Invasive Species Compendium

Detailed coverage of invasive species threatening livelihoods and the environment worldwide

Abstract

Allelopathic effects of Parthenium hysterophorus L. on the growth and yield of Vigna radiata L.

Abstract

In Laboratory and Field bioassays, we investigated the effects of aqueous extracts from leaves, roots and flowers of parthenium (Parthenium hysterophorus L.) on the growth, yield and nodulation of mung bean (Vigna radiata L.). The extracts were tested in laboratory bio-assays at 1, 3, 6 and 9% concentrations on seed germination and seedling growth of mung bean. Thereafter, they were tested in the field at 3, 6 and 9% concentrations on germination, growth, yield, nitrogen and phosphorous contents and nodulation of mung bean. The extracts of parthenium were harmful to the physiological and agronomical parameters, and nitrogen and phosphorus content. The leaf extracts caused up to 95% reduction in different parameters (nodules biomass and nitrogen content) followed by the flower (75% reduction) and root extract (48% reduction). The GC-MS analyses identified 33, 35 and 25 compounds in the leaf, flower and root methanolic extracts, respectively. The identified compounds were mainly terpenes, fatty acids, hydrocarbons, phenolics and phytosterols.