20.500.12556/DKUM-92661 Pridelek in kakovost koruze (Zea mays L.), pridelane po predhodno posejanem prezimnem dosevku magistrsko delo Yield and quality of maize (Zea mays l.), grown after a previously sown winter cover crop V poljskih poskusih, izvedenih na šestih kmetijah po Sloveniji, smo preučevali vpliv prezimnih dosevkov (inkarnatka (Trifollium incarnatum L.) in mnogocvetna ljuljka (Lolium multiflorum Lam. ssp. Italicum Schniz in Kell.)) na pridelek ter kakovost koruze (Zea mays L.). Prezimni dosevki so bili posejani v dveh rokih (konec avgusta in sredina septembra), nato pomulčeni ter zaorani pred setvijo koruze. Koruza je bila gnojena s polnim (215 kg N ha-1) ali polovičnim odmerkom (107 kg N ha -1) dušika, odvisno od predhodno posejanih dosevkov. Rezultati so pokazali, da je bil najvišji skupni pridelek (cela rastlina in zrnje) dosežen pri koruzi, sejani po inkarnatki, z uporabo polovičnega odmerka dušika. Tudi izmerjeni parametri kakovosti koruze, izraženi s količino surovih beljakovin, surovega pepela, dušika, kalija in fosforja so bili v tem obravnavanju najvišji. Vsebnost dušika, kot najpomembnejšega parametra kakovosti, je bila v tem primeru primerljiva ali celo višja kot pri polnem odmerku dušika iz mineralnih gnojil uporabljenem po mnogocvetni ljuljki. Rezultati potrjujejo, da lahko z inkarnatko kot s prezimnim dosevkom zmanjšamo gnojenje koruze z dušikom iz mineralnih gnojil za polovico, ne da bi pri tem zmanjšali njen pridelek in kakovost. In field trials conducted on six farms in Slovenia, the effects of the winter cover crops crimson clover (Trifollium incarnatum L) and Italian ryegrass (Lolium multiflorum Lam. ssp. Italicum Schniz and Kell) on the yield and quality of maize (Zea mays L) were investigated. The winter cover crops were sown at two dates (end of August and mid–September), mulched in spring and incorporated into the soil before sowing the maize. Depending on the previous winter cover crop treatment, the maize was fertilised with either a full (215 kg N ha-1) or a reduced (107 kg N ha-1) rate of nitrogen. The resulst showed that the highest total yield (total plant biomass and grain) was achieved when the maize was sown after the crimson clover with the reduced nitrogen rate. In this treatment, the measured quality parameters, including crude protein, crude ash, nitrogen, potassium and phosporus content, were also the highest. Nitrogen content was the most important indicator of forage quality and comparable or even higher, than in treatments with the full nitrogen fertilization rate after using Italian rygrass. The results suggest, that use of crimson clover as a winter cover crop can effectively reduce the need for nitrogen fertilisation in maize crops by half, without compromising the yield or the quality. koruza pridelek kakovost prezimni dosevek dušik maize yield quality winter cover crops and nitrogen true true false M. Munda Slovenski jezik Angleški jezik Magistrsko delo/naloga 2025-05-05 16:10:31 2025-06-03 11:54:33 2025-06-04 03:34:45 0000-00-00 00:00:00 2025 0 Maribor 0 Maribor 1 spletni vir (1 datoteka PDF (IX, 60 str.)) 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 633.15:631.524.84:546.17(043)=163.6 238088707 MAG_Munda_Maja_2025.pdf MAG_Munda_Maja_2025.pdf 1 9853B556FD3428D78D840242C5901974 6f89475314e0d1509533db51dbfa8ef9b4aa1168802a7395b248fb34c44a69a2 7cdc7413-29bb-11f0-863f-00155d000105 https://dk.um.si/Dokument.php?lang=slv&id=190645 Fakulteta za kmetijstvo in biosistemske vede 0 0 0