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Vpliv tal in foliarnega gnojenja s kalcijem na njegovo sezonsko dinamiko in na kakovost plodov jablane (Malus domestica) 'Jonagold' = The Impact of soil and foliar spraying with calcium on its seasonal dynamics and on quality of apple fruits (Malus domestica) 'Jonagold' : magistrsko deloMuršec, MatejaV dvoletnem poskusu smo na lokaciji Ivanjkovci pri Ormožu ugotavljali vpliv tal in različnih kalcijevih foliarnih gnojil (Kalgan, Caltrac in Calciogreen) na kakovost plodov jablane 'Jonagold' in na ... sezonski potek akumuliranja kalcija v plodovih. Za parametre kakovosti smo izbrali vsebnost kalcija v enoti suhe snovi in sveže snovi plodov, količino kalcija v posameznih plodovih, ustrezna razmerja med kalijem, kalcijem in magnezijem v plodovih (Ca/Mg, (K+Mg)/CA, K/Ca), trdoto, premer in maso plodov. Tla so bila močno kisla (4,57 v KCl) z majhnim deležem izmenljivega Ca (30 % KIK) in z velikim deležem Mg (11,5 %) in kislo delujočih kationov (56 % KIK) na sorptivnem delu tal in niso bistveno vplivala na prehrano plodov s kalcijem. Vremenske razmereza sprejem kalcija v času razvoja plodov so bile v obeh sezonah dokaj ugodne, saj ni bilo izrazitega sušnega obdobja. Aplicirani pripravki niso imeli učinka na vsebnost kalcija v plodovih (razen pozitivnega učinka Calciogreena v letu 1997). Pozitivni učinek kalcijevih pripravkov je bil izrazit pri razmerjih med MG, K in Ca v plodovih, kjer so kontrolni plodovi kazali najslabše skladiščne sposobnosti. Aplicirani pripravki niso imeli vpliva na trdoto plodov. Kalcij se je nalagal v plodove enakomerno do zorenja skozi vso rastno dobo (kar je v veliki meri odvisno od vremenskih razmer v poznem poletju), medtem ko je njegova vsebnost v enoti suhe in sveže snovi upadala. Ugotovili smo nizko stopnjo korelacije med tlemi in plodovi glede mineralne sestave (Ca, Mg in K), kar dokazuje kompleksnost razmerja med tlemi in drevesom. Nizko stopnjo korelacije smo ugotovili tudi med parametri kakovosti plodov (vsebnost Ca, Mg, in K v plodu, trdota plodov). Naši rezultati so pokazali, da tla kljub neugodnim lastnostim niso bistveno vplivala na vsebnost kalcija v plodovih.Type of material - master's thesisPublication and manufacture - Ljubljana : [M. Muršec], 2001Language - slovenianCOBISS.SI-ID - 1819948
Author
Muršec, Mateja
Other authors
Lobnik, Franc, 1942- |
Štampar, Franci
Topics
kalcij |
jablane |
Malus domestica |
tla |
kakovost plodov
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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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Muršec, Mateja | 17007 |
Lobnik, Franc, 1942- | 00952 |
Štampar, Franci | 06404 |
Source: Personal bibliographies
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