Damage levels caused by Capulinia linarosae Kondo & Gullan (Hemiptera: Eriococcidae) on guava crops under two agronomic management practices in the south of Lake Maracaibo, Venezuela
The objective of the present study was to test the hypothesis of no difference in the level of damage caused by the guava cottony scale Capulinia linarosae (Hemiptera: Eriococcidae) in two guava crops under different agronomic management practices; a crop with organic management practices (PUA) was...
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| Format: | Online |
| Language: | eng |
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Sociedad Colombiana de Ciencias Hortícolas-SCCH and Universidad Pedagógica y Tecnológica de Colombia-UPTC
2020
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| Online Access: | https://revistas.uptc.edu.co/index.php/ciencias_horticolas/article/view/8842 |
| _version_ | 1801706294428565504 |
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| author | Redondo-Méndez, Jean Franco Molina-Molina, Misael |
| author_facet | Redondo-Méndez, Jean Franco Molina-Molina, Misael |
| author_sort | Redondo-Méndez, Jean Franco |
| collection | OJS |
| description | The objective of the present study was to test the hypothesis of no difference in the level of damage caused by the guava cottony scale Capulinia linarosae (Hemiptera: Eriococcidae) in two guava crops under different agronomic management practices; a crop with organic management practices (PUA) was compared with another subjected to chemical methods (PUB). Forty plants on each farm were selected randomly to estimate damage on the stems, branches, leaves, and fruits. The levels of damage were statistically different (P<0.0001) between the methods for the stems and branches but not for the leaves or fruits (P>0.05). It was concluded that the magnitude of damage was greater in the crop under chemical control and that agronomic management was a critical factor. Excess insecticides and incorrect pruning applications cause damage to plant bark and favor insect proliferation. While the use of a sulfur-calcium broth in PUA regulated pH, it favored the effect of other products and promoted the growth of green algae, which covered bark crevices and inhibited cottony scale establishment. The excessive use of agrochemicals for weed control in PUB caused soil nudity and killed natural enemies, whereas, in PUA, the grass layer was clipped at 20 cm from the soil, maintaining moisture and creating a favorable habitat for natural enemies. |
| format | Online |
| id | oai:oai.revistas.uptc.edu.co:article-8842 |
| institution | Revista Colombiana de Ciencias Hortícolas |
| language | eng |
| publishDate | 2020 |
| 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-88422020-12-23T15:26:53Z Damage levels caused by Capulinia linarosae Kondo & Gullan (Hemiptera: Eriococcidae) on guava crops under two agronomic management practices in the south of Lake Maracaibo, Venezuela Niveles de daño causados por Capulinia linarosae Kondo & Gullan (Hemiptera: Eriococcidae) en cultivos de guayaba bajo dos prácticas de manejo agronómico en el sur del lago de Maracaibo, Venezuela Redondo-Méndez, Jean Franco Molina-Molina, Misael Control methods Psidium guajava Cottony scale Alternative agriculture Integrated pest management Integrated pest management Alternative agriculture Métodos de control Psidium guajava Mota blanca Agricultura alternativa Manejo integrado de plagas Manejo integrado de plagas Agricultura alternativa The objective of the present study was to test the hypothesis of no difference in the level of damage caused by the guava cottony scale Capulinia linarosae (Hemiptera: Eriococcidae) in two guava crops under different agronomic management practices; a crop with organic management practices (PUA) was compared with another subjected to chemical methods (PUB). Forty plants on each farm were selected randomly to estimate damage on the stems, branches, leaves, and fruits. The levels of damage were statistically different (P<0.0001) between the methods for the stems and branches but not for the leaves or fruits (P>0.05). It was concluded that the magnitude of damage was greater in the crop under chemical control and that agronomic management was a critical factor. Excess insecticides and incorrect pruning applications cause damage to plant bark and favor insect proliferation. While the use of a sulfur-calcium broth in PUA regulated pH, it favored the effect of other products and promoted the growth of green algae, which covered bark crevices and inhibited cottony scale establishment. The excessive use of agrochemicals for weed control in PUB caused soil nudity and killed natural enemies, whereas, in PUA, the grass layer was clipped at 20 cm from the soil, maintaining moisture and creating a favorable habitat for natural enemies. El objetivo del estudio fue someter a prueba la hipótesis de que no hay diferencias en el nivel del daño causado por Capulinia linarosae (Hemiptera: Eriococcidae) en dos cultivos de guayaba sometidos a prácticas de manejos agronómicos diferentes: se comparó un cultivo cuyas prácticas de manejo tienden a orgánicas (UPA) con otro sometido a métodos químicos (UPB). En cada cultivo se seleccionaron 40 plantas al azar para estimar el daño en tallos, ramas, hojas y frutos. Se encontraron diferencias estadísticamente significativas (P<0,0001) entre los dos métodos de control para tallos y ramas, pero no para hojas ni frutos (P>0,05). Se concluye que la magnitud del daño es mayor en el cultivo sometido a control químico y que el manejo agronómico es un factor crítico. El exceso de insecticidas y la aplicación incorrecta de podas en la UPB dañan la corteza de las plantas y favorecen la proliferación del insecto. Mientras que el uso de caldo Sulfo-cálcico en la UPA regula el pH, favorece el efecto de otros productos y promueve el establecimiento de algas verdes que cubren las grietas dificultando el establecimiento del insecto. El exceso de agroquímicos para el control de malezas en UPB deja el suelo desnudo, matando sus enemigos naturales, mientras que en la UPA se corta el estrato herbáceo a unos 20 cm del suelo, manteniendo su humedad y creando un hábitat favorable a los controladores biológicos. Sociedad Colombiana de Ciencias Hortícolas-SCCH and Universidad Pedagógica y Tecnológica de Colombia-UPTC 2020-01-01 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/8842 10.17584/rcch.2020v14i1.8842 Revista Colombiana de Ciencias Hortícolas; Vol. 14 No. 1 (2020); 17-25 Revista Colombiana de Ciencias Hortícolas; Vol. 14 Núm. 1 (2020); 17-25 Revista Colombiana de Ciencias Hortícolas; Vol. 14 No 1 (2020); 17-25 Revista Colombiana de Ciencias Hortícolas; V. 14 N. 1 (2020); 17-25 Revista Colombiana de Ciencias Hortícolas; v. 14 n. 1 (2020); 17-25 2422-3719 2011-2173 eng https://revistas.uptc.edu.co/index.php/ciencias_horticolas/article/view/8842/9284 Venezuela; Zulia; Colón Venezuela; Zulia; Colón Copyright (c) 2020 Revista Colombiana de Ciencias Hortícolas |
| spellingShingle | Control methods Psidium guajava Cottony scale Alternative agriculture Integrated pest management Integrated pest management Alternative agriculture Métodos de control Psidium guajava Mota blanca Agricultura alternativa Manejo integrado de plagas Manejo integrado de plagas Agricultura alternativa Redondo-Méndez, Jean Franco Molina-Molina, Misael Damage levels caused by Capulinia linarosae Kondo & Gullan (Hemiptera: Eriococcidae) on guava crops under two agronomic management practices in the south of Lake Maracaibo, Venezuela |
| title | Damage levels caused by Capulinia linarosae Kondo & Gullan (Hemiptera: Eriococcidae) on guava crops under two agronomic management practices in the south of Lake Maracaibo, Venezuela |
| title_alt | Niveles de daño causados por Capulinia linarosae Kondo & Gullan (Hemiptera: Eriococcidae) en cultivos de guayaba bajo dos prácticas de manejo agronómico en el sur del lago de Maracaibo, Venezuela |
| title_full | Damage levels caused by Capulinia linarosae Kondo & Gullan (Hemiptera: Eriococcidae) on guava crops under two agronomic management practices in the south of Lake Maracaibo, Venezuela |
| title_fullStr | Damage levels caused by Capulinia linarosae Kondo & Gullan (Hemiptera: Eriococcidae) on guava crops under two agronomic management practices in the south of Lake Maracaibo, Venezuela |
| title_full_unstemmed | Damage levels caused by Capulinia linarosae Kondo & Gullan (Hemiptera: Eriococcidae) on guava crops under two agronomic management practices in the south of Lake Maracaibo, Venezuela |
| title_short | Damage levels caused by Capulinia linarosae Kondo & Gullan (Hemiptera: Eriococcidae) on guava crops under two agronomic management practices in the south of Lake Maracaibo, Venezuela |
| title_sort | damage levels caused by capulinia linarosae kondo gullan hemiptera eriococcidae on guava crops under two agronomic management practices in the south of lake maracaibo venezuela |
| topic | Control methods Psidium guajava Cottony scale Alternative agriculture Integrated pest management Integrated pest management Alternative agriculture Métodos de control Psidium guajava Mota blanca Agricultura alternativa Manejo integrado de plagas Manejo integrado de plagas Agricultura alternativa |
| topic_facet | Control methods Psidium guajava Cottony scale Alternative agriculture Integrated pest management Integrated pest management Alternative agriculture Métodos de control Psidium guajava Mota blanca Agricultura alternativa Manejo integrado de plagas Manejo integrado de plagas Agricultura alternativa |
| url | https://revistas.uptc.edu.co/index.php/ciencias_horticolas/article/view/8842 |
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