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13.
Ekonomski učinek gnojenja z dušikom in namakanja na pridelek zelja (Brassica oleracea var. capitata) : diplomska naloga = Economical effect of fertilization with nitrogen and irrigation on the crop cabbage ( Brassica oleracea var. capitata) : graduation thesis
Železnik, Gabrijela
Vpliv namakanja in gnojenja z dušikom na pridelek zelja je bil opazovan v poskusu na Agrohidrološki postaji Katedre za melioracije in urejanje kmetijskega prostora v letu 1987. V poskus je bilo ...vključenih 6 ravni zalivanja (72, 121, 166, 220, 280, 324 mm vode/rastno dobo) in 4 ravni gnojenja (0, 130, 260, 390 kg N/ha), v 3 ponovitvah. Opazovane so bile rastline zelja kultivar "RAPID F1", posajene 72 lizimetrov. Statistične analize so pokazale, da je količina pridelka odvisna predvsem od namakanja, medtem ko gnojenje z dušikom in interakcija med zalivanjem in gnojenjem z dušikom nista statistično značilna. To statistično trditev so potrdile proizvodne funkcije. Iz analize stroškov je razvidno, da na optimalen pridelek najbolj vpliva sprememba cene pridelka, manj pa sprememba cene inputov. Kalkulacija pri optimalnemu vlaganju in optimalnemu pridelku daje pozitiven finančni rezultat.
Type of material - undergraduate thesis
; adult, serious
Publication and manufacture - Ljubljana : [G. Železnik], 1996
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