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Vpliv vsebnosti dušika v pšeničnem steblu na njeno mehansko trdnost : diplomska naloga = Effect of nitrogen content in wheat stem on its mechanical stability : graduation thesisPaulin, JanaOzimna pšenica cv. 'balkan' je bila posajena v poljskem poskusu, ki je potekal v Jablah pri Ljubljani od oktobra 1989 do julija 1990. V poskus, katerega zasnova so bili naključni bloki, so bile ... vključeve 3 ravni gnojenja z N: 40 (N1), 180 (N2) in 220 (N3) kg/ha ter 2 gostoti setve: 400 (G1) in 800 (G2) kalivih zrn/m2 v 4 ponovitvah. Velikost osnovne parcelice je bila 10 m2. Vzorčenje rastlin smo opravili v razvojnih fazah EC 45, EC 78/79 in EC 81/82. Dobljene rezultate smo ovrednotili s statistično analizo faktorskega poskusa. Z raziskavo smo želeli ugotoviti vpliv gnojenja z N in gostote setve na vsebnost N v rastlinskih (steblih), maso sušine in mehansko trdnost (lomljivost) pšeničnih bili. Vsebnost N (%) v rastlinah je bila odvisna od gnojenja z N: večji ko je bil odmerek N gnojil, večja je bila vsebnost N v rastlinah. Enako velja tudi za količino N v sušini. Gnojenje z N in gostota setve sta statistično značilno vplivala na lomljivost in debelino bili ter kvocient lom/deb. V povprečju so bila stebla najbolj trdna pri srednji vsebnosti N (varianta N2G1). Bil z večjo debelino je preneslo večjo silo lomljenja. Omenjeni kvocienti so bili v največji v razvojni fazi EC 78/79, kar nakazuje, da so bile rastline v tej razvojni fazi najbolj trdne, kljub temu da so vsebovale več N v bilih v zgodnejši (EC 45) in kasnejši (EC 81/82) razvojni fazi. Ugotovili smo pozitiven vpliv večjega odmerka N gnojil in gostejše setve na povečanje mase sušine ter pridelek zrnja.Type of material - undergraduate thesis ; adult, seriousPublication and manufacture - Ljubljana : [J. Paulin], 1991Language - slovenianCOBISS.SI-ID - 1962105
Author
Paulin, Jana
Other authors
Tajnšek, Anton |
Leskošek, Mirko, 1923-2007
Topics
žita |
ozimna pšenica |
kemične analize |
vsebnost dušika |
steblo |
gostota setve |
mehanska trdnost |
mehanska trdnost
Library/institution |
City | Acronym | For loan | Other holdings |
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BF, Department of Agronomy, Ljubljana | Ljubljana | BFAGR |
outside loan 1 cop.
reading room 1 cop. |
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JCR | SNIP | JCR | SNIP | JCR | SNIP | JCR | SNIP |
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Database name | Field | Year |
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Links to authors' personal bibliographies | Links to information on researchers in the SICRIS system |
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Tajnšek, Anton | 01447 |
Leskošek, Mirko, 1923-2007 | 00327 |
Source: Personal bibliographies
and: SICRIS
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