How Lamb's Quarters Affect Other Plants with Their Leachates, Decay, and Oils

Greg Howard
2nd May, 2025

How Lamb's Quarters Affect Other Plants with Their Leachates, Decay, and Oils

The study reveals that chemical compounds released from common lambsquarters Chenopodium album (1), Chenopodium murale (2), and especially the invasive Chenopodium ambrosioides (3), demonstrate significant allelopathic potential by inhibiting the germination and growth of crops like wheat Triticum aestivum (7) and faba bean Vicia faba (4), as well as common weeds like bindweed Convolvulus arvensis (5) and brome Bromus rigidus (6).

Composite: Natural Science News / CC BY. [Sources]
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Key Findings

  • Researchers in Türkiye discovered that the aboveground parts of Chenopodium weeds release chemicals that strongly inhibit other plants' growth
  • Among the three species studied, C. ambrosioides produced the highest levels of these growth-inhibiting chemicals, making it the most effective
  • Extracts from these weeds, especially C. ambrosioides, show promise as natural herbicides for sustainable weed management
Chenopodium species, commonly recognized as weeds, play a significant role in both environmental dynamics and agricultural productivity. Understanding their behavior and impact is crucial for developing effective management strategies. A recent study conducted by researchers at Canakkale Onsekiz Mart University in Türkiye[1] delves into the allelopathic properties of three Chenopodium species: C. album, C. murale, and C. ambrosioides. Allelopathy refers to the chemical inhibition of one plant by another, affecting growth and development through the release of bioactive compounds. The study aimed to investigate how these Chenopodium species influence their surrounding environment and crop systems. By examining different parts of the plants—specifically aboveground and subterranean sections—the researchers assessed the potency of their allelopathic effects. They utilized water extracts, decaying residues, and volatilization methods to measure the impact on various plant traits and soil characteristics. One of the key findings was that water extracts from the aboveground parts of the plants exhibited stronger allelopathic effects compared to those from belowground parts. This suggests that the aerial components of Chenopodium species are more influential in releasing compounds that inhibit the growth of other plants. The study identified two primary allelochemicals: coumaric acid and ferulic acid. These compounds were present in varying concentrations across the three species, with C. ambrosioides showing the highest levels. Further analysis using Gas Chromatography-Mass Spectrometry (GC-MS) revealed that the essential oils from the shoot parts contained significant amounts of ascaridole in C. ambrosioides and carvacrol in both C. murale and C. album. These essential oils were particularly effective in suppressing the germination and growth of weeds such as B. rigidus and C. arvensis. Among the three species tested, C. ambrosioides and C. murale demonstrated the strongest inhibitory effects, followed by C. album. This research builds on previous studies that have explored the various properties of Chenopodium species. For instance, a study from King Khalid University[2] highlighted the antioxidant and cytotoxic properties of lipophilic compounds extracted from different parts of Chenopodium plants. The high phenolic content found in these extracts, particularly in the herbs and seeds, underscores the potential of these plants as sources of natural antioxidants for pharmaceutical and food supplement industries. Additionally, research from Al-Azhar University[3] emphasized the economic impact of C. album and C. murale as invasive weeds, noting their high reproductive capacity and allelopathic nature that contribute to significant crop yield losses. The current study’s findings align with previous research by demonstrating the potent biological activities of Chenopodium species. While earlier studies focused on antioxidant and antimicrobial properties, this investigation sheds light on the allelopathic mechanisms that make these plants formidable competitors in agricultural settings. The identification of specific allelochemicals provides a deeper understanding of how Chenopodium species exert their inhibitory effects, which could inform the development of natural herbicides. Moreover, the study addresses the challenge of controlling these persistent weeds. As highlighted by Al-Azhar University[3], traditional methods such as cultural and mechanical controls have had limited success, especially given the evolving herbicide resistance in C. album. The findings from Canakkale Onsekiz Mart University suggest that leveraging the natural allelopathic compounds of Chenopodium species themselves could offer alternative strategies for weed management. By incorporating plant residues or utilizing specific extracts, it may be possible to suppress weed growth more sustainably and reduce reliance on chemical herbicides. The research also resonates with findings from the Desert Research Center, which explored the antibacterial properties of Chenopodium album essential oils[4]. The presence of bioactive compounds like phytol and linalool not only contributes to antimicrobial activity but also plays a role in the plant’s allelopathic effects. This dual functionality highlights the multifaceted potential of Chenopodium species in both agricultural and medical applications. In conclusion, the study by Canakkale Onsekiz Mart University advances our understanding of the allelopathic properties of Chenopodium species. By identifying key allelochemicals and demonstrating their inhibitory effects on other plants, the research provides valuable insights for developing natural weed control methods. This approach not only addresses the economic challenges posed by invasive Chenopodium species but also promotes environmentally friendly agricultural practices. Integrating these findings with previous research underscores the versatility and importance of Chenopodium species in various scientific and practical contexts.

BiochemEcologyPlant Science

References

Main Study

1) Allelopathic pathways and impacts of Chenopodium species via leachates, decaying residues, and essential oils

Published 29th April, 2025

https://doi.org/10.1371/journal.pone.0321782

Related Studies

2) Antioxidative and cytotoxic potential of some Chenopodium L. species growing in Poland.

https://doi.org/10.1016/j.sjbs.2015.01.017

3) A global perspective on the biology, impact and management of Chenopodium album and Chenopodium murale: two troublesome agricultural and environmental weeds.

https://doi.org/10.1007/s11356-018-04104-y

4) Essential oil composition and in vitro antibacterial activity of Chenopodium album subsp. striatum.

https://doi.org/10.1556/018.69.2018.2.4


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