Efecto del control de malezas con paraquat y glifosato sobre la erosión y pérdida de nutrimentos del suelo en cafeto.
Effects of weed control with paraquat and glyphosate on erosion and soil nutrient losses in coffee. A trial was conducted during 2002-2003 at Alajuela, Costa Rica to determine weed control, weed dynamics, soil erosion and nutrient losses due to successive applications of paraquat and glyphosate. Two plots of 900 m2 were treated with paraquat and two more plots were treated with glyphosate. During 2003 one plot of each treatment was ammended with calcium carbonate and organic mater (shell of coffee berry). Run-off water and sediments from a 2 x 7 m plot were collected into a 200 l drum. The amount of nutrient lost from each plot was determined. The first year both treatments provided 90-100% of weed control but tolerant weeds were selected. A mechanical control and an increase of the herbicides application rate were necessary to keep these weeds under control. During 2002 soil losses from glyphosate treatments were double (3.956 MT/ha) compared to that occurred from the paraquat treated areas (1.936 MT/ha). During 2003 at the amended plots again areas treated with paraquat had less erosion (0,231 MT/ha) vs 0,329 MT/ha from glyphosate sprayed plots. Soil losses from the amended plots were 0,170 MT/ha and 0,187MT/ha, respectively. Sediment analysis indicates that Ca, Mg & K losses were similar in both treatments. In 2003 the estimated yield was similar in both areas.
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Universidad de Costa Rica
2005
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oai:portal.ucr.ac.cr:article51842023-06-16T13:54:57Z Efecto del control de malezas con paraquat y glifosato sobre la erosión y pérdida de nutrimentos del suelo en cafeto. Efecto del control de malezas con paraquat y glifosato sobre la erosión y pérdida de nutrimentos del suelo en cafeto. Gómez Gómez, Robin Effects of weed control with paraquat and glyphosate on erosion and soil nutrient losses in coffee. A trial was conducted during 2002-2003 at Alajuela, Costa Rica to determine weed control, weed dynamics, soil erosion and nutrient losses due to successive applications of paraquat and glyphosate. Two plots of 900 m2 were treated with paraquat and two more plots were treated with glyphosate. During 2003 one plot of each treatment was ammended with calcium carbonate and organic mater (shell of coffee berry). Run-off water and sediments from a 2 x 7 m plot were collected into a 200 l drum. The amount of nutrient lost from each plot was determined. The first year both treatments provided 90-100% of weed control but tolerant weeds were selected. A mechanical control and an increase of the herbicides application rate were necessary to keep these weeds under control. During 2002 soil losses from glyphosate treatments were double (3.956 MT/ha) compared to that occurred from the paraquat treated areas (1.936 MT/ha). During 2003 at the amended plots again areas treated with paraquat had less erosion (0,231 MT/ha) vs 0,329 MT/ha from glyphosate sprayed plots. Soil losses from the amended plots were 0,170 MT/ha and 0,187MT/ha, respectively. Sediment analysis indicates that Ca, Mg & K losses were similar in both treatments. In 2003 the estimated yield was similar in both areas. Efecto del control de malezas con paraquat y glifosato sobre la erosión y pérdida de nutrimentos del suelo en cafeto. En Alajuela, Costa Rica, se realizó un experimento en los años 2002 y 2003 tendiente a determinar el control de malezas, la dinámica poblacional de las malezas y la erosión y pérdida de nutrimentos del suelo debido a aplicaciones sucesivas de paraquat y glifosato. Dos parcelas de 900 m2 dentro de una plantación de café fueron aplicadas con paraquat y dos más tratadas con glifosato. En el año 2003 una parcela de cada tratamiento fue disturbada aplicándole materia orgánica (broza de café) y carbonato de calcio. El agua de escorrentía y los sedimentos provenientes de parcelas de 2x7m fueron recogidos en colectores de 200 litros de capacidad y se midieron las pérdidas de nutrientes. Al inicio de los tratamientos el control de malezas con ambos herbicidas fue de 90-100%, posteriormente con las continuas aplicaciones de herbicidas, se presentaron malezas tolerantes, haciendo necesario el control mecánico y aumentar la dosis del herbicida para controlarlas. Durante el 2002 las pérdidas de suelo de las parcelas tratadas con glifosato fueron el doble (3,956 t/ha) comparadas con las ocurridas en las parcelas aplicadas con paraquat (1,936 t/ha). En el 2003, en las parcelas no disturbadas tratadas con paraquat se determinó menos erosión (0,231 t/ha) en comparación con 0,329 t/ha en aquellas aplicadas con glifosato. Asimismo, en las parcelas disturbadas por enmiendas las pérdidas fueron menores en las aplicadas con paraquat: 0,170 vs. 0,187 t/ha de glifosato. Los análisis de sedimentos y agua mostraron una pérdida importante de Ca, Mg y K, similar en ambos tratamientos. El rendimiento estimado en el año 2003 fue muy similar en ambos tratamientos. Universidad de Costa Rica 2005-04-03 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Article application/pdf https://revistas.ucr.ac.cr/index.php/agromeso/article/view/5184 10.15517/am.v16i1.5184 Agronomía Mesoamericana; 2005: Agronomía Mesoamericana: Vol. 16, Issue 1 (January-June); 77-87 Agronomía Mesoamericana; 2005: Agronomía Mesoamericana: Vol 16, N° 1 (Enero-junio); 77-87 Agronomía Mesoamericana; 2005: Agronomía Mesoamericana: Vol. 16, Issue 1 (January-June); 77-87 2215-3608 1021-7444 spa https://revistas.ucr.ac.cr/index.php/agromeso/article/view/5184/4984 |
| institution |
UCR |
| collection |
OJS |
| country |
Costa Rica |
| countrycode |
CR |
| component |
Revista |
| access |
En linea |
| databasecode |
rev-agromeso |
| tag |
revista |
| region |
America Central |
| libraryname |
Bibioteca de la Facultad de Agronomía |
| language |
spa |
| format |
Digital |
| author |
Gómez Gómez, Robin |
| spellingShingle |
Gómez Gómez, Robin Efecto del control de malezas con paraquat y glifosato sobre la erosión y pérdida de nutrimentos del suelo en cafeto. |
| author_facet |
Gómez Gómez, Robin |
| author_sort |
Gómez Gómez, Robin |
| title |
Efecto del control de malezas con paraquat y glifosato sobre la erosión y pérdida de nutrimentos del suelo en cafeto. |
| title_short |
Efecto del control de malezas con paraquat y glifosato sobre la erosión y pérdida de nutrimentos del suelo en cafeto. |
| title_full |
Efecto del control de malezas con paraquat y glifosato sobre la erosión y pérdida de nutrimentos del suelo en cafeto. |
| title_fullStr |
Efecto del control de malezas con paraquat y glifosato sobre la erosión y pérdida de nutrimentos del suelo en cafeto. |
| title_full_unstemmed |
Efecto del control de malezas con paraquat y glifosato sobre la erosión y pérdida de nutrimentos del suelo en cafeto. |
| title_sort |
efecto del control de malezas con paraquat y glifosato sobre la erosión y pérdida de nutrimentos del suelo en cafeto. |
| description |
Effects of weed control with paraquat and glyphosate on erosion and soil nutrient losses in coffee. A trial was conducted during 2002-2003 at Alajuela, Costa Rica to determine weed control, weed dynamics, soil erosion and nutrient losses due to successive applications of paraquat and glyphosate. Two plots of 900 m2 were treated with paraquat and two more plots were treated with glyphosate. During 2003 one plot of each treatment was ammended with calcium carbonate and organic mater (shell of coffee berry). Run-off water and sediments from a 2 x 7 m plot were collected into a 200 l drum. The amount of nutrient lost from each plot was determined. The first year both treatments provided 90-100% of weed control but tolerant weeds were selected. A mechanical control and an increase of the herbicides application rate were necessary to keep these weeds under control. During 2002 soil losses from glyphosate treatments were double (3.956 MT/ha) compared to that occurred from the paraquat treated areas (1.936 MT/ha). During 2003 at the amended plots again areas treated with paraquat had less erosion (0,231 MT/ha) vs 0,329 MT/ha from glyphosate sprayed plots. Soil losses from the amended plots were 0,170 MT/ha and 0,187MT/ha, respectively. Sediment analysis indicates that Ca, Mg & K losses were similar in both treatments. In 2003 the estimated yield was similar in both areas. |
| publisher |
Universidad de Costa Rica |
| publishDate |
2005 |
| url |
https://revistas.ucr.ac.cr/index.php/agromeso/article/view/5184 |
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