Utjecaj troske iz elektropeći na rast i fiziološke procese graha (Phaseolus vulgaris L.)

doctoral thesis

• Title (english): Effect of electric arc furnace slag on growth and Physiology of common bean (Phaseolus vulgaris L.)
• Author: Dubravka Sandev
• Mentor: Sandra Radić Brkanac (mentor); MBZ: 245550
• Committee member: Branka Pevalek-Kozlina (član povjerenstva)
• Committee member: Hrvoje Lepeduš (član povjerenstva)
• Committee member: Ana-Marija Domijan (član povjerenstva); MBZ: 222653
• Granter: University of Zagreb; Faculty of Science; (Department of Biology); Zagreb
• Defense date and country: 2016, Croatia
• Scientific / art field, discipline and subdiscipline: NATURAL SCIENCES; Biology
• Universal decimal classification (UDC): 57 - Biological sciences. Physical anthropology. Biodiversity

Abstract

Troska korištena u ovom istraživanju je nusprodukt pri proizvodnji nelegiranih ugljičnih čelika u elektropeći. Istraživanja kemijskog sastava troske utvrdila su relativno visok udio makro- i mikroelemenata te nizak sadržaj toksičnih metala. Dokazano je da se metali iz troske postepeno otpuštaju te da ne predstavljaju rizik za okoliš. Cilj istraživanja bio je procijeniti utjecaj troske na rast i fiziološke procese graha (Phaseolus vulgaris) te usporediti njenu učinkovitost s onom umjetnog gnojiva. U tu su svrhu provođeni eksperimenti u stakleniku i na pokusnim poljima tijekom nekoliko sezona. Troska je u nižim količinama povećala rast graha, sadržaj pojedinih hranjivih tvari u supstratu i grahu kao i intenzitet fotosinteze. Na temelju pokazatelja oksidacijskog stresa, utvrđeno je da troska nije fitotoksična. Rezultati su pokazali da je troska izvrstan izvor hranjiva neophodnih za rast i razvoj biljaka, po mnogim parametrima bolji ili podjednako učinkovit kao umjetno gnojivo. Elektropećna troska može se koristiti kao učinkovit poboljšivač tla.

Abstract (english)

The slag used in this research is a byproduct of unalloyed carbon steel making process in electric arc furnace. Chemical composition of the steel slag show relatively high content of certain macro- and microelements and the low content of toxic metals. Metals within slag are released gradually and thus do not pose a threat to the environment. The aim of this study was to evaluate the effects of steel slag on growth and physiological processes of bean (Phaseolus vulgaris) and to compare the efficiency of steel slag to that of the artificial fertilizer. For the purpose, greenhouse and field experiments were conducted during several seasons. Steel slag increased growth, content of essential minerals in the substrate and bean plants as well as photosynthetic rate. Based on oxidative stress parameters, potential phytotoxicity of steel slag was not determined. The obtained results show that steel slag is a very good and inexpensive source of nutrients essential to plants, equally efficient or even better than artificial fertilizer. The steel slag can be used as an excellent soil amendment.

• Keywords: elektropećna troska; hranjiva; fotosinteza; grah
• Keywords (english): electric arc steel slag; nutrients; photosynthesis; common bean
• Language: croatian
• URN:NBN: urn:nbn:hr:217:272466
• Study programme: Title: Biology; Study programme type: university; Study level: postgraduate; Academic / professional title: doktor/doktorica znanosti, područje prirodnih znanosti, polje biologija (doktor/doktorica znanosti, područje prirodnih znanosti, polje biologija)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Open access
• Created on: 2017-05-16 10:30:00