A5058784553- Insect-Plant Interactions and Control
- Insect and Pesticide Research
- Insect Resistance and Genetics
- Insect Pest Control Strategies
- Plant and animal studies
- Nitrogen and Sulfur Effects on Brassica
- Insect and Arachnid Ecology and Behavior
- Insect Pheromone Research and Control
- Plant Parasitism and Resistance
- Agronomic Practices and Intercropping Systems
- Banana Cultivation and Research
- Fermentation and Sensory Analysis
- Agricultural Science and Fertilization
- Genomics, phytochemicals, and oxidative stress
- Agriculture, Plant Science, Crop Management
- Crop Yield and Soil Fertility
- Physiological and biochemical adaptations
- Research on scale insects
- Spectroscopy and Chemometric Analyses
- RNA Interference and Gene Delivery
- Allelopathy and phytotoxic interactions
- Pesticide Residue Analysis and Safety
- Weed Control and Herbicide Applications
- Neurobiology and Insect Physiology Research
- Plant Surface Properties and Treatments
Estonian University of Life Sciences
2013-2024
Agricultural landscapes provide resources for arthropod pests as well their natural enemies. To develop integrated pest management (IPM) practices, it is important to understand how spatiotemporal location influences crop colonization and damage severity. We performed a 3-year (2016-2018) field experiment in winter oilseed rape (OSR, Brassica napus) fields Estonia, where half of the were within 500 m previous year's OSR outside this zone. investigated distance from infestation parasitism...
Double-stranded RNAs (dsRNAs) represent a promising class of biosafe insecticidal compounds. We examined the ability to induce RNA interference (RNAi) in pollen beetle Brassicogethes aeneus via anther feeding, and compared short-term (3 d) chronic (17 feeding various concentrations dsRNA targeting αCOP (dsαCOP). In dsαCOP only highest concentration resulted significant reductions B. survival; whereas all three mortality. Chronic also significantly greater mortality equivalent concentrations....
This study investigated how infestation rates of an important oilseed rape pest, the cabbage seed weevil (Ceutorhynchus obstrictus) and parasitization by its parasitoids are affected land use, up to 1000 m from 18 focal fields.The mean proportion C. obstrictus-infested pods per plant was 8% (2-19.5%). Infestation were higher if adjacent habitat a herbaceous semi-natural than it either another crop or woody habitat. positively related area vegetation, permanent grassland wheat (which followed...
Spray-induced gene silencing (SIGS) is a potential strategy for agricultural pest management, whereby nucleotide sequence-specific double-stranded RNA (dsRNA) can be sprayed onto crop; the desired effect being consumption of dsRNA by target pest, and subsequent silencing-induced mortality. Nucleotide sequence-specificity basis dsRNA’s perceived biosafety. A biosafe approach to pollen beetle (Brassicogethes aeneus) management in oilseed rape (Brassica napus) agroecosystems needed. We examined...
Ceutorhynchus obstrictus (Marsham) (Coleoptera: Curculionidae) is a major pest of oilseed rape in Europe and North America. The last decade has seen growing interest the occurrence, importance efficiacy its parasitoids as biocontrol agents. infestation pods by C. larvae their parasitism rates were assessed total nine commercially-grown crops fifteen experimental plots winter 2004–2007. Pod samples collected at pod maturation stage incubated emergence traps. Emerged larvae, exit holes counted...
Abstract The pollen beetle Brassicogethes aeneus is a serious pest of oilseed rape ( Brassica napus ) in Europe. Management this has grown difficult due to B. ’s development resistance pyrethroid insecticides, as well the pressure establish control strategies that minimise impact on nontarget organisms. RNA interference represents nucleotide sequence-based, and thus potentially species-specific, approach agricultural control. present study examined efficacy targeting coatomer gene subunit...
Meligethes aeneus, the pollen beetle, is a major pest of cruciferous oilseed crops in Europe. Two sampling methods for estimating abundance beetle adults on Brassica napus, B. nigra, juncea, Sinapis alba were compared: beating plants over tray and yellow water traps (YWT). The dynamics at different plant growth stages weather conditions was investigated 2010 2011. Abundance significantly greater samples collected by than YWT. Beetle differed with method. Beating caught most beetles during...
Plant essential oils are being increasingly studied as a potential environmentally friendly alternative to synthetic insecticides. The insecticidal efficacy of on the cabbage seedpod weevil ( Ceutorhynchus obstrictus ), an important oilseed rape pest, has not been previously tested. We examined impact six C . via contact with dry residues leaf and flower surfaces. also effect these model non-target parasitoid wasp, Nasonia vitripennis Exposure cumin Cuminum cyminum ) cinnamon Cinnamomum...
The shortage of commercially available and reliable laboratory spraying equipment for testing different preparations can be a major obstacle to achieve field-comparable results in the conditions. RNA interference is natural biological process which, when used plant protection, designed method combining sustainability minimal environmental side effects. Spraying dsRNA field-relevant that should ensure consistency repeatability if conducted laboratory. We built portable spray device use tested...
Abstract Global biodiversity has suffered a decline primarily attributed to landscape simplification and intensified agricultural practices. Agricultural environments, characterized by homogeneity frequent disturbances, are often suboptimal habitats for various insect species. While fields do favour pests, they generally fail provide suitable natural enemies. The inclusion of diverse supporting habitats, such as semi-natural grassy woody field margins etc. surrounding fields, play crucial...
The biosafety aspect of applying double-stranded RNA (dsRNA) in crop pest management is rooted dsRNA's mode action, which displays nucleotide sequence-specificity to a particular region messenger (mRNA), against the insecticidal dsRNA designed. This prominent and promising class insecticides therefore has potential target single species while conferring negligible effect on non-target organisms. Recent studies examining target-specific adults pollen beetle Brassicogethes aeneus , major...