Promjene kemijskih svojstava tla uslijed primjene pepela pod kulturom Miscanthus x giganteus

master's thesis

• Title (english): Changes in soil chemical properties due to the application of ash under the culture Miscanthus x giganteus
• Author: Stella Arlović
• Mentor: Darija Bilandžija (mentor)
• Committee member: Darija Bilandžija (predsjednik povjerenstva)
• Committee member: Aleksandra Bensa (član povjerenstva)
• Committee member: Josip Leto (član povjerenstva)
• Granter: University of Zagreb; Faculty of Agriculture; (General Agronomy); Zagreb
• Defense date and country: 2021-09-29, Croatia
• Scientific / art field, discipline and subdiscipline: BIOTECHNICAL SCIENCES; Agronomy

Abstract

Izgaranjem biomase nastaju velike količine pepela kojeg treba na prihvatljiv i siguran način zbrinjavati i upotrebljavati. Zahvaljujući svom kemijskom i fizikalnom sastavu, pepeo iz biomase ima veliki potencijal za upotrebu kao poboljšivač tla. Stoga je cilj rada utvrditi utjecaj primjene različitih doza pepela (0, 2 i 5 t/ha) na reakciju tla (pH), sadržaj biljci pristupačnog fosfora (P2O5) i kalija (K2O) u tlu, udio humusa, ukupnih karbonata (CaCO3) te ukupnog dušika (N) pod energetskom kulturom miskantus. Istraživanje je provedeno na pokušalištu Sveučilišta u Zagrebu Agronomskog fakulteta „Šašinovec“ tijekom 2020. godine. Provedenim istraživanjem je utvrđeno kako primjena pepela nakon jedne godine nije imala značajan utjecaj na pH tla, udio humusa i ukupnog dušika u tlu, ali je značajno utjecala na sadržaj karbonata te sadržaj biljci pristupačnog fosfora i kalija u tlu. Udio karbonata u tlu se značajno smanjio tijekom promatranog razdoblja, a primjena pepela (2 i 5 t/ha) je utjecala na značajno manje iznošenje karbonata u odnosu na netretirano tlo. Sadržaj biljci pristupačnog fosfora u tlu se također značajno smanjio, a primjena pepela (2 i 5 t/ha) je doprinijela njegovom smanjenju. Sadržaj biljci pristupačnog kalija u tlu se značajno povećao tijekom promatranog razdoblja, koje je proporcionalno raslo sa povećanjem primijenjenih doza pepela. U istraživanim agroekološkim uvjetima primjena pepela je imala pozitivan utjecaj na udio ukupnih karbonata i sadržaj biljci pristupačnog kalija u tlu, negativan utjecaj na sadržaj biljci pristupačnog fosfora i nije imala utjecaj na reakciju tla, udio humusa i ukupnog dušika u tlu pod energetskom kulturom miskantus.

Abstract (english)

During the biomass combustion, large amounts of ash which should be disposed of and utilized in an environmentally acceptable way are produced. Due to its chemical and physical composition, biomass ash has great potential for use as a soil amendment. Therefore, the aim of this study is to determine the effect of application of different doses of ash (0, 2 and 5 t/ha) on soil reaction (pH), soil plant-accessible phosphorus (P2O5) and potassium (K2O) content, humus content, total carbonates (CaCO3) and total nitrogen (N) under the perennial energy culture Miscanthus x gigantheus. The research was conducted at the experimental station "Šašinovec" of the University of Zagreb Faculty of Agriculture during 2020. The study showed that the application of ash after one year did not have a significant impact on soil reaction, humus content and total nitrogen content in the soil, but did significantly affect the content of carbonates, plant-accessible phosphorus and potassium. The content of carbonates decreased significantly during the observed period, and the application of ash (2 and 5 t/ha) resulted in significantly lower carbonate removal compared to untreated soil. The content of plant-accessible phosphorus also decreased significantly, and the application of ash (2 and 5 t/ha) contributed to its reduction. The content of plant-accessible potassium in the soil increased significantly during the observed period, which increased proportionally with the increase of applied ash doses. In the studied agroecological conditions, the application of ash had a positive effect on total carbonates and plant-accessible potassium, a negative impact on plant-accessible phosphorus content and had no significant effect on soil reaction, humus and total nitrogen content in soil under energy culture Miscanthus x gigantheus.

• Keywords: reakcija tla; biljci pristupačan fosfor i kalij u tlu; humus; ukupni karbonati; dušik
• Keywords (english): soil reaction; plant-accessible phosphorus and potassium; humus; total carbonates; nitrogen
• Language: croatian
• URN:NBN: urn:nbn:hr:204:506813
• 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: 2021-12-02 08:24:47