Utjecaj prihrane dušikom na agronomska i kemijska svojstva duhana tipa burley

master's thesis

• Title (english): Effects of nitrogen fertilization on agronomic and chemical traits of burley tobacco
• Author: Krešimir Ljubičić
• Mentor: Jasminka Butorac (mentor)
• Committee member: Jasminka Butorac (predsjednik povjerenstva)
• Committee member: Marko Vinceković (član povjerenstva)
• Committee member: Luna Maslov Bandić (član povjerenstva)
• Granter: University of Zagreb; Faculty of Agriculture; (Department of Field Crops, Forage and Grassland); Zagreb
• Defense date and country: 2019-09-30, Croatia
• Scientific / art field, discipline and subdiscipline: BIOTECHNICAL SCIENCES; Agronomy

Abstract

Na Pokušalištu Sveučilišta u Zagrebu Agronomskog fakulteta u Maksimiru tijekom 2018. godine postavljen je gnojidbeni pokus sa duhanom tipa burley. Pokus je postavljen prema metodi slučajnog bloknog rasporeda u četiri ponavljanja. Provedena je standardna agrotehnika za duhan tipa burley izuzev prihrane dušikom. U prihranjivanju je dodan dušik u pet različitih varijanti: 1. Kontrola 100 kg/ha KAN-a, 2. 90 kg/ha KAN-a+10 kg/ha mikrokapsula, 3. 80 kg/ha KAN-a+20 kg/ha mikrokapsula, 4. 90 kg/ha KAN-a+10 kg/ha mikrokapsula s kitozanom, 5. 80 kg/ha KAN-a+20 kg/ha mikrokapsula s kitozanom. Sadnja je izvršena ručno 11. svibnja 2018. sa. F1 hibridom BH 4. Na uzorku od 10 biljaka tijekom vegetacije određen je broj listova, dužina i širina 9. lista, visina biljke nakon zalamanja, a na cijeloj parceli početak cvatnje. Listovi su ručno ubrani u sedam berbi i osušeni na zraku u hladu. Nakon sušenja određen je prinos (kg/ha) i duhan je klasiran u šest klasa. Od kemijskih spojeva određen je sadržaj nikotina u suhim srednjim listovima duhana. Na osnovi provedene statističke analize varijance utvrđene su signifikantne razlike u udjelu prve klase, širini 9. lista, visini biljke nakon zalamanja i u početku cvatnje. Najduži 9. list zabilježen je kod varijante 80 kg/ha KAN-a + 20 kg/ha mikrokapsula (58,28 cm), a signifikantno najširi 9. list imala je varijanta 80 kg/ha KAN-a + 20 kg/ha mikrokapsula s kitozanom (35,43 cm). Najveći prinos po hektaru imala je varijanta prihrane 90 kg/ha KAN-a + 10 kg/ha mikrokapsula s kitozanom (3119,71 kg/ha), dok je udio najkvalitetnijeg lista, prve klase, značajno više od ostalih varijanti, imala kontrola (10,87 %).

Abstract (english)

A fertilization experiment with burley tobacco has been set up at the University of Zagreb Probationary Faculty of Agronomy in Maksimir during 2018. The experiment was set up according to the random block method in four replicates. Standard agrotechnics for burley tobacco were implemented, except for the savings. Nitrogen is added to the feed in five different variants: 1. Control of 100 kg / ha of KAN, 2. 90 kg / ha of KAN + 10 kg / ha of microcapsules, 3. 80 kg / ha of KAN + 20 kg / ha of microcapsules, 4. 90 kg / ha of KAN + 10 kg / ha of microcapsules with chitosan, 5. 80 kg / ha of KAN + 20 kg / ha of microcapsules with chitosan. Planting was done manually on May 11, 2018 by. F1 hybrid BH 4. A sample of 10 plants during the growing season determined the number of leaves, the length and width of the 9th leaf, the height of the plant after topping, and the days to flowering on the entire plot. The leaves were harvested by hand in seven harvests and air-cured in the shade. After drying, the yield (kg / ha) was determined and the tobacco was classified into six classes. From chemical compounds, the content of nicotine in the dry middle leaves of tobacco was determined. On the basis of the statistical analysis of variance, significant differences were found in the shares of the first class, the width of the 9th leaf, the height of the plant after topping and in the days to flowering. The highest yield per hectare had a variant of feeding 90 kg / ha KAN + 10 kg / ha chitosan microcapsules (3119.71 kg / ha), while the highest stake of first class leaf, significantly higher than other variants, had control ( 10.87%).The longest 9th leaf was recorded at the variant of feeding 80 kg / ha KAN + 20 kg / ha microcapsules (58.28 cm), and significantlly the widest 9. leaf had a variant of feeding 80 kg / ha KAN + 20 kg / ha microcapsules with chitosan (35.43 cm).

• Keywords: duhan; burley; prihrana dušikom; mikrokapsule
• Keywords (english): tobacco; burley; nitrogen fertilization; microcapsules
• Language: croatian
• URN:NBN: urn:nbn:hr:204:046834
• Study programme: Title: Plant Sciences; Study programme type: university; Study level: graduate; Academic / professional title: magistar / magistra inženjer/inženjerka biljnih znanosti (magistar / magistra inženjer/inženjerka biljnih znanosti)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Open access
• Created on: 2021-03-26 09:56:41