| Abstract | Istraživanje utjecaja tretmana navodnjavanja s različitim sadržajem soli na morfološka svojstva Vinke (Catharanthus roseus L.) provedeno je tijekom razdoblja vegetacije vinke 2020. godine u Orahovici u zaštićenom prostoru (plastenik). Cilj istraživanja bio je proučiti utjecaj tretmana navodnjavanja s različitim sadržajem soli na promatrana svojstva te izgled biljke (cvjetova) jednake sorte i jednake boje kako bi promijene bile jasno vidljive. Vinke su uzgojene iz presadnica koje su nabavljene na lokalnoj tržnici. Presadnice su presađene u PVC posude u kojima je korišten univerzalni supstrat za uzgoj lončanica, komercijalni supstrat marke SUSBSTRAL Terra Osmocote prooizvođača Evergreen Garden Care, Varšava. Pokus je postavljen po slučajnom blok rasporedu u pet ponavljanja. Posude su bile položene u plastične kontejnere za presadnice kako bi svaka posuda dobila jednaku količinu vode za navodnjavanje odnosno obroka navodnjavanja. Posađeno je pet biljaka po tretmanu navodnjavanja, odnosno sveukupno 100 biljaka (5 biljaka x 4 tretmana x 5 ponavljanja). Biljke su navodnjavanje ručno tako da je svaka biljka, odnosno posuda dobila jednaku količinu vode. U istraživanju su korišteni slijedeći tretmani: s0 = kontrolni tretman (voda iz lokalne vodoopskrbne mreže <1dS m–1), s1 = 3dS m–1, s2 = 4,5dS m–1, s3 = 6dS m–1. Rezultati istraživanja pokazala su da je povećana koncentracija soli u vodi za navodnjavanje uzrokovala jednaku visinu biljke, veću duljinu korijena, veći broj grana i bogatiju nadzemnu masu kod koncentracije soli do 3 dS m–1 u odnosnu na vodu iz lokalne vodoopskrbe. Kod koncentracija soli u vodi za navodnjavanje većih od 3 dS m–1 razvoj biljke je bio manji i oštećenja su bila jasno vidljiva te je većina biljaka uginulo prije završetka vegetacije. |
| Abstract (english) | The research was conducted in greenhouse during vinca growing season (Orahovica, 2020). The goal of the research was to study the effect of irrigation with different amount of salts (s0 = control (tap water), s1 = 3 dS m–1, s2 = 4,5 dS m–1, s3 = 6 dS m–1) on following morphological characteristics: plant height (cm), root length (cm), plant fresh weight (g), number of brunches/plant. Vinca was grown from the transplants from the local market. The transplants were transplanted into containers filed with substrate (commercial substrate, SUBSTRAL Terra osmocote by the producer Evergreen Garden Care, Warsaw). The experiment was conducted as completely randomised block design in five replicates. Flower containers were placed on trays, so that each container would get the same amount of irrigation water. Five plants were planted per irrigation treatment, all together 100 plants (5 plants x 4 treatments x 5 replicates). The plants were irrigated by hand so that each plant, container, would receive the same amount of water. According to study results, the s1 irrigation treatment (3 dS m–1) did not significantly affect the plant height, root length and plant fresh weight. The number of brunches/plant was higher for 16% higher than control yet not statistically significant. The higher salt concentrations, above 3 dS m–1, significantly reduced the plant height, root length, number of branches/plant and fresh weight in comparison with the control (s0) and s1 treatment. It is important to emphasize that the higher salt concentration caused damages of plant tissue. |
