Centre for Pollution Control & Environmental Engineering, Pondicherry University, Chinnakalapet, Puducherry, 605 014, India.
Environ Sci Pollut Res Int. 2018 Feb;25(5):4989-5002. doi: 10.1007/s11356-017-0826-0. Epub 2017 Dec 5.
Utilization of Salvinia molesta, an aquatic weed which is notorious for its allelopathy and invasiveness, has been explored by its vermicomposting. Fourier transform infrared spectroscopy (FT-IR) and plant bioassay tests were conducted to analyze the composition and fertilizer value of S .molesta vermicompost. Germination and seedling growth tests were performed in soil supplemented with vermicompost at levels ranging from 0.75 to 40% by weight of the soil on three common food plants, ladies finger (Abelmoschus esculentus), cucumber (Cucumis sativus), and green gram (Vigna radiata). The influence of S. molesta's vermicompost on some of the physicochemical and biological attributes of the soil was also studied. FT-IR analysis revealed that S. molesta loses its allelopathy, as the chemical compounds that are responsible for it are largely destroyed, in the course of its vermicomposting. There is also an indication that a portion of lignin content of S. molesta is degraded. Vermicompost enhanced the germination success and promoted the morphological growth and biochemical content of the plant species studied. It also bestowed plant friendly physicochemical and biological attributes to the soil. The findings raise the prospect that billions of tons of S. molesta biomass-which not only goes to waste at present but is also a cause of serious harm to the environment-may become utilizable in organic agriculture.
水鳖，一种以其化感作用和入侵性而臭名昭著的水生杂草，已被用于其蚯蚓堆肥。傅里叶变换红外光谱（FT-IR）和植物生物测定试验被用来分析水鳖蚯蚓堆肥的组成和肥料价值。在三种常见的食用植物，即黄秋葵（Abelmoschus esculentus）、黄瓜（Cucumis sativus）和绿豆（Vigna radiata）上，在土壤中添加 0.75 至 40%（按土壤重量计）的蚯蚓堆肥，进行了发芽和幼苗生长试验。还研究了水鳖的蚯蚓堆肥对土壤一些物理化学和生物学特性的影响。FT-IR 分析表明，水鳖在其蚯蚓堆肥过程中失去了化感作用，因为负责化感作用的化合物在很大程度上被破坏了。也有迹象表明，水鳖的一部分木质素含量被降解。蚯蚓堆肥提高了种子的发芽成功率，促进了所研究植物物种的形态生长和生化含量。它还赋予了土壤友好的物理化学和生物学特性。这些发现表明，目前不仅浪费了数以亿计的水鳖生物质，而且对环境造成严重危害的生物质，可能在有机农业中变得可用。
