Weeds and ground-dwelling predators' response to two different weed management systems in glyphosate-tolerant cotton: A farm-scale study
| Autor: | María Cristina Chueca, Félix Ortego, Iñigo Loureiro, Francisco J. Sánchez, Elena Gutiérrez, Gema P. Farinós, Pedro Castañera, María Concepción Escorial, Esteban García-Ruiz, Pablo Gómez |
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| Přispěvatelé: | Ministerio de Medio Ambiente y Medio Rural y Marino (España) |
| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: |
0106 biological sciences
Insecta Biodiversity Plant Weeds lcsh:Medicine Cotton 01 natural sciences Predation chemistry.chemical_compound Beetles Abundance (ecology) lcsh:Science Flowering Plants Multidisciplinary Ecology Eukaryota Agriculture Spiders 04 agricultural and veterinary sciences Plants Weed control Plants Genetically Modified Insects Coleoptera Glyphosate Agrochemicals Research Article Herbicide Resistance Crops Agricultural Food Chain Arthropoda Ecological Metrics Weed Control Glycine Crops Biology Crop Animals Arthropods Ecosystem Gossypium Herbicides Ecology and Environmental Sciences lcsh:R Organisms Biology and Life Sciences Fiber Crops Species Diversity Invertebrates 010602 entomology Agronomy chemistry Spain 040103 agronomy & agriculture 0401 agriculture forestry and fisheries lcsh:Q Species richness Weeds Weed Crop Science |
| Zdroj: | PLoS ONE, Vol 13, Iss 1, p e0191408 (2018) Repositorio de Resultados de Investigación del INIA Instituto Nacional de Investigación y Tecnología Agraria y Alimentaria INIA PLoS ONE INIA: Repositorio de Resultados de Investigación del INIA Digital.CSIC. Repositorio Institucional del CSIC instname |
| ISSN: | 1932-6203 |
| Popis: | 18 p.-3 fig.-7 tab. The use of glyphosate, as a post-emergence broad-spectrum herbicide in genetically modified glyphosate-tolerant (GT) cotton, supposes a big change in weed management programs with respect to a conventional regime. Thus, alterations in arable flora and arthropod fauna must be considered when evaluating their potential impacts. A 3-year farm-scale study was conducted in a 2-ha GT cotton crop, in southern Spain, to compare the effects of conventional and glyphosate herbicide regimes on weed abundance and diversity and their consequences for ground-dwelling predators. Surveys reveal that weed density was relatively low within all treatments with a few dominant species, with significantly higher weed densities and modifications of the floristic composition in glyphosate-treated plots that led to an increase in the abundance of Portulaca oleracea and to a reduction in plant diversity. The activity-density of the main predatory arthropod taxa (spiders, ground beetles, rove beetles and earwigs) varied among years, but no significant differences were obtained between conventional and glyphosate herbicide regimes. However, significant differences between treatments were obtained for ground beetles species richness and diversity, being higher under the glyphosate herbicide regime, and a positive correlation with weed density could be established for both parameters. The implications of these findings to weed control in GT cotton are discussed. This work was supported by the Spanish Ministry for Environment, Marine and Rural Affairs (grant AEG 06–038). |
| Databáze: | OpenAIRE |
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