Dinamika mineralnih oblik dušika (N- min) glede na različne načine oskrbe tal v ekološkem pridelovanju zelja : diplomsko delo

Fras, Leon

| | SLO | ENG | Cookies and privacy

Bigger font | Smaller font

First page > Show document

Show document

Title:	Dinamika mineralnih oblik dušika (N- min) glede na različne načine oskrbe tal v ekološkem pridelovanju zelja : diplomsko delo
Authors:	ID Fras, Leon (Author) ID Bavec, Martina (Mentor) More about this mentor... ID Robačer, Martina (Comentor)
Files:	VS_Fras_Leon_2022.pdf (1,44 MB) MD5: 13419AEB42C5CA13B5A865E329B03E8B PID: 20.500.12556/dkum/6085a2c6-3111-4471-9dfb-26d57c81aa20
Language:	Slovenian
Work type:	Bachelor thesis/paper
Typology:	2.11 - Undergraduate Thesis
Organization:	FKBV - Faculty of Agriculture and Life Sciences
Abstract:	Konvencionalno 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.
Keywords:	zelje, dušik, N-min, ekološko kmetijstvo, obdelava tal
Place of publishing:	Maribor
Place of performance:	Maribor
Publisher:	[L. Fras]
Year of publishing:	2022
Number of pages:	XII, 45, [1] f. pril.
PID:	20.500.12556/DKUM-81291
UDC:	635.34:546.17:631.147:631.51.021(043.2)=163.6
COBISS.SI-ID:	98998531
Publication date in DKUM:	28.02.2022
Views:	880
Downloads:	63
Metadata:
Categories:	FKBV
:	Copy citation

Average score:	(0 votes)
Your score:	Voting is allowed only for logged in users.
Share:

Hover the mouse pointer over a document title to show the abstract or click on the title to get all document metadata.

Licences

License:	CC BY-NC-ND 4.0, Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International

Link:	http://creativecommons.org/licenses/by-nc-nd/4.0/
Description:	The most restrictive Creative Commons license. This only allows people to download and share the work for no commercial gain and for no other purposes.
Licensing start date:	15.02.2022

Secondary language

Language:	English
Title:	Soil Nmin Dynsmics Influenced by Soil Management in Organic Cabbage Production
Abstract:	Conventional vegetable production takes place at high nitrogen intakes and often places a burden on the environment. In organic production, nitrogen input is limited, the dynamics of release from the soil depends on weather conditions, which limits the height of the crop. The field experiment monitored the dynamics of mineral nitrogen (N-min) in nitrate and ammonia form before transplanting cabbage in spring 2016, during the growing season, autumn after harvest and the following spring 2017 in different soil care methods: cover crops (incarnate and winter barley ) rolled with a plant cover roller, shallow plowed cover crops, control without cover crops and without foil, and control with foil. N-min samples were taken from three depths up to 0.9 m. The results of the analyzes showed that before planting cabbage, most of the nitrogen was available on the plots where the incarnate grew and was cultivated. Also, in the growing season, the highest values of N-min were on plots with incarnate, but there were no statistically significant differences between plowed and rolled. This was followed by plots where barley was grown, which was plowed. On average, all treatments in the autumn had statistically significantly higher N-min values after plowing compared to the rolling of cover crops (43.6 and 29.3 kg/ha, respectively). Over the winter, in most cases, the amount of N-min decreased. In the spring of the following year, the highest value of N-min was on plots where barley was grown, which was plowed. Cover crops positively affect the amount of available nitrogen in the soil and had more minor losses over the winter, where they were lowest on rolled plots with cover crops.
Keywords:	cabbage, nitrogen, N-min, organic farming, soil treatment

Comments

Leave comment

You must log in to leave a comment.

Comments (0)

0 - 0 / 0

There are no comments!

Back