Assessment of allelopathic interference of Chenopodium album through its leachates, debris extracts, rhizosphere and amended soil

Authors: Batish, Daizy R.¹; Singh, Harminder P.²; Rana, Nipunika¹; Kohli, Ravinder K.²

Source: Archives of Agronomy and Soil Science, Volume 52, Number 6, December 2006 , pp. 705-715(11)

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Abstract:

A study conducted to assess the allelopathic interference of invasive weed Chenopodium album indicated that aqueous leachates of C. album plant parts (roots, whole plant, and leaves), debris extracts and rhizosphere soil deleteriously affected the germination and initial growth of two test plantsÂâ-“ÂCassia occidentalis (a weed) and Phaseolus aureus (a crop). Further, the plant growth in terms of height, biomass, chlorophyll and protein content was significantly lesser in soil amended with C. album debris. Aqueous leachates, debris extracts, rhizosphere soil and debris amended soil were found to contain significantly higher amounts of water-soluble phenolicsÂâ-“Âthe known phytotoxins. These phytotoxins in root, above-ground parts and leaves were phenolic acids, namely gallic, chlorogenic, caffeic, vanillic, p-coumaric, syringic and ferulic. Among these, chlorogenic acid was present in the maximum amount in the leaves and roots. The study concludes that C. album releases phenolics into the soil and these are probably involved in the growth inhibitory effect of C. album.

Keywords: Chenopodium album; aqueous leachates and extracts; debris-amended soil; growth reduction; chlorophyll content; protein content; total phenolics

Document Type: Research article

DOI: http://dx.doi.org/10.1080/03650340601037119

Affiliations: 1: Department of Botany 2: Centre for Environment and Vocational Studies, Panjab University, Chandigarh, India

Publication date: 2006-12-01

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