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3 research outcomes, page 1 of 1
  • publication . Article . Other literature type . 2006
    Open Access Bulgarian
    Authors:
    TONI TOMOV; NEDIALKA ARTINOVA;
    Publisher: University of Zagreb, Faculty of Agriculture

    The effect of system mineral and organic-mineral fertilization on the humus content and humus fractions in mollic fluvisols in condition of long-term fi eld experiment was studied. Forty years period of organic-mineral fertilization (N420P260K380 + 27 t/dka manure) have...

  • publication . Article . 2019
    Open Access Bulgarian
    Authors:
    Todorova-Lazarova, Valentina;
    Persistent Identifiers
    Publisher: Institute of Mathematics and Informatics Bulgarian Academy of Sciences, Association for the Development of the Information Society

    Association for the Development of the Information Society, Institute of Mathematics and Informatics Bulgarian Academy of Sciences, Plovdiv University "Paisii Hilendarski" This article giving a reason the need for STEM education for children aged 4 to 16 years. An oppor...

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  • publication . Article . 2020
    Open Access Bulgarian
    Authors:
    Varbanova-Dencheva, Kristina; Dencheva, Radostina;
    Persistent Identifiers
    Publisher: Institute of Mathematics and Informatics Bulgarian Academy of Sciences, Association for the Development of the Information Society

    Report published in the Proceedings of the National Conference on "Education and Research in the Information Society", Plovdiv, November, 2020 The report briefly presents the history of the conclusion of the Craiova Agreement between Bulgaria and Romania 80 years ago, i...

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3 research outcomes, page 1 of 1