Ukupne kiseline, pH i količina šećera ploda paprike pri folijarnoj primjeni kalcijevih poboljšivača

master's thesis

• Title (english): Total acid, pH and sugar content of pepper fruit in foliar application of calcium enhancers
• Author: Valentina Petek
• Mentor: Marko Petek (mentor)
• Committee member: Marko Petek (predsjednik povjerenstva)
• Committee member: Klaudija Carović-Stanko (član povjerenstva)
• Committee member: Sanja Radman (član povjerenstva)
• Granter: University of Zagreb; Faculty of Agriculture; (Plant Nutrition); Zagreb
• Defense date and country: 2021-09-24, Croatia
• Scientific / art field, discipline and subdiscipline: BIOTECHNICAL SCIENCES; Agronomy

Abstract

Zbog brojnih pozitivnih učinaka na rast i razvoj biljaka danas se u poljoprivredi koriste brojni
biostimulatori. To su preparati koji sadrže tvari i/ ili organizme čija je uloga poticanje prirodnih
procesa u biljci. Cilj ovog rada bio je utvrditi utjecaj folijarnih kalcijevih materijala na ukupne
kiseline, pH i količinu šećera u plodu paprike. Poljski gnojidbeni pokus proveden je na
pokušalištu Maksimir Zavoda za sjemenarstvo Agronomskog fakulteta Sveučilišta u Zagrebu
na dva kultivara paprike (Capsicum annuum L.) (babura – 'Šorokšari' i rog – 'Kurtovska kapija').
Presadnice paprika uzgojene su u plasteniku i presađene na polje na razmak redova 70 cm i
40 cm razmaka unutar reda. Pokus je uključivao 4 folijarna tretmana gnojidbe kalcijevim
poboljšivačima rasta. Kalcijevi poboljšivači rasta primijenjeni su folijarno 3 puta u vegetaciji.
Obavljene su dvije berbe plodova. Utvrđeno je kako primjena biostimulatora nije imala
značajan utjecaj na količinu ukupnih kiselina, dok je potvrđeno povećanje količine šećera, te
pH vrijednosti. Najveća vrijednost količine šećera postignuta je kod sorte 'Kurtovska kapija'
primjenom Ecogreena visoke koncentracije u drugom uzorkovanju i iznosi 10,1 %. Najveća
vrijednost ukupnih kiselina postignuta je kod sorte 'Kurtovska kapija' primjenom Ecogreena i
iznosila je 3,66 g/L, dok je najveća pH vrijednost postignuta kod sorte 'Šorokšari' primjenom
Zeogreena u prvom uzorkovanju i iznosila je 5,85.

Abstract (english)

Due to the numerous positive effects on plant growth and development, numerous
biostimulators are used in agriculture today. They are preparations that contain substances
and/ or organisms whose role is to stimulate natural processes in plants. The aim of this study
was to determine the effect of foliar calcium materials on total acids, pH and the amount of
sugar in pepper fruit. The field fertilization experiment was carried out ate the experimental
field of Maksimir of the Department of Seed Science of the Faculty of Agriculture, University
of Zagreb on two cultivars of pepper (Capsicum annum L.) ‘Šorokšari’ and ‘Kurtovska kapija’.
Pepper seedlings were grown in a greenhouse and transplanted to the field at a row spacing
of 70 cm and 40 cm spacing within the rows. The experiment included 4 foliar fertilization
treatments with calcium growth enhancers. Calcium growth enhancers were applied foliarly
3 time in vegetation. Two fruit harvests were performed. It was found that the use of
biostimulants did not have a significant effect on the content of total acids, while an increase
in the content of sugar, and pH was confirmed. The highest value of the amount of sugar was
achieved in the variety ‘Kurtovska kapija’ using high concentration of Ecogreen in the second
sampling and is 10.1 %, the highest value of total acids was achieved in the variety ‘Kurtovska
kapija’ using Ecogreen and was 3.66 g/L, while the highest pH value was achieved in variety
‘Šorokšari’ using Zeogreen in the first sampling and was 5.85.

• Keywords: biostimulator; Brix; Capsicum annum L.; kultivar
• Keywords (english): biostimulants; Brix; Capsicum annum L.; cultivar
• Language: croatian
• URN:NBN: urn:nbn:hr:204:264990
• Study programme: Title: Agroecology; Study programme type: university; Study level: graduate; Academic / professional title: magistar/ magistra inženjer/inženjerka agroekologije (magistar/ magistra inženjer/inženjerka agroekologije)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Access restricted to authenticated users
• Created on: 2021-11-26 11:34:12