Ecology and Environmental Remediation Laboratory, Department of Botany, Gauhati University, Guwahati 781014, Assam, India.
Ecology and Environmental Remediation Laboratory, Department of Botany, Gauhati University, Guwahati 781014, Assam, India.
Bioresour Technol. 2022 Mar;347:126391. doi: 10.1016/j.biortech.2021.126391. Epub 2021 Nov 25.
Vermiconversion possibility of waste biomass of two medicinal herbs Zingiber officinale and Curcuma longa has been investigated. The Eisenia fetida, an epigeic earthworm was used in the vermicomposting process. The vermicomposting caused shifting in pH towards neutral range, reduction in electrical conductivity, total organic carbon, C/N and C/P ratios whereas1.8-2.73 folds enhancement in macronutrients (TKN, AP, T Ca and T Mg) and ash contents in the substrate mixture. The heavy metals and trace elements content in the vermicompost were found within 3.25-1380 mg/kg and are under the permissible limits of compost applications. Besides, high germination index value in the vermicompost extract indicates loss of phytotoxicity and safe agricultural application potential of the end product. Finally, enhanced growth in Eisenia fetida confirms the application potential of harvested waste biomass as the raw materials for vermiconversion process.
研究了两种药用植物姜和姜黄的废生物质进行蚯蚓转化的可能性。在蚯蚓堆肥过程中使用了表栖蚯蚓赤子爱胜蚓。蚯蚓堆肥导致 pH 值向中性范围转移，电导率、总有机碳、C/N 和 C/P 比降低，而基质混合物中的大量营养素（TKN、AP、T Ca 和 T Mg）和灰分含量增加 1.8-2.73 倍。蚯蚓堆肥中的重金属和微量元素含量在 3.25-1380 mg/kg 之间，在堆肥应用的允许范围内。此外，蚯蚓堆肥提取物中的高发芽指数值表明去除了植物毒性，并且最终产物具有安全的农业应用潜力。最后，赤子爱胜蚓的生长增强证实了收获的废生物质作为蚯蚓转化过程的原料的应用潜力。
