Incidence of the stem borer Diatraea saccharalis (Lepidoptera: Pyralidae) on corn crop yield and calculation of economic injury levels
Diatraea saccharalis is a key pest of corn cultivation in the Pampas region of Argentina. The economic thresholds used are nominal and are not based on the current calculation of the economic injury level. The goals of this work were: to characterize the relationship between the infestation pressure...
| Main Authors: | , |
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| Format: | Online |
| Language: | spa |
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Facultad de Ciencias Agropecuarias
2020
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| Online Access: | https://revistas.unc.edu.ar/index.php/agris/article/view/24402 |
| _version_ | 1811172634606436352 |
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| author | Serra, Gerardo Trumper, Eduardo Victor |
| author_facet | Serra, Gerardo Trumper, Eduardo Victor |
| author_sort | Serra, Gerardo |
| collection | Portal de Revistas |
| description | Diatraea saccharalis is a key pest of corn cultivation in the Pampas region of Argentina. The economic thresholds used are nominal and are not based on the current calculation of the economic injury level. The goals of this work were: to characterize the relationship between the infestation pressure of D. saccharalis and the yield of the corn crop and to calculate economic injury levels in different situations of crop development.A test was carried out with the hybrid DK696 with natural irrigation and infestation, following a split plot experimental design with five sowing dates and different crop protection windows.The yield showed a linear relationship with the intensity of injury caused by D. saccharalis and this response was independent of the sowing date. Injury caused to the middle third of the plants showed the greatest influence in the determination of yield, followed by the lower stratum, while damage to the upper stratum did not show a relationship with yield. Economic injury levels are proposed for different price scenarios. |
| format | Online |
| id | oai:ojs.revistas.unc.edu.ar:article-24402 |
| institution | Universidad Nacional de Cordoba |
| language | spa |
| publishDate | 2020 |
| publisher | Facultad de Ciencias Agropecuarias |
| record_format | ojs |
| spelling | oai:ojs.revistas.unc.edu.ar:article-244022023-11-30T18:46:14Z Incidence of the stem borer Diatraea saccharalis (Lepidoptera: Pyralidae) on corn crop yield and calculation of economic injury levels Incidencia del barrenador del tallo Diatraea saccharalis (Lepidoptera: Pyralidae) sobre el rendimiento del cultivo de maíz y cálculo de niveles de daño económicos Serra, Gerardo Trumper, Eduardo Victor stem borer zea mays damage function barrenador de tallo zea mays función de daño Diatraea saccharalis is a key pest of corn cultivation in the Pampas region of Argentina. The economic thresholds used are nominal and are not based on the current calculation of the economic injury level. The goals of this work were: to characterize the relationship between the infestation pressure of D. saccharalis and the yield of the corn crop and to calculate economic injury levels in different situations of crop development.A test was carried out with the hybrid DK696 with natural irrigation and infestation, following a split plot experimental design with five sowing dates and different crop protection windows.The yield showed a linear relationship with the intensity of injury caused by D. saccharalis and this response was independent of the sowing date. Injury caused to the middle third of the plants showed the greatest influence in the determination of yield, followed by the lower stratum, while damage to the upper stratum did not show a relationship with yield. Economic injury levels are proposed for different price scenarios. Diatraea saccharalis es una plaga clave del cultivo de maíz en la región pampeana argentina. Los umbrales económicos que se utilizan no están basados en un cálculo actual del nivel de daño económico. Los objetivos de este trabajo fueron: caracterizar la relación existente entre presión de infestación de D. saccharalis y rendimiento del cultivo de maíz, y calcular niveles de daño económico en distintas situaciones de desarrollo del cultivo. Se realizó un ensayo con el híbrido DK696 con riego e infestación natural, siguiendo un diseño experimental de parcelas divididas con cinco fechas de siembra y distintas ventanas de protección al cultivo. El rendimiento mostró una relación lineal con la intensidad de daño medida como número de entrenudos barrenados por larvas grandes. La actividad de las larvas se concentra en el estrato medio e inferior de la planta, independientemente de la fecha de siembra y del estado fenológico en que comenzó el ataque. El daño en el tercio medio de las plantas mostró la mayor influencia en la determinación del rendimiento, seguido por el estrato inferior, mientras que daños en el estrato superior no afectaron el rendimiento. Se proponen niveles de daño económico para distintos escenarios de desarrollo del cultivo. Facultad de Ciencias Agropecuarias 2020-06-30 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion application/pdf https://revistas.unc.edu.ar/index.php/agris/article/view/24402 10.31047/1668.298x.v37.n1.24402 AgriScientia; Vol. 37 No. 1 (2020); 63-73 AgriScientia; Vol. 37 Núm. 1 (2020); 63-73 1668-298X 10.31047/1668.298x.v37.n1 spa https://revistas.unc.edu.ar/index.php/agris/article/view/24402/30044 Derechos de autor 2020 Gerardo Serra, Eduardo Victor Trumper https://creativecommons.org/licenses/by-sa/4.0 |
| spellingShingle | stem borer zea mays damage function barrenador de tallo zea mays función de daño Serra, Gerardo Trumper, Eduardo Victor Incidence of the stem borer Diatraea saccharalis (Lepidoptera: Pyralidae) on corn crop yield and calculation of economic injury levels |
| title | Incidence of the stem borer Diatraea saccharalis (Lepidoptera: Pyralidae) on corn crop yield and calculation of economic injury levels |
| title_alt | Incidencia del barrenador del tallo Diatraea saccharalis (Lepidoptera: Pyralidae) sobre el rendimiento del cultivo de maíz y cálculo de niveles de daño económicos |
| title_full | Incidence of the stem borer Diatraea saccharalis (Lepidoptera: Pyralidae) on corn crop yield and calculation of economic injury levels |
| title_fullStr | Incidence of the stem borer Diatraea saccharalis (Lepidoptera: Pyralidae) on corn crop yield and calculation of economic injury levels |
| title_full_unstemmed | Incidence of the stem borer Diatraea saccharalis (Lepidoptera: Pyralidae) on corn crop yield and calculation of economic injury levels |
| title_short | Incidence of the stem borer Diatraea saccharalis (Lepidoptera: Pyralidae) on corn crop yield and calculation of economic injury levels |
| title_sort | incidence of the stem borer diatraea saccharalis lepidoptera pyralidae on corn crop yield and calculation of economic injury levels |
| topic | stem borer zea mays damage function barrenador de tallo zea mays función de daño |
| topic_facet | stem borer zea mays damage function barrenador de tallo zea mays función de daño |
| url | https://revistas.unc.edu.ar/index.php/agris/article/view/24402 |
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