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Effect of insect frass and mycorrhiza on spring wheat yield
Full text linkMagistritöö
Aianduse õppekavalHiljuti legaliseeriti Euroopa Liidus putukate kasvatamine inimtoiduks ja ka söödaks.
Putukate abil valgu tootmine on oluliselt odavam ja keskkonnasäästlikum kui
loomakasvatus, ning muutub lähiajal kindlasti oluliselt suuremaks toidutootmisharuks.
Putukakasvatuse jääkproduktina tekib vaglasõnnik, mis omakorda võib saada väärtuslikuks
ja keskkonnasõbralikuks alternatiiviks mineraalväetistele.
Käesoleva magistritöö eesmärk on uurida vaglasõnniku ja arbuskulaarmükoriisa seente mõju
suvinisu saagikusele ja toitainete omastamisele.
Uurimustöö viidi läbi üheaastase põldkatsena 2021. aastal Eesti Maaülikooli Rõhu
katsejaama Eerika katsepõllul. Katses oli kuus erinevat katsevarianti, vaglasõnnik kahel
erineval väetustasemel, lisatud mükoriisapreparaati, mükoriisa ja vaglasõnnik koos,
mineraalväetistega täisagrotehnoloogia varinat ning kontroll variant, kuhu ei lisatud midagi.
Uuriti erinevate väetusnormide ja mükoriisa mõju suvinisu saagikusele, saagi struktuurile ja
kvaliteedinäitajatele.
Katse tulemusena selgus, et vaglasõnniku lisamine suurendas 1000 seemne massi võrreldes
kontrolliga. Mükoriisa lisamine usutavat erinevust saagi näitajates ei andnud. Kuigi trendina
on selgelt näha, et mükoriisa ja vaglasõnniku koos kasutamine võib anda parimat tulemust.
Katseaasta ilmastiku tingimused olid väga kuumad ja põuased, mis mõjutas tugevalt kogu
katset, ning saagid jäid üldiselt väga väikeseks. See võis olla ka põhjuseks, et mineraalväetist
saanud täisagrotehnoloogia variandil olid paljud näitajad kõige madalamad, kuna
väetisegraanulid ei pruukinud kuivaga lahustuda ja taimed ei saanud toitaineid kätte. Katsest võib järeldada, et vaglasõnniku kasutus, eriti ekstreemsemates ilmastikuoludes võib
olla hea alternatiiv mineraalväetistele. Samas on teada, et orgaanilised väetised lagunevad
aeglasemalt, ning seetõttu on plaanis edaspidi uurida ka vaglasõnnikuga väetamise järelmõju
järgnevale kultuurile.The cultivation of insects for human consumption and also for feed has recently been
legalized in the European Union. Protein production using insects is significantly cheaper
and more environmentally friendly than animal husbandry, and will certainly become a much
larger food industry in the near future. As a by-product of insect farming, insect manure or
frass is produced, which in turn can become a valuable and environmentally friendly
alternative to mineral fertilizers.
The aim of this master 's thesis was to study the effect of insect frass and arbuscular
mycorrhizal fungi on spring wheat yield and nutrient uptake.
The research was carried out as a one-year field experiment in 2021 in the Eerika
experimental field of the Estonian University of Life Sciences. The experiment consisted of
six different experimental variants, frass at two different fertilization levels, addition of
mycorrhiza, mycorrhiza and frass together, a full agro-technological variant with mineral
fertilizers, and a control variant to which nothing was added. The effect of different
fertilization rates and mycorrhiza on spring wheat yield, yield structure and quality indicators
was studied.
The experiment showed that the addition of frass increased the 1000 kernel weight compared
to the control. The addition of mycorrhiza did not give a significant difference in yield.
Although the trend is clear, the combined use of mycorrhiza and insect frass can give the
best results. The weather conditions in the test year were very hot and dry, which strongly
affected the whole experiment, and the yields were generally very low. This may also be the
reason, why the full agro-technological variant with the mineral fertilizer had the lowest effect, as the fertilizer pellets did not dissolve enough and the plants did not receive the
nutrients.
It can be concluded that the use of frass, especially in more extreme weather conditions, can
be a good alternative to mineral fertilizers. At the same time, organic fertilizers are known
to degrade more slowly, and it is therefore planned to further investigate the effects of insect
frass fertilizer application on succeeding crops
Realiseerunud ja potentsiaalse kasvukoha mükoriisaseente mõju mesimuraka kasvule
No full texthttps://www.ester.ee/record=b5743549*es
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Variations on the Author
Full text link“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Full text linkWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
Dispelling the Myths Behind First-author Citation Counts
Full text linkWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
koamabayili/VECTRON-author-checklist: VECTRON author checklist
No full textWe have done our best to complete the author checklist relating to the use of animals in the hut study. Note that the objective for the hut study was to evaluate the IRS treatment applications for residual efficacy against Anopheles mosquitoes, including the local An. coluzzii mosquito population. Cows were only used to attract mosquitoes into the huts and no tests were carried out directly on the cows. The author checklist is intended for use with studies where experiments are carried out on animals, which is why we have had such difficulty in completing this for the hut study, as many of the questions do not relate to how the cows were used
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
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