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Title:Bilanca dušika različno gnojenega štirikosnega travnika
Authors:Pušnik Medved, Špela (Author)
Kramberger, Branko (Mentor) More about this mentor... New window
Files:.pdf UNI_Pusnik_Medved_Spela_2011.pdf (1,50 MB)
 
Language:Slovenian
Work type:Undergraduate thesis (m5)
Organization:FKBV - Faculty of Agriculture and Life Sciences
Abstract:Na kmetiji Vrecl v Zgornjih Hočah (325 m n.v., 46° 29' 31'' s.g.š., 15° 37' 13'' v.g.d.) smo v letu 2008 ugotavljali bilanco dušika različno gnojenega štirikosnega travnika. V travniškem poskusu (naključni bloki v štirih ponovitvah) smo štirikosni travnik gnojili z gnojevko količine od dveh in pol glav velike živine (2,5 GVŽ) ha-1, dodali pa smo tudi 48 kg P2O5 ha-1 (gnojilo hiperkorn). V obravnavanju 2 smo uporabili gnojevko manjše količine od (1,9 GVŽ) ha-1 in 41 kg P2O5 ha-1 ter v obravnavanju 3 smo uporabili mineralna gnojila NPK in KAN (170 kg N, 120 kg P2O5, 240 kg K2O). Pridobljeni rezultati kažejo, da smo v bilanci dušika z vsemi tremi obravnavanji gnojenja s pridelkom odnesli iz tal več dušika, kot smo ga dodali z gnojenjem. Analize skupnih zalog in mineralnega dušika v tleh kažejo, da nekaj dušika v odvzemu s pridelkom izvira iz zalog dušika v tleh, nekaj dušika v pridelku izvedenega poskusa pa lahko pripišemo tudi drugim virom (simbiotska vezava dušika iz zraka, vnos dušika v tla s padavinami).
Keywords:bilanca, dušik, gnojenje, štirikosni travnik
Year of publishing:2011
Source:Maribor
NUK URN:URN:SI:UM:DK:HHKWLQJ2
Views:1712
Downloads:207
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Categories:FKBV
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Secondary language

Language:English
Title:The nitrogen balance of differently fertilized grassland cut four times per year
Abstract:On the Vrecl farm in Zgornje Hoče (325 m a.s.l., 46° 29' 31'' N, 15° 37' 13" L) we studied the nitrogen balance of differently fertilized grassland cut four times per year (3 treatments) in 2008. In treatment 1 of the experiment (randomized block design with four replications) grassland was fertilized with slurry obtained from 2,5 annimal unit (AU) ha-1 and 48 kg P2O5 ha-1 (hypercornfertilizer). In treatmment 2 the amount of the slurry used was lower, obtained from 1,9 AU ha-1 and 41 kg P2O5 ha-1. And in treatment 3 we added mineral fertilizers NPK and KAN (170 kg N, 120 kg P2O5, 240 kg K2O). The results indicate that in all three treatments more nitrogen was taken from the ground with yield than added with fertilization. The analyses of common supplies and mineral nitrogen in the soil indicate that some nitrogen in the yield can be attributed to some other sources of nitrogen (symbiotic fixation of nitrogen from the ground, the intake of nitrogen to the soil with precipitation).
Keywords:balance, nitrogen, fertilization, four-cut grassland


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