Soil respiration of wheat, maize, and barley in continental Croatia

master's thesis

• Title (croatian): Disanje tla pšenice, kukuruza i ječma u kontinentalnoj Hrvatskoj
• Author: Dija Bhandari
• Mentor: Darija Bilandžija (mentor)
• Mentor: Theresa Reinhardt Piskackova https://orcid.org/0000-0002-2659-069X (komentor)
• Committee member: Darija Bilandžija (predsjednik povjerenstva)
• Committee member: Theresa Reinhardt Piskackova https://orcid.org/0000-0002-2659-069X (član povjerenstva)
• Committee member: Aleksandra Bensa (član povjerenstva)
• Committee member: Željka Zgorelec (član povjerenstva)
• Granter: University of Zagreb; Faculty of Agriculture; (General Agronomy); Zagreb
• Defense date and country: 2024-08-21, Croatia
• Scientific / art field, discipline and subdiscipline: BIOTECHNICAL SCIENCES; Agronomy

Abstract

Soil respiration (Rs) in croplands is of primary importance in understanding C cycle mechanism and C balance of agroecosystem. This study aims to examine the Rs in three predominant crops in continental Croatia: maize, wheat and barley. The study was conducted at the experimental station of Agricultural Institute Osijek during the growing season 2021/2022. Rs was determined by in situ closed static chamber method. The study found that crop type plays a prominent role in dynamics of Rs, while... More temperature and moisture could play limiting roles. Significant temporal variation of Rs between months was found and was in the range of 8.07 - 23.5; 8.27 - 41.02 and 7.09 - 33.66 kg C – CO2 ha-1 day-1 in wheat, barley and maize respectively. Mean seasonal Rs for wheat, barley and maize was respectively 14.73, 19.64 and 12.72 kg C – CO2 ha-1 day-1. Cropped fields had 2-3 times higher Rs than no vegetation/fallow, which indicated the importance of autotrophic respiration in cropped fields. Less

Abstract (croatian)

Disanje tla (Rs) na obradivim površinama je od primarne važnosti za razumijevanje mehanizma kruženja i bilance ugljika agroekosustava. Ovo istraživanje ima za cilj istražiti disanje tla kod tri najzastupljenije žitarice u kontinentalnoj Hrvatskoj: kukuruzu, pšenici i ječmu, te njegovu sezonsku varijaciju. Istraživanje je provedeno na pokusnim površinama Poljoprivrednog instituta Osijek tijekom vegetacijske sezone 2021./2022. Disanje tla je utvrđeno in situ metodom zatvorenih statičkih... More komora. Istraživanjem je utvrđeno kako vrsta usjeva ima istaknutu ulogu u dinamici disanja tla, dok temperatura i vlaga tla mogu biti ograničavajući čimbenici. Istraživanjem je utvrđena značajna sezonska varijabilnost disanja tla koje se kretalo u rasponu 8,07 – 23,5; 8,27 – 41,02 i 7,09 – 33,66 kg C – CO2 ha-1 dan-1 za pšenicu, ječam i kukuruz redom. Prosječno sezonsko disanje tla za pšenicu, ječam i kukuruz iznosi redom 14,73; 19,64 i 12,72 kg C – CO2 ha-1 dan-1. Disanje tla je na površinama pod usjevom bilo 2-3 puta veće u odnosu na površine bez vegetacije/crni ugar, što ukazuje na važan doprinos autotrofnog disanja. Less

• Keywords: soil CO2 emissions; cereals; climate change; C cycle
• Keywords (croatian): emisije CO2 iz tla; žitarice; klimatske promjene; kruženje ugljika
• Language: english
• URN:NBN: urn:nbn:hr:204:645552
• Study programme: Title: Sustainability in Agriculture, Food Production and Food Technology in the Danube Region; Study programme type: university; Study level: graduate; Academic / professional title: magistar/magistra inženjer/inženjerka agronomije (magistar/magistra inženjer/inženjerka agronomije)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Access restricted to students and staff of home institution
• Created on: 2024-09-04 08:56:59