Herbicidal activity of three natural products on four weed species
Introduction. Certain naturally derived substances may have herbicidal activity on some weeds species. Objective. To evaluate the efficacy of three substances of natural origin for the control of four weed species and to compare it with the effect of a synthetic broad-spectrum herbicide. Materials and methods. In February 2017, an experiment was conducted in a greenhouse at the Fabio Baudrit Moreno Agricultural Experiment Station, Universidad de Costa Rica. Three commercial products of natural origin based on: 55 % d-limonene, 15 % pine extract (Pinus sp.) and 23 % thyme extract (Thymus vulgaris) were evaluated; additionally, a product of synthetic origin, gluphosinate ammonium 14 SL, was evaluated. A none treated check was included. These were sprayed on seedlings of Bidens pilosa, Amaranthus sp., Echinochloa colona and Rottboellia cochinchinensis. Results. The seedlings sprayed with the natural herbicides showed symptoms at two hours, but their final efficacy varied among species. Eight-days after spraying, d-limonene was more effective than all other treatments, showing damage ratings higher than 4.25 in all species. Pine and thyme extracts were not effective on B. pilosa. Pine extract caused greater damage on Amaranthus sp, E. colona, and R. cochinchinensis, while the thyme extract caused greater damage on Amaranthus sp and R. cochinchinensis. The synthetic herbicide gluphosinate showed significant damage on all four species. Conclusions. The commercial products of natural origin used had herbicidal activity on the four weed species tested.
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Universidad de Costa Rica
2021
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Portuguez-García, Mary Pamela Agüero-Alvarado, Renán González-Lutz, María Isabel |
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Portuguez-García, Mary Pamela Agüero-Alvarado, Renán González-Lutz, María Isabel Herbicidal activity of three natural products on four weed species |
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Portuguez-García, Mary Pamela Agüero-Alvarado, Renán González-Lutz, María Isabel |
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Portuguez-García, Mary Pamela |
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Herbicidal activity of three natural products on four weed species |
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Herbicidal activity of three natural products on four weed species |
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Herbicidal activity of three natural products on four weed species |
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Herbicidal activity of three natural products on four weed species |
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Herbicidal activity of three natural products on four weed species |
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herbicidal activity of three natural products on four weed species |
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Introduction. Certain naturally derived substances may have herbicidal activity on some weeds species. Objective. To evaluate the efficacy of three substances of natural origin for the control of four weed species and to compare it with the effect of a synthetic broad-spectrum herbicide. Materials and methods. In February 2017, an experiment was conducted in a greenhouse at the Fabio Baudrit Moreno Agricultural Experiment Station, Universidad de Costa Rica. Three commercial products of natural origin based on: 55 % d-limonene, 15 % pine extract (Pinus sp.) and 23 % thyme extract (Thymus vulgaris) were evaluated; additionally, a product of synthetic origin, gluphosinate ammonium 14 SL, was evaluated. A none treated check was included. These were sprayed on seedlings of Bidens pilosa, Amaranthus sp., Echinochloa colona and Rottboellia cochinchinensis. Results. The seedlings sprayed with the natural herbicides showed symptoms at two hours, but their final efficacy varied among species. Eight-days after spraying, d-limonene was more effective than all other treatments, showing damage ratings higher than 4.25 in all species. Pine and thyme extracts were not effective on B. pilosa. Pine extract caused greater damage on Amaranthus sp, E. colona, and R. cochinchinensis, while the thyme extract caused greater damage on Amaranthus sp and R. cochinchinensis. The synthetic herbicide gluphosinate showed significant damage on all four species. Conclusions. The commercial products of natural origin used had herbicidal activity on the four weed species tested. |
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Universidad de Costa Rica |
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2021 |
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https://revistas.ucr.ac.cr/index.php/agromeso/article/view/41394 |
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oai:portal.ucr.ac.cr:article413942023-06-16T13:44:06Z Herbicidal activity of three natural products on four weed species Actividad herbicida de tres productos naturales sobre cuatro especies de arvenses Portuguez-García, Mary Pamela Agüero-Alvarado, Renán González-Lutz, María Isabel natural herbicides glufosinate d-limonene pine extract thyme extract herbicidas naturales glufosinato d-limoneno extracto de pino extracto de tomillo Introduction. Certain naturally derived substances may have herbicidal activity on some weeds species. Objective. To evaluate the efficacy of three substances of natural origin for the control of four weed species and to compare it with the effect of a synthetic broad-spectrum herbicide. Materials and methods. In February 2017, an experiment was conducted in a greenhouse at the Fabio Baudrit Moreno Agricultural Experiment Station, Universidad de Costa Rica. Three commercial products of natural origin based on: 55 % d-limonene, 15 % pine extract (Pinus sp.) and 23 % thyme extract (Thymus vulgaris) were evaluated; additionally, a product of synthetic origin, gluphosinate ammonium 14 SL, was evaluated. A none treated check was included. These were sprayed on seedlings of Bidens pilosa, Amaranthus sp., Echinochloa colona and Rottboellia cochinchinensis. Results. The seedlings sprayed with the natural herbicides showed symptoms at two hours, but their final efficacy varied among species. Eight-days after spraying, d-limonene was more effective than all other treatments, showing damage ratings higher than 4.25 in all species. Pine and thyme extracts were not effective on B. pilosa. Pine extract caused greater damage on Amaranthus sp, E. colona, and R. cochinchinensis, while the thyme extract caused greater damage on Amaranthus sp and R. cochinchinensis. The synthetic herbicide gluphosinate showed significant damage on all four species. Conclusions. The commercial products of natural origin used had herbicidal activity on the four weed species tested. Introducción. Ciertas sustancias de origen natural pueden tener actividad herbicida sobre algunas especies de arvenses. Objetivo. Evaluar la eficacia de tres sustancias de origen natural para el control de cuatro especies de arvenses y compararla con el efecto de un herbicida sintético de amplio espectro. Materiales y métodos. En febrero del 2017 se condujo un experimento en un invernadero en la Estación Experimental Agrícola Fabio Baudrit Moreno, de la Universidad de Costa Rica. Se evaluaron tres productos comerciales de origen natural a base de: d-limoneno al 55 %, extracto de pino al 15 % (Pinus sp.) y extracto de tomillo al 23 % (Thymus vulgaris); además, se evaluó un producto de origen sintético, glufosinato de amonio 14 SL. Se incluyó un testigo absoluto. Estos se asperjaron sobre plantas de Bidens pilosa, Amaranthus sp., Echinochloa colona y Rottboellia cochinchinensis. Resultados. Las plantas asperjadas con los herbicidas naturales mostraron síntomas a las dos horas, pero su eficacia final varió entre especies. A los ocho días después de la aspersión el d-limoneno resultó más eficaz que todos los demás tratamientos, mostró grados de daño mayores a 4,25 en todas las especies. Con el extracto de pino y el extracto de tomillo no se obtuvo eficacia sobre B. pilosa. El extracto de pino causó mayores daños en Amaranthus sp, E. colona y R. cochinchinensis, mientras que el extracto de tomillo en Amaranthus sp y R. cochinchinensis. El herbicida sintético glufosinato mostró daños significativos en las cuatro especies. Conclusiones. Los productos comerciales de origen natural utilizados, tuvieron actividad herbicida sobre las cuatro especies de arvenses evaluadas. Universidad de Costa Rica 2021-09-01 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Article text/xml application/pdf application/epub+zip text/html audio/mpeg audio/mpeg https://revistas.ucr.ac.cr/index.php/agromeso/article/view/41394 10.15517/am.v32i3.41394 Agronomía Mesoamericana; 2021: Agronomía Mesoamericana: Vol. 32, Issue 3 (September-December); 991-999 Agronomía Mesoamericana; 2021: Agronomía Mesoamericana: Vol. 32, Nº 3 (setiembre-diciembre); 991-999 Agronomía Mesoamericana; 2021: Agronomía Mesoamericana: Vol. 32, Issue 3 (September-December); 991-999 2215-3608 1021-7444 spa eng https://revistas.ucr.ac.cr/index.php/agromeso/article/view/41394/47887 https://revistas.ucr.ac.cr/index.php/agromeso/article/view/41394/47888 https://revistas.ucr.ac.cr/index.php/agromeso/article/view/41394/47889 https://revistas.ucr.ac.cr/index.php/agromeso/article/view/41394/47890 https://revistas.ucr.ac.cr/index.php/agromeso/article/view/41394/47891 https://revistas.ucr.ac.cr/index.php/agromeso/article/view/41394/47892 Copyright (c) 2021 Mary Pamela Portuguez |