Dynamics of canopy-dwelling arthropods under different weed management options, including glyphosate, in conventional and genetically modified insect-resistant maize

Autor: Ismael Sánchez-Ramos, Iñigo Loureiro, María-Concepción Escorial, Esteban García-Ruiz, María-Cristina Chueca, G. Cobos, Manuel González-Núñez, Susana Pascual, Inés Santín-Montanyá
Přispěvatelé: European Commission, García-Ruiz, Esteban, Cobos, Guillermo, Sánchez-Ramos, Ismael, Pascual, Susana, Chueca, María-Cristina, Santín-Montanyá, Inés, Loureiro, Íñigo, González-Núñez, Manuel
Rok vydání: 2020
Předmět:
0106 biological sciences
0301 basic medicine
Canopy
Crops
Agricultural
Bt maize
Glyphosate
Canopy-dwelling arthropods
GMHT maize
Fauna
Weed Control
Population Dynamics
Glycine
Plant Weeds
Genetically modified insect
01 natural sciences
Zea mays
General Biochemistry
Genetics and Molecular Biology
Crop
Hemiptera
03 medical and health sciences
chemistry.chemical_compound
Hemolysin Proteins
Animals
Arthropods
Ecology
Evolution
Behavior and Systematics
Parasitoids
biology
Bacillus thuringiensis Toxins
Herbicide management
Herbicides
Biodiversity
biology.organism_classification
Weed control
Plants
Genetically Modified
Hymenoptera
Genetically modified organism
Endotoxins
010602 entomology
030104 developmental biology
Agronomy
chemistry
Insect Science
Arthropod
Pest Control
Agronomy and Crop Science
Zdroj: Insect scienceReferences. 28(4)
ISSN: 1744-7917
Popis: 18 Pág. Departamento de ​Protección Vegetal (INIA)
The use of genetically modified varieties tolerant to herbicides (HT varieties) and resistant to insects (Bt varieties) in combination with application of a broad-spectrum herbicide such as glyphosate could be an effective option for the simultaneous control of weeds and pests in maize. Nevertheless, the possible impact of these tools on nontarget arthropods still needs to be evaluated. In a field study in central Spain, potential changes in populations of canopy-dwelling arthropods in Bt maize under different weed management options, including glyphosate application, were investigated. Canopy-dwelling arthropods were sampled by visual inspection and yellow sticky traps. The Bt variety had no effect on any group of studied arthropods, except for the expected case of corn borers-the target pests of Bt maize. Regarding the effects of herbicide regimes, the only observed difference was a lower abundance of Cicadellidae and Mymaridae on yellow sticky traps in plots not treated with pre-emergence herbicides. This effect was especially pronounced in a treatment involving two glyphosate applications. The decrease in Cicadellidae and Mymaridae populations was associated with a higher density of weeds in plots, which may have hindered colonization of the crop by leafhoppers. These differences, however, were only significant in the last year of the study. The low likelihood of the use of glyphosate- and herbicide-tolerant varieties for weed control triggering important effects on the nontarget arthropod fauna of the maize canopy is discussed.
This is the publication No. 36 produced within the framework of the project “Assessing and Monitoring the Impacts of Genetically Modified Plants on Agro‐ecosystems (AMIGA),” funded by the European Commission in the Framework Programme 7. THEME [KBBE.2011.3.5‐01].
Databáze: OpenAIRE
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