Evaluation of the Allelopathic Potential of Love Grass (Chrysopogon aciculatus (Retz.) Trin.) Among the Different Screening Conditions

Received: 03-03-2021

Accepted: 21-10-2022

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Issue: Vol. 20 No. 10 (2022)

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KỸ THUẬT VÀ CÔNG NGHỆ

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Thang, P., Vien, N., Nhung, N., Linh, N., & Khanh, T. (2024). Evaluation of the Allelopathic Potential of Love Grass (Chrysopogon aciculatus (Retz.) Trin.) Among the Different Screening Conditions. Vietnam Journal of Agricultural Sciences, 20(10), 1361–1373. http://testtapchi.vnua.edu.vn/index.php/vjasvn/article/view/1061

Evaluation of the Allelopathic Potential of Love Grass (Chrysopogon aciculatus (Retz.) Trin.) Among the Different Screening Conditions

Phan Trung Thang (*) 1 , Nguyen Van Vien 1 , Nguyen Thanh Nhung 2 , Nguyen Ha Trang Linh 2 , Tran Dang Khanh 3

  • 1 Khoa Nông học, Học viện Nông nghiệp Việt Nam
  • 2 Viện Di truyền Nông nghiệp
  • 3 Viện Di truyền Nông nghiệp Việt Nam

    • Keywords

    Love grass (Chrysopogon aciculatus(Retz.) Trin.), allelopathy, barnyardgrass, indicator plants

    Abstract


    Love grass, Chrysopogon aciculatus(Retz.) Trin., is a perennial grass of the family Poaceae. In this study, the allelopathic potential of this grass was evaluated in different screening conditions. In bioassay, the seedlings of barnyardgrass, rice and mung bean were significantly inhibited at the concentration of 50 g/l of love grass powder;the average inhibition was 56.86%, 52.61% and 46.24%, respectively. Especially, the root growth of the indicator plants was remarkably suppressed. In net house conditions, the germination rate and shoot length of barnyardgrass were inhibited compared with the control treatments. Application of 200 g/m2of the lovegrass powder, the average inhibition was the highest by 42.14%. In the field trial condition, the biomass (fresh weight and dry weight) of barnyardgrass was significantly suppressed which was similar to the net house condition. The highest average inhibition was 37.6%. Moreover, applying 200 g/m2of C. aciculatuspowder reduced the biomass of weeds and simultaneously increased rice yield compared with the control.

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