物对在受重金属污染的土壤中生长的油菜 (Brassica napus) 的土壤生化和干重的影响. 结果表明,单独添加 RB 或 RC 或其混合物显着增加土壤可交换阳离子含量、微生物生物量碳 (MBC)、有机质 (OM)、阳离子交换容量 (CEC)、养分有效性、NPK 吸收和油菜籽干重。与对照相比,RB 的土壤微生物生物量碳增加了 20.2% 和 59.3%,而加入 0.5% 和 1.0% 的 RC 分别增加了 69.5% 和 79.8%。
更新日期:2020-07-03
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