Use of multispectral images to evaluate the efficacy of pre-emergent herbicides in peas under greenhouse conditions
In Colombia, peas are the second most important legume after the bean, and weeds are the main biotic factor that limits production, causing losses of up to 100%. Manual control can represent up to 40% of the labor force. The critical period in the crop-weed competition is the first third of the crop...
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Sociedad Colombiana de Ciencias Hortícolas-SCCH and Universidad Pedagógica y Tecnológica de Colombia-UPTC
2021
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| Online Access: | https://revistas.uptc.edu.co/index.php/ciencias_horticolas/article/view/11638 |
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| author | Jamaica-Tenjo, David Alejandro Puerto-Lara, Andrés Esteban Guerrero-Aldana, Jhonatan Javier García-Navarrete, Oscar Leonardo Ligarreto-Moreno, Gustavo Adolfo |
| author_facet | Jamaica-Tenjo, David Alejandro Puerto-Lara, Andrés Esteban Guerrero-Aldana, Jhonatan Javier García-Navarrete, Oscar Leonardo Ligarreto-Moreno, Gustavo Adolfo |
| author_sort | Jamaica-Tenjo, David Alejandro |
| collection | OJS |
| description | In Colombia, peas are the second most important legume after the bean, and weeds are the main biotic factor that limits production, causing losses of up to 100%. Manual control can represent up to 40% of the labor force. The critical period in the crop-weed competition is the first third of the crop cycle; therefore, pre-emergent herbicide applications are a cost-effective way to control weeds. Common variables for assessing weed-control efficacy include, weed density (individuals/area), which is precise but time consuming, and weed coverage (%), which is faster but very subjective. Therefore, pre-emergence herbicides and a weed-control evaluation method that standardizes, facilitates, and provides greater precision are needed for peas cultivation and experimentation. Five pre-emergent herbicides (linuron, S-metolachlor, metribuzine, oxifluorfen and pendimetalin) were evaluated at two doses in a greenhouse pea crop. Also, two methods (quantification process of multispectral images and conventional human visual) for assessing weed coverage and control efficacy were compared. The best herbicide treatment for the dry grain yield was metribuzine (2.36 t ha-1). Furthermore, the effectiveness of the weed control was 88% at 36 days after sowing, which is optimal. Finally, there was agreement between the weed assessment methods (human vs. machine). The intraclass correlation coefficient was over 0.95, which validates the use of machine quantification for weed coverage. |
| format | Online |
| id | oai:oai.revistas.uptc.edu.co:article-11638 |
| institution | Revista Colombiana de Ciencias Hortícolas |
| language | eng |
| publishDate | 2021 |
| publisher | Sociedad Colombiana de Ciencias Hortícolas-SCCH and Universidad Pedagógica y Tecnológica de Colombia-UPTC |
| record_format | ojs |
| spelling | oai:oai.revistas.uptc.edu.co:article-116382021-11-03T13:59:28Z Use of multispectral images to evaluate the efficacy of pre-emergent herbicides in peas under greenhouse conditions Uso de imágenes multiespectrales para la evaluación de la eficacia de herbicidas pre-emergentes en arveja, en condiciones de invernadero Jamaica-Tenjo, David Alejandro Puerto-Lara, Andrés Esteban Guerrero-Aldana, Jhonatan Javier García-Navarrete, Oscar Leonardo Ligarreto-Moreno, Gustavo Adolfo Pisum sativum L. Chemical weed control Herbicide efficacy tests Optical sensor Spectral reflectance Image analysis Malherbology Remote sensing Pisum sativum L. Control químico de malezas Prueba de eficacia con herbicidas Sensor óptico Reflectancia espectral Análisis de imagen Malherbología Teledección In Colombia, peas are the second most important legume after the bean, and weeds are the main biotic factor that limits production, causing losses of up to 100%. Manual control can represent up to 40% of the labor force. The critical period in the crop-weed competition is the first third of the crop cycle; therefore, pre-emergent herbicide applications are a cost-effective way to control weeds. Common variables for assessing weed-control efficacy include, weed density (individuals/area), which is precise but time consuming, and weed coverage (%), which is faster but very subjective. Therefore, pre-emergence herbicides and a weed-control evaluation method that standardizes, facilitates, and provides greater precision are needed for peas cultivation and experimentation. Five pre-emergent herbicides (linuron, S-metolachlor, metribuzine, oxifluorfen and pendimetalin) were evaluated at two doses in a greenhouse pea crop. Also, two methods (quantification process of multispectral images and conventional human visual) for assessing weed coverage and control efficacy were compared. The best herbicide treatment for the dry grain yield was metribuzine (2.36 t ha-1). Furthermore, the effectiveness of the weed control was 88% at 36 days after sowing, which is optimal. Finally, there was agreement between the weed assessment methods (human vs. machine). The intraclass correlation coefficient was over 0.95, which validates the use of machine quantification for weed coverage. En Colombia, la arveja es la segunda leguminosa más importante en superficie después del frijol, y las malezas son el principal factor biótico que limita su producción, provocando pérdidas de hasta el 100%, y su control manual puede representar hasta el 40% de la mano de obra necesaria para su producción. El período crítico de competencia cultivo-malezas es el primer tercio del ciclo del cultivo, por lo tanto, la aplicación de herbicidas pre-emergentes es una forma rentable de control de malezas. Para evaluar la eficacia del control de malezas, las variables más comunes es la densidad de malezas (individuos/área): precisa, pero requiere mucho tiempo, o cobertura de malezas (%): más rápida, pero muy subjetiva. Por lo tanto, encontrar herbicidas preemergentes para arveja y un método de evaluación del control de malezas que estandarice, facilite y dé mayor precisión es una tarea imperativa. Se evaluaron cinco herbicidas preemergentes (linuron, S-metolachlor, metribuzine, oxifluorfen y pendimetalin) a dos dosis en un cultivo de arvejas bajo invernadero. Además, se compararon dos métodos diferentes para evaluar la cobertura de malezas y la eficacia del control (proceso de cuantificación de imágenes multiespectrales y estimación visual humana convencional). El mejor tratamiento herbicida para el rendimiento de grano seco fue la metribuzina (2,36 t ha-1). Además, la efectividad del control de malezas fue del 88% a los 36 días después de la siembra, lo que se considera óptimo. Finalmente, se encontró concordancia entre los métodos de evaluación de malezas (humano vs. máquina). El coeficiente de correlación intraclase fue superior a 0,95, lo que valida el uso de esta metodología de cuantificación de la cobertura de malezas. Sociedad Colombiana de Ciencias Hortícolas-SCCH and Universidad Pedagógica y Tecnológica de Colombia-UPTC 2021-05-06 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Text Texto application/pdf https://revistas.uptc.edu.co/index.php/ciencias_horticolas/article/view/11638 10.17584/rcch.2021v15i2.11638 Revista Colombiana de Ciencias Hortícolas; Vol. 15 No. 2 (2021); e11638 Revista Colombiana de Ciencias Hortícolas; Vol. 15 Núm. 2 (2021); e11638 Revista Colombiana de Ciencias Hortícolas; Vol. 15 No 2 (2021); e11638 Revista Colombiana de Ciencias Hortícolas; V. 15 N. 2 (2021); e11638 Revista Colombiana de Ciencias Hortícolas; v. 15 n. 2 (2021); e11638 2422-3719 2011-2173 eng https://revistas.uptc.edu.co/index.php/ciencias_horticolas/article/view/11638/10575 Colombia, Bogota Colombia, Bogota Copyright (c) 2021 Revista Colombiana de Ciencias Hortícolas |
| spellingShingle | Pisum sativum L. Chemical weed control Herbicide efficacy tests Optical sensor Spectral reflectance Image analysis Malherbology Remote sensing Pisum sativum L. Control químico de malezas Prueba de eficacia con herbicidas Sensor óptico Reflectancia espectral Análisis de imagen Malherbología Teledección Jamaica-Tenjo, David Alejandro Puerto-Lara, Andrés Esteban Guerrero-Aldana, Jhonatan Javier García-Navarrete, Oscar Leonardo Ligarreto-Moreno, Gustavo Adolfo Use of multispectral images to evaluate the efficacy of pre-emergent herbicides in peas under greenhouse conditions |
| title | Use of multispectral images to evaluate the efficacy of pre-emergent herbicides in peas under greenhouse conditions |
| title_alt | Uso de imágenes multiespectrales para la evaluación de la eficacia de herbicidas pre-emergentes en arveja, en condiciones de invernadero |
| title_full | Use of multispectral images to evaluate the efficacy of pre-emergent herbicides in peas under greenhouse conditions |
| title_fullStr | Use of multispectral images to evaluate the efficacy of pre-emergent herbicides in peas under greenhouse conditions |
| title_full_unstemmed | Use of multispectral images to evaluate the efficacy of pre-emergent herbicides in peas under greenhouse conditions |
| title_short | Use of multispectral images to evaluate the efficacy of pre-emergent herbicides in peas under greenhouse conditions |
| title_sort | use of multispectral images to evaluate the efficacy of pre emergent herbicides in peas under greenhouse conditions |
| topic | Pisum sativum L. Chemical weed control Herbicide efficacy tests Optical sensor Spectral reflectance Image analysis Malherbology Remote sensing Pisum sativum L. Control químico de malezas Prueba de eficacia con herbicidas Sensor óptico Reflectancia espectral Análisis de imagen Malherbología Teledección |
| topic_facet | Pisum sativum L. Chemical weed control Herbicide efficacy tests Optical sensor Spectral reflectance Image analysis Malherbology Remote sensing Pisum sativum L. Control químico de malezas Prueba de eficacia con herbicidas Sensor óptico Reflectancia espectral Análisis de imagen Malherbología Teledección |
| url | https://revistas.uptc.edu.co/index.php/ciencias_horticolas/article/view/11638 |
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