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2018, vol. 24, br. 1, str. 1-9
Rok setve i akumulacija suve materije kod ozimog ječma
aNaučni institut za ratarstvo i povrtarstvo, Novi Sad
bUniverzitet u Novom Sadu, Poljoprivredni fakultet
cUniverzitet u Banjoj Luci, Republika Srpska, BiH

e-adresamilan.mirosavljevic@nsseme.com
Projekat:
Savremeno oplemenjivanje strnih žita za sadašnje i buduće potrebe (MPNTR - 31066)

Ključne reči: biomasa; Hordeum vulgare; logistička kriva; vreme setve
Sažetak
Produkcija biomase je jedan od najboljih pokazatelja uticaja genotipa i faktora sredine na razviće useva. Cilj istraživanja je bio ispitivanje akumulacije suve materije nadzemnog dela biljaka ječma i promene parametara krive u uslovima različitih rokova setve i vegetacionih sezona. Poljski ogled sa ozimim ječmom je izveden tokom dve uzastopne sezone i četiri roka setve. Rezultati ovog istraživanja pokazuju da je akumulacija suve materije u obe sezone ispitivanja pratila tipičan sigmoidni obrazac i bila dobro objašnjena logističkom jednačinom. Rok setve je imao značajan uticaj na posmatrane parametre. Odlaganje setve sa kraja oktobra do prve dekade novembra vodilo je ka značajnom smanjenju maksimalne biomase, trajanja perioda do maksimalne biomase i trajanja eksponencijalnog rasta. U sezoni 2013/14. u zavisnosti od roka setve biomasa je varirala od 12,5 do15,0 g po biljci, dok se naredne sezone kretala između 12,8 i 17,9 g po biljci. Pored toga, pomeranje roka setve dovelo je do značajnog povećanja maksimalne brzine rasta biljaka. Dati rezultati pokazuju da je pored pravilnog odabira sorte, rana setva ozimog ječma neophodna za ostvarivanje visoke akumulacije suve materije koja predstavlja jedan od glavnih preduslova za postizanje visokih prinosa.
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O članku

jezik rada: engleski
vrsta rada: izvorni naučni članak
DOI: 10.5937/SelSem1801001M
objavljen u SCIndeksu: 02.08.2018.
Creative Commons License 4.0

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