July 25, 2018 Thesis Open Access

Fikadu Nega

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{
  "DOI": "10.20372/nadre:12721", 
  "language": "eng", 
  "author": [
    {
      "family": "Fikadu Nega"
    }
  ], 
  "issued": {
    "date-parts": [
      [
        2018, 
        7, 
        25
      ]
    ]
  }, 
  "abstract": "<p>ABSTRACT</p>\n\n<p>The phenomenon of allelopathy, whereby a plant species chemically interferes with the</p>\n\n<p>germination, growth or development of other plant species has been known and documented for</p>\n\n<p>over 2000years.Allelochemicals are plant secondary metabolites normally released into the</p>\n\n<p>environment through volatilization, leaching, root exudation and decomposition of plant residues</p>\n\n<p>in the soil. The study was conducted at Kulumsa Agricultural Research Center to examine the</p>\n\n<p>allelopathic effect of Eucalyptus globulus on seed germination and early growth stages of</p>\n\n<p>highland Teff (Eragrostis tef) and Barley (Hordeum vulgare L.).Fresh leaf, juvenile stems, root</p>\n\n<p>and mixtures of (fresh leaf, juvenile stems, root) aqueous extracts at 0%,5%, 10%, 15%, 25%,</p>\n\n<p>and 50%concentrations were used to run the experiment under Laboratory condition. The</p>\n\n<p>research design used in this study was factorial Complete Randomized Design (CRD) with three</p>\n\n<p>replications. The quantitative data was collected, coded and then subjected to two way ANOVA</p>\n\n<p>analysis of variance procedure with SAS Version 9.1 and the means compared by using least</p>\n\n<p>Significant difference test (LSD) at the 5% level of probability. The allelopathic influence of</p>\n\n<p>aqueous extracts of Eucalyptus globulus on the germination and seedling growth was examined.</p>\n\n<p>It was noted that aqueous extract of fresh leaf at 25% and 50% had inhibitory effect on</p>\n\n<p>germination on Petri dish and root seedling growth of both crop. At 25% of fresh leaf extract</p>\n\n<p>seed germination on Petri dish of teff inhibited at about 36.3% and barely at about 55.5%</p>\n\n<p>inhibited ,while root length of teff and barely inhibited by 69.20%(which is almost the same</p>\n\n<p>effect) under the highest level of concentration(50%)of fresh leaf extract. These finding indicates</p>\n\n<p>that teff and barely seed germination, early seedling growth affected by allelochemials in fresh</p>\n\n<p>leaf compared to other plant parts of Eucalyptus globulus. Therefore it is recommended to stop</p>\n\n<p>Eucalyptus globulus plantation expansion near the land of economically important crop plants of</p>\n\n<p>teff and barely.7</p>", 
  "title": "Allelopathic Effect of Eucalyptus globulus on Seed Germination and Seedling Growth of Highland Teff  (Eragrotis tef)and Barely(Hordeum vulgare L.)", 
  "type": "thesis", 
  "id": "12721"
}