EMU DSpace
Digitaalarhiiv EMU DSpace kogub, säilitab ja loob ligipääsu Eesti Maaülikooli liikmeskonna poolt loodud või Eesti Maaülikooli vastutusvaldkondadega seotud teadustöödele toetamaks maaülikooli konkurentsivõimet ja teadmistepõhist ühiskonna arengut. Digitaalarhiivi haldab Eesti Maaülikooli raamatukogu.
Valdkonnad DSpace's
Valige valdkond, et selle kogusid sirvida.
- Institute of Forestry and Engineering (MII)
- Institute of Agricultural and Environmental Sciences (PKI)
- Institute of Veterinary Medicine and Animal Sciences (VLI)
- Publications
- Units
Hiljutised sisestused
Antifungal effect of essential oils against phytopathogens: Global overview and structure of action mechanisms
(Estonian University of Life Sciences, 2026) Manguana, G.D.; Araújo, M.H.C.; Martínez, M.H.P.; Manhique, L.L.; Souza, M.C.; Mainato, M.A.B.; Silva, E.C.; Silva, H.F.; Domingues, P.; Nascimento, L.C.
The increasing resistance to synthetic fungicides and the demand for sustainable agricultural practices have bolstered interest in essential oils (EOs) as antifungal alternatives. However, the lack of an integrated view regarding the evolution and conceptual foci of this field limits strategic advancement. This study maps global research on the mechanisms of action of EOs against phytopathogenic fungi, aiming to guide future investigations towards the development of safe biopesticides. A systematic and bibliometric analysis of 73 documents (2005–2025) from the Web of Science and Scopus databases was conducted. The approach integrated Lotka’s, Bradford’s, and Zipf’s laws, alongside conceptual mapping across four central dimensions: scientific growth, authorship structure, editorial organisation, and conceptual pillars. The results indicate that the field is in a phase of accelerated scientific emergence, characterised by a 14.5% annual growth rate and high citation impact per document. Authorship analysis revealed a strong concentration of specialists, indicating a high degree of specialisation; similarly, the editorial structure proved consolidated within specific journals. Although the term “antifungal activity” predominates, emerging strategic niches were identified, particularly those related to the generation of reactive oxygen species (ROS) and biophysical interactions with the cell membrane. International collaboration was observed to be the primary predictor of scientific impact. It is concluded that essential oil (EO) research is at an inflection point, requiring a transition from predominantly phenotypic approaches to in-depth molecular and mechanistic investigations. Diversifying collaboration networks and investing in emerging conceptual niches are essential to consolidating EOs as viable tools for plant protection.
Lab Handbook : Basics to work with extracellular vesicles : 21st-23rd of May, 2024
(Estonian University of Life Sciences, 2024) Mousavi, Seyed Omid Reza (editor); Premathilaka, Chanaka (editor); Ekanayake, Gayandi (editor); Sapugahawatte, Dulmini N. (editor); Kodithuwakku, Suranga (editor); Fazeli, Alireza (editor)
About COMBIVET & OH-Boost Joint Research School 2024. This collaborative research school is a dynamic partnership between the Combivet ERA Chair of Comparative Medicine at the Institute of Veterinary Medicine and Animal Sciences of the Estonian University of Life Sciences, and the OH-Boost project. It is a collective effort involving four esteemed institutions, the Estonian University of Life Sciences (EMU), Tartu University (UT), University of Helsinki (UH), and the University of Milan (UniMi). The research school is funded by the European Union's Horizon 2020 research and innovation program, under grant agreement No 857418, and Horizon Coordination and Support Actions under grant agreement NO 101079349 respectively. Throughout this exclusive research school, students will engage in hands-
on training, mastering the essentials of extracellular vesicle (EV) isolation, characterization, and associated data analysis. Participants will be guided throughout the program by experienced instructors in the EV field The curriculum includes a diverse collection of lectures, covering vital theoretical foundations, optimal methodologies, practical tips, troubleshooting strategies, and steadfast adherence to quality benchmarks set by the International Society for Extracellular Vesicles (ISEV). Furthermore, the program explores cutting-edge advancements, including scalable EV production and crucial techniques such as size exclusion chromatography, tangential flow filtration, nanoparticle tracking analysis, Advanced microscopy for EVs, and EV RNA extraction and characterization. This research school is designed to meet the needs of researchers focused on extracellular vesicles (EVs), especially for those looking to build solid foundational knowledge to begin their exploration of the EV research field.
Composting process parameters of different types of manure in a bioreactor
(Estonian University of Life Sciences, 2026) Bojarski, W.; Czekała, W.; Nowak, M.; Kupryaniuk, K.; Machaieie, L.
Composting has been practiced since ancient times, where it was used to enhance soil fertility and support crop production. It is therefore regarded as the oldest known method of biowaste treatment. Over time, the process has been systematically optimized through studies on the dynamics of aerobic biodegradation of various organic substrates, making it one of the most extensively investigated biological treatment technologies. Despite this long history, composting remains an important research topic, particularly in the context of circular economy strategies and sustainable development objectives. The aim of this study was to evaluate the composting dynamics of manure-based substrates differing in manure type, moisture content, and structural properties under controlled aerobic conditions. Experiments were conducted at the Ecotechnology Laboratory of the Poznań University of Life Sciences using four isothermal bioreactors (125 dm³ each) designed for controlled aerobic degradation. The tested materials included cattle manure (≈70% moisture), pig manure (> 80%), a mixture of cattle and pig manure (≈65%), and cattle manure (> 80%). During the process, O2 and CO2 concentrations, temperature, pH, bulk density, and mass loss were monitored, and dry matter, organic dry matter, organic carbon, and ash content were determined. The results showed clear differences in composting dynamics depending on manure type and moisture content. The cattle manure (70% moisture) exhibited rapid heating and a stable thermophilic phase, whereas highly moist pig manure showed slower temperature increase and lower intensity. The manure mixture demonstrated the highest microbiological activity, while excessive moisture in cattle manure (> 80%) reduced process efficiency. These findings confirm that manure type and moisture are key determinants of composting performance.
Integrated application of microbial inoculant and biostimulants enhances pea bioproductivity in semi-arid conditions of the Steppe zone
(Estonian University of Life Sciences, 2026) Kolesnikov, M.; Pashchenko, Yu.; Tymoshchuk, T.; Plotnytska, N.; Hrytsiuk, N.; Nevmerzhytska, O.
Pea crops are unable to realize their genetic potential, and yields are reduced due to unfavourable abiotic factors inherent in the semi-arid zone. The research aimed to determine the separate and integrated effects of biostimulants and microbial inoculant on the formation of root nodules, assimilation apparatus, and yield of pea of the Devyz variety in the semi-arid conditions of the Steppe of Ukraine. The biostimulants Stimpo (St), Regoplant (Rp), and microbial inoculant Rhyzohumin (Rhh) were used for pre-sowing treatment, and then biostimulants foliar treatment of pea crops was applied in the budding phase at concentrations described in the methodology. It was found that under the combined use of biostimulants with inoculant, the number of nodules and their weight increased by 33–40% and 9–17% respectively, compared with variants where preparations were used separately. The studied preparations increased the leaf area index of pea crops by up to 1.5 times (BBCH 12–17) and 1.6 times (BBCH 51–79). The combined use of Rhh+St and Rhh+Rp allowed the formation of a larger leaf surface area of pea crops. In the case of the integrated effect of Rhh+St and Rhh+Rp, the net productivity of photosynthesis of pea exceeded the indicator of the variants with separate application of the preparations on BBCH 61–79. Improvement of crop structural elements increased pea yield by 3.0%, 4.5%, 7.9%, 17.9%, and 13.9% compared with the control when using Rhh, St, Rp, Rhh+St, and Rhh+Rp, respectively. The obtained data indicate the presence of a combined interaction between biostimulants and microbial inoculant.
Cabbage seedpod weevil (Ceutorhynchus obstrictus) susceptibility monitoring in Estonia
(Estonian University of Life Sciences, 2026) Kann, Liina; Mäe, Andres
The present study provides insight into the dynamics of pyrethroid susceptibility in cabbage seedpod weevil (Ceutorhynchus obstrictus) populations in commercial winter oilseed rape fields in Estonia during 2021−2023 and 2025. Bioassays followed the IRAC method No. 031 and included four pyrethroid active ingredients: lambda-cyhalothrin, deltamethrin, gamma-cyhalothrin, and tau-fluvalinate. Mortality to lambda-cyhalothrin and deltamethrin remained 100% across all study years, indicating stable susceptibility. Gamma-cyhalothrin also provided complete mortality in nearly all populations, although one population showed reduced sensitivity. In contrast, tau-fluvalinate showed a pronounced and progressive decline in efficacy. Tau-fluvalinate LD50 values increased from 0.96 g a.i. ha-1 in 2021 to 3.84 g a.i. ha-1 in 2025, corresponding to a four-fold reduction in susceptibility. The rise in LD90 was even more pronounced, increasing from 1.73 g a.i. ha-1 in 2021 to 25.7 g a.i. ha-1 in 2025, indicating that substantially higher concentrations are required to achieve efficient pest management in the field. These results provide clear evidence of emerging resistance to tau-fluvalinate in cabbage seedpod weevil populations, while other pyrethroids remain fully effective. The results highlight the need for continued resistance monitoring and careful selection of insecticides with different modes of action to maintain effective control of cabbage seedpod weevils in the field.