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Title:GOSPODARJENJE Z DUŠIKOM S PREZIMNIMA DOSEVKOMA INKARNATKO (Trifolium incarnatum L.) IN MNOGOCVETNO LJULJKO (Lolium multiflorum Lam.) V KOLOBARJU S KORUZO (Zea mays L.) V PRIMERU SUŠE
Authors:Geršak, Dušan (Author)
Gselman, Anastazija (Mentor) More about this mentor... New window
Podvršnik, Miran (Co-mentor)
Files:.pdf VS_Gersak_Dusan_2012.pdf (731,03 KB)
 
Language:Slovenian
Work type:Undergraduate thesis (m5)
Organization:FKBV - Faculty of Agriculture and Life Sciences
Abstract:Od avgusta 2009 do aprila 2010 smo na območju KPD Rogoza (64° 29` 44`` s.g.š. in 15° 40` 19`` v.g.d.) izvedli poljski mikroposkus, kjer smo ugotavljali vpliv prezimnih dosevkov na pridelek, količino mineralnega dušika v tleh, akumulacijo dušika v pridelku (nadzemni del) koruze, poleg tega smo ugotavljali tudi količino navideznega ostanka dušika v tleh po spravilu koruze. Poskus je bil zasnovan po metodi naključnih blokov v štirih ponovitvah. Pridelek v poskus vključenih prezimnih dosevkov (mnogocvetna ljuljka (Lolium multiflorum), inkarnatka (Trifolium incarnatum), inkarnatka 2 (po kateri je bila koruza gnojena s polovičnim odmerkom dušika, 60 kg ha-1) in kontrolo (brez prezimnega dosevka)) smo pred setvijo koruze v celoti zaorali. Analiza dobljenih rezultatov raziskave je pokazala, da se je mnogocvetna ljuljka bolje izkazala pri črpanju mineralnega dušika iz tal kakor inkarnatka, vendar je inkarnatka akumulirala signifikantno več dušika. V primerjavi s kontrolo mnogocvetna ljuljka in inkarnatka nista vplivali na pridelek zrnja koruze. Pri mnogocvetni ljuljki je zaznan manjši negativen vpliv na pridelek sušine in akumulacijo dušika v koruzi. Prezimni dosevki so signifikantno vplivali na navidezni ostanek dušika v tleh. Največ ga je ostalo pod obravnavanjem z inkarnatko, najmanj pa pod kontrolo.
Keywords:prezimni dosevki, koruza, pridelek, mineralni dušik, navidezni ostanek dušika v tleh
Year of publishing:2012
Source:Maribor
NUK URN:URN:SI:UM:DK:84BRCYCQ
Views:1294
Downloads:78
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Categories:FKBV
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Secondary language

Language:English
Title:Management of nitrogen with winter cover crops crimson clover (Trifolium incarnatum L.) and Italian ryegrass (Lolium multiflorum Lam.) in field rotation with maize (Zea mays L.) in case of drought
Abstract:From August 2009 to April 2010 in KPD Rogoza (64° 29` 44`` N, 15° 40` 19`` E) we investigated in field trial the influence of winter cover crops on yield, the amount of mineral nitrogen in the soil and nitrogen accumulation in the biomass (above-ground yield) of maize. We also determined the amount of apparent nitrogen residue in the soil after harvesting the yield of maize. A randomized block design with four replications was applied. The yield of all in the experiment included winter cover crops (Italian ryegrass (Lolium multiflorum), crimson clover (Trifolium incarnatum), crimson clover-2 (after which the maize was fertilized with a half-dose of nitrogen, 60 kg ha-1), and the control (without winter cover crops)) was ploughed-in and maize seeded. The gained results from the experiment indicated that Italian ryegrass proved to be better at absorbing mineral nitrogen from the soil than crimson clover; however, the crimson clover had accumulated significantly more nitrogen. It can therefore be stated that Italian ryegrass and crimson clover haven’t as great effect on the yields of grain maize when compared with the control. Italian ryegrass had a slightly negative effect on the dry matter yield and nitrogen content in the biomass of maize. Furthermore it was discovered that winter cover crops also have a significant influence on the apparent nitrogen residual in the soil. Most of it remained under treatment with crimson clover, and was at least under control.
Keywords:winter cover crop, maize, yield, mineral nitrogen, apparent nitrogen residual in the soil


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