| Abstract | Istraživanje je provedeno na pokušalištu Poljoprivrednog instituta iz Osijeka 2015. godine. Cilj istraživanja bio je ispitati utjecaj tretmana navodnjavanja (a1-kontrolni tretman, a2-kukuruz je navodnjavan tako da se sadržaj vode u tlu održava na razini od 60-100% PVK i a3-80-100% PVK) na urod i kvalitetu zrna kukuruza (b1 = OSSK596; b2 = OSSK617; b3 = OSSK665; b4 = OSSK552). Navodnjavanje kukuruza obavljeno je metodom kišenja, samohodnim rasprskivačem „Typhon“. Trenutak početka navodnjavanja određen je direktnom metodom elektrometrije. Navodnjavanje je vrlo značajno (p<0,01) povećalo urod zrna kukuruza (a1 = 8,48 t/ha; a3 = 9,42 t/ha), broj zrna na klipu (a1 = 567; a3 = 594), te značajno (p<0,05) masu zrna (a1 = 1030 g; a3 = 1094 g). Hibrid je vrlo značajno (p<0,01) utjecao na urod zrna kukuruza (b2 = 7,61 t/ha; b1 = 9,64 t/ha), apsolutnu masu (b4 = 333; b2 i b3 = 363 g), masu zrna kukuruza (b4 = 994 g; b2 = 1106 g), broj zrna na klipu (b3 = 558; b1 = 602). Interakcija navodnjavanja i hibrida (a x b) značajno je utjecala na broj zrna na klipu (a1b3 = 527; a1b1 = 617). Slaba korelacijska veza pozitivnoga smjera bila je između uroda i broja zrna u redu (r=0,303*), zatim između uroda i mase zrna (r=0,498*), između uroda i randmana (r=0,484*) te između uroda i apsolutne mase zrna (r=0,329*). |
| Abstract (english) | The field research was set up at the trial field of Agricultural institute in Osijek during growing season 2015. The main objective of this research was to study the influence of different irrigation treatment (a1-rainfed, a2- 60-100% field water capacity, FWC and a3-80-100% FWC) and maize hybrids (b1 = OSSK596; b2 = OSSK617; b3 = OSSK665; b4 = OSSK552) on yield and quality of maize grain. The maize crop was irrigated with traveling gun, sprinkler system. Time of irrigation event was determined by direct measuring of soil water content (gypsum block). Irrigation treatment significantly (p<0.01) increased yield of maize grain (a1 = 8.48 t/ha; a3 = 9.42 t/ha), grain number per cob (a1 = 567; a3 = 594), while significantly (p<0.05) grain weight (a1 = 1030 g; a3 = 1094 g). The influence of maize hybrid was significant for yield of maize grain (b2 = 7.61 t/ha; b1 = 9.64 t/ha), 1000 grain weight (b4 = 333; b2 and b3 = 363 g), grain weight (b4 = 994 g; b2 = 1106 g), grain number per cob (b3 = 558; b1 = 602). Irrigation x hybrid (a x b) interaction was significant for grain number per cob (a1b3 = 527; a1b1 = 617). The analysis of interaction showed weak and positive correlation between yield and grain number (r=0.303*); yield and grain weight (0.498*) and between yield and 1000 grain weight (0.329*). |
