Potato yield and growing profitability depending on the different farming system

Bakalaureusetöö Põllumajandussaaduste tootmise ja turustamise õppekavalAntud uurimustöö eesmärgiks oli välja selgitada, kuidas mahe- või tavaviljelus mõjutavad mugulate saaki 2016. aastal ning kui suurt mõju avaldavad nimetatud viljelusviisid saagi kvaliteedile ja kartuli kasvatamise tasuvusele. Külvikorra katse viidi läbi Eerika põllul Eesti Maaülikoolis. Katses oli 4 tavaviljelussüsteemi ning 3 maheviljelussüsteemi. Neli tavaviljeluse süsteemi erinesid üksteisest lämmastiku normide poolest: N0 (N0P0K0); N1 (N50P25K95); N2 (N100P25K95); N3 (N150P25K95). Maheviljeluse süsteemid olid järgnevad: M0 – maheviljeluse kontrollsüsteem; M1 – maheviljelusesüsteem, kus kasvatati talviseid vahekultuure; M2 – maheviljelusesüsteem, milles kasutati talviseid vahekultuure ning lisaks anti kartulile kevadel ka täielikult komposteerunud allapanuga veisesõnnikut normiga 20 t/ha. Suurima kartulisaagi andis tavaviljeluse variant N3 (58,6 t/ha), kus kasutati võrreldus variantidest kõige suuremat N kogust (150 kg N/ha). Seega, mida rohkem anda kartulile lämmastikväetist, seda suurem on saak. Kõige väiksem nitraatide sisaldus oli kartuli mugulates, mis olid kasvatatud maheviljelus variantides, tavaviljeluse variantides lisades lämmastikväetist nitraatide sisaldus suurenes. Kõige suurem tärklise sisaldus kartuli mugulates oli maheviljeluse variandis M2 (18%). Lämmastikväetise kasutamine vähendas kartuli mugulas tärklise sisaldust. Enim positiivset mõju avaldas kartuli tärklise sisaldusele sõnniku kasutamine ja vahekultuuride kasvatamine. Kartuli kasvatamiseks kõige rohkem kulutusi tehti variandis M2 (4 072,4 €/ha) ning suurimat kasumit teeniti samuti maheviljeluse variandis M2 (17 130,6 €/ha). Suur kasum maheviljeluses oli tingitud 2016. aasta kõrgest mahekartuli müügihinnast.The objective of the given thesis was to explore how organic or conventional farming affect the crop yield of tubers in 2016 and how big of an influence they have on the quality of the crops and the profitability of potato growing. Crop rotation study took place in Eerika field at Estonian University of Life Science. The experiment was performed with four conventional and three organic farming systems. Four conventional farming systems were differed from each other in the amounts of fertilizers which used as follows: N0 (N0P0K0); N1 (N50P25K95); N2 (N100P25K95); N3 (N150P25K95). Three organic farming systems were as follows: Organic M0 – Organic control system; Organic M1 – were used winter catch crops; Organic M3 – were used catch crops and also fully composted cattle manure (20 t/ha) was added as a fertilizer. The biggest crop yields came from conventional farming (58,6 t/ha), where the larger amounts of fertilizer were used (150 kg N/ha) comparated to the ohter treatments. Thus, the more nitrogen fertilizer is used on potatoes, the larger the crop yields. Potato tubers from organic farming systems have a smaller amount of mitrates. In conventional farming systems the amount of nitrates in tuber increased with the added nitrogen amount. The largest amount of starch in potato tubers was in the M2. Using nitrogen fertilizer decreases the amount of starch in potato tubers. The most positive influence on potato starch content was caused by the manure and catch crops. The biggest expenses for growing potatoes were made in the M2 version (4 072,4 €/ha) and the largest profit was also made in the M2 version (17 130,6 €/ha). A big profit came from organic farming systems because in September 2016, the sale price of organic potatoes was high

Fundamentaalanalüüsil põhinev pikaajaline väärtusinvesteerimine langevatel aktsiaturgudel Kesk-ja Ida-Euroopa näitel

http://tartu.ester.ee/record=b2607654~S1*es

Platsenta alternatiivne splaissing normaalses ja preeklamptilises raseduses

Alternatiivne splaissing on protsess, kus ühelt geenilt kodeeritakse erinevaid transkripte, säilitades või eemaldades mRNA-st valikuliselt eksoneid või introneid, kas täielikult või osaliselt. Praeguseni on alternatiivset splaissingut platsentas vähe uuritud, aga arusaam sellest on tähtis, sest vead splaissimises võivad põhjustada haigusi, näiteks preeklampsiat või gestatsioonidiabeeti. Käesolevas töös uuriti platsentasid, mis tulenesid üksikrasedustest, milles esines preeklampsiat ja ilma komplikatsioonideta rasedustest. Töö eesmärkideks oli tuvastada platsentas erinevate transkriptide kasutust ADAM12, AZIN1 ja FN1 geenides ja replitseerida alternatiivse splaissimise mustri muutuseid preeklampsias

Fair Trade and social responsibility – whose duty? Estonian consumers’ attitudes and beliefs

ArticleThis article investigates how the Estonian consumers endorse the idea of Fair Trade (FT) and understand the principles of social responsibility. The article is based on a study on Fair Trade and social responsibility conducted in 2014. The study examined the consumers’ attitudes and beliefs associated with FT and local Estonian agricultural production. The article aims to compare if there are any difference in the beliefs and attitudes among the Estonian consumers towards supporting local farmers and producers versus supporting the FT ideas which benefit the farmers and producers from the Global South. The authors fully recognise that there is no competition among these two groups per se, but the perception exists in the minds of the consumers. The respondents of the nation-wide representative sample (n = 1,007) evaluated the responsibility of different economic agents such as public sector, retailers, suppliers, producers, and consumers. Most of the respondents regarded the principle of social responsibility as giving the priority to local Estonian agricultural production. The Estonian consumers tend to be sceptical about the benefits of FT or the workers and farmers from the developing countries. The awareness and knowledge about FT ideas is not high

Appearance-based discrimination at workplace: a case study in Estonia : International Rainbow Conference 8.-9.2.2022

Non peer reviewe

Sultones and Sultines via a Julia-Kocienski Reaction of Epoxides

We thank the EPSRC/Syngenta for a CASE Ph.D. Studentship (to G.M.T.S. under grant EP/J50029X/1), the EPSRC UK National Mass Spectrometry Facility at Swansea University and the EPSRC UK National Crystallography Service Facility at Southampton University.37 We are indebted to Andrew Plant and Janice Black (Syngenta) for the initial suggestion of using the combination of LiN(SiMe3)2/CH2Cl2 and Matthew Reid (Syngenta) for NMR assistance

Assessing engineering students’ attitudes towards corporate social responsibility principles

Ethical and sustainable thinking is an important competence in the engineering education to support students’ abilities to act and perform in a responsible manner in corporate contexts, and consequently contribute to a sustainable future. This paper investigates engineering students’ attitudes towards ethical and sustainable thinking focusing on the corporate social responsibility (CSR) principles in the context of entrepreneurship courses as a part of larger research project. Engineering students from a Finnish and an Estonian university (N = 342) responded to a self-assessment survey. The students’ attitudes towards CSR principles were assessed both on the enterprise level and the individual level as expectations of potential future employees. The findings indicate that engineering students acknowledge the need to take into account responsible thinking and that it is important for enterprises to be both socially and environmentally responsible in their activities. The self-assessment tool of ethical and sustainable thinking associated with the entrepreneurship competence model and CSR principles can be helpful in practice when university teachers wish to support and assess their students’ attitudes towards CSR principles among other entrepreneurship competencies when creating new course content.Peer reviewe