Utjecaj biostimulatora na sastavnice prinosa krastavca u hidroponskom uzgoju

master's thesis

• Title (english): Effect of biostimulants on cucumber yield components in hydroponics
• Author: Mislav Đurić
• Mentor: Božidar Benko (mentor)
• Committee member: Božidar Benko (predsjednik povjerenstva)
• Committee member: Boris Lazarević (član povjerenstva)
• Committee member: Sanja Radman (član povjerenstva)
• Granter: University of Zagreb; Faculty of Agriculture; (Vegetable Crops); Zagreb
• Defense date and country: 2019-02-15, Croatia
• Scientific / art field, discipline and subdiscipline: BIOTECHNICAL SCIENCES; Agronomy

Abstract

Kako se uzgoj presadnica krastavca odvija u grijanim zaštićenim prostorima, moguća je kontrola abiotskih čimbenika (temperatura, vlaga…). Međutim, prilikom sadnje u negrijane plastenike dolazi do trenutnog abiotskog stresa i privremenog zastoja rasta biljke. Istraživanjima je utvrđeno da primjena biostimulatora utječe na poboljšanje asimilacije, uporabu i translokaciju hranjivih tvari, čime se smanjuje utjecaj stresa na biljku. Stoga je provedeno istraživanje s ciljem testiranja utjecaja biostimulatora 'AminoVital' i 'Phylgreen' na morfološka svojstva ploda i prinos krastavca ('Q smart', 'Touareg' i 'Paraiso') u hidroponskom uzgoju u usporedbi s netretiranom kontrolom. U razdoblju od 21. svibnja do 30. srpnja obavljene su dvadeset i tri berbe. Tijekom berbe utvrđeni su broj, masa i morfološka svojstva tržnih plodova te udio netržnih plodova. Istraživanjem je utvrđeno da među promatranim parametrima nije bilo statistički značajne razlike te je izostao pozitivan učinak biostimulatora. Međutim, kultivar 'Touareg' tretiran 'AminoVitalom' razvio je najviše tržnih plodova po biljci (29) i ostvario najveći prinos (6737 g/biljci). Na kontrolnim parcelama bez tretiranja kod istog je kultivara utvrđena i najveća masa tržnih plodova (250 g). Sa biljaka kutivara 'Touareg' tretiranih 'Phylgreenom' ubrano je najmanje (11,6 %) netržnih plodova. Na temelju ostvarenih rezultata za preporučiti je ponavljanje istraživanja u zaštićenom prostoru s boljom regulacijom mikroklimatskih uvjeta, s većim brojem kultivara i biostimulatora te učestalijom primjenom biostimulatora.

Abstract (english)

When growing cucumber seedlings in heated greenhouse, growth parameters (temperature and humidity) are optimal. However, planting in unheated greenhouses may result with abiotic stress and temporary termination of growth. Aplication of biostimulants on plants increases assimilation, usage and translocation of nutrients and decrease stress effects. This experiment investigates specific biostimulants ('AminoVital' and 'Phylgreen') effects on morphological traits and yield of cucumber cultivars 'Q smart', 'Touareg' and 'Paraiso' compared to untreated control. The harvest period lasted from 21. of May to 30. July and 23 harvests were done. During harvest, number, weight and morphological traits of marketable fruits, and the share of unmarketable fruits were determined. It was determined that there was no statistically significant difference between the observed parameters and there was no positive effect on the applied biostimulants. However, cultivar 'Touareg' treated with 'AminoVital' developed the highest number of marketable fruits per plant (29) and achieved the highest yield (6737 g/plant). The highest mass of marketable fruits (250 g) was determined on the control plots without treatment at the same cultivar. At least (11.6%) of unmarketable fruits were harvested from the 'Touareg' plants treated with 'Phylgreen'. Based on the results obtained, it could be recommended to repeat the research in a greenhouse with better regulation of microclimatic conditions, with a higher number of cultivars and biostimulants, and more frequent use of biostimulants.

• Keywords: Cucumis sativus L.; biostimulator; morfološke karakteristike ploda; tržni prinos
• Keywords (english): Cucumis sativus L.; biostimulant; fruit morphological characteristics; marketable yield
• Language: croatian
• URN:NBN: urn:nbn:hr:204:803478
• Study programme: Title: Horticulture; Study programme type: university; Study level: graduate; Academic / professional title: magistar/ magistra inženjer/inženjerka hortikulture (magistar/ magistra inženjer/inženjerka hortikulture)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Access restricted to students and staff of home institution
• Created on: 2019-02-28 13:03:26