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Dinamika mineralnih oblik dušika (N- min) glede na različne načine oskrbe tal v ekološkem pridelovanju zelja : diplomsko deloFras, LeonKonvencionalno pridelovanje zelenjave poteka ob velikih vnosih dušika in pogosto pomeni obremenitev za okolje. V ekološki pridelavi je vnos dušika omejen, dinamika sproščanja iz tal je odvisna od ... vremenskih razmer, kar limitira višino pridelka. V poljskem poskusu je bila spremljana dinamika mineralnega dušika (N-min) v nitratni in amonijski obliki pred presajanjem zelja spomladi 2016, v času rastne dobe, jeseni po spravilu in naslednjo pomlad 2017 pri različnih načinih oskrbe tal: prekrivni posevki (inkarnatka in ozimni ječmen) povaljani z valjarjem rastlinske odeje, plitvo zaorani prekrivni posevki, kontrola brez prekrivnih posevkov in brez folije ter kontrola s folijo. N-min vzorci so bili odvzeti po slojih iz globin 0,3m, 0,6m, in 0,9 m. Rezultati analiz so pokazali, da je bilo pred sajenjem zelja največ dostopnega dušika na parcelah, kjer je rastla inkarnatka in je bila zaorana. Tudi v rastni sezoni so bile najvišje vrednosti N-min na parcelah z inkarnatko, vendar med zaorano in povaljano ni bilo statistično značilnih razlik. Sledile so parcele, kjer je rasel ječmen, ki je bil zaoran. V povprečju vseh obravnavanj so bile jeseni statistično značilno višje vrednosti N-min po oranju v primerjavi z valjanjem prekrivnih posevkov (43,6 oz. 29,3 kg/ha). Preko zime se je v večini primerov količina N-min zmanjšala. Spomladi naslednje leto je bila najvišja vrednost N-min na parcelah, kjer je rasel ječmen, ki je bil zaoran. Prekrivni posevki pozitivno vplivajo na količino dostopnega dušika v tleh in na manjše izgube le-tega preko zime, kjer so bile najnižje prav na povaljanih parcelah s prekrivnimi posevki.Type of material - undergraduate thesis ; adult, seriousPublication and manufacture - Maribor : [L. Fras], 2022Language - slovenianCOBISS.SI-ID - 98998531
Author
Fras, Leon
Other authors
Bavec, Martina |
Robačer, Martina
Topics
Zelenjadarstvo |
Univerzitetna in visokošolska dela |
zelje |
dušik |
N-min |
ekološko kmetijstvo |
obdelava tal |
cabbage |
nitrogen |
N-min |
organic farming |
soil treatment
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Library | Call number – location, accession no. ... | Copy status |
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Faculty of Agriculture and Life Sciences, Maribor | Čitalnica d 635 FRAS, L. Dinamika IN: 12022025 |
available - reading room |
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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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Fras, Leon | ![]() |
Bavec, Martina | 10142 |
Robačer, Martina | 22226 |
Source: Personal bibliographies
and: SICRIS
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