Utjecaj brzine kretanja pneumatske sijačice na kvalitetu sjetve kukuruza

Martinović, Josip

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master's thesis

Utjecaj brzine kretanja pneumatske sijačice na kvalitetu sjetve kukuruza

Zagreb: University of Zagreb, Faculty of Agriculture, 2019. urn:nbn:hr:204:401973

Martinović, Josip

University of Zagreb
Faculty of Agriculture
Mechanization and Autonomous Systems in Agriculture

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APA 6th Edition

Martinović, J. (2019). Utjecaj brzine kretanja pneumatske sijačice na kvalitetu sjetve kukuruza (Master's thesis). Zagreb: University of Zagreb, Faculty of Agriculture. Retrieved from https://urn.nsk.hr/urn:nbn:hr:204:401973

MLA 8th Edition

Martinović, Josip. "Utjecaj brzine kretanja pneumatske sijačice na kvalitetu sjetve kukuruza." Master's thesis, University of Zagreb, Faculty of Agriculture, 2019. https://urn.nsk.hr/urn:nbn:hr:204:401973

Chicago 17th Edition

Harvard

Martinović, J. (2019). 'Utjecaj brzine kretanja pneumatske sijačice na kvalitetu sjetve kukuruza', Master's thesis, University of Zagreb, Faculty of Agriculture, accessed 14 January 2025, https://urn.nsk.hr/urn:nbn:hr:204:401973

Vancouver

Martinović J. Utjecaj brzine kretanja pneumatske sijačice na kvalitetu sjetve kukuruza [Master's thesis]. Zagreb: University of Zagreb, Faculty of Agriculture; 2019 [cited 2025 January 14] Available at: https://urn.nsk.hr/urn:nbn:hr:204:401973

IEEE

J. Martinović, "Utjecaj brzine kretanja pneumatske sijačice na kvalitetu sjetve kukuruza", Master's thesis, University of Zagreb, Faculty of Agriculture, Zagreb, 2019. Available at: https://urn.nsk.hr/urn:nbn:hr:204:401973

Cite this item: https://urn.nsk.hr/urn:nbn:hr:204:401973

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Title	Utjecaj brzine kretanja pneumatske sijačice na kvalitetu sjetve kukuruza
Title (english)	Impact of working speed on quality of corn planting with pneumatic seed drill
Author	Josip Martinović
Mentor	Igor Kovačev (mentor)
Committee member	Igor Kovačev (predsjednik povjerenstva)
Committee member	Nikola Bilandžija (član povjerenstva)
Committee member	Željko Jukić (član povjerenstva)
Committee member	Zlatko Koronc (član povjerenstva)
Granter	University of Zagreb Faculty of Agriculture (Mechanization and Autonomous Systems in Agriculture) Zagreb
Defense date and country	2019-07-08, Croatia
Abstract	Cilj istraživanja bio je utvrditi optimalnu brzinu kretanja sijaćeg agregata obzirom na radni učinak i kvalitetu sjetve: razmak između redova i razmak unutar reda. Istraživanje je provedeno na dva tipa pneumatskih sijačica (s podtlakom i s nadtlakom) pri tri brzine kretanja (6, 8 i 10 km/h). Nakon sjetve utvrđeno je da sijačica sa podtlakom pri brzini od 6,24 km/h imala 100%-tnu točnost, a pri većim brzinama sjetve javljaju se odstupanja u vrlo malom postotku. U sjetvi sa sijačicom s nadtlakom, povećanjem brzine kretanja sijačice s nadtlakom, došlo je do značajnog smanjenja kvalitete sjetve. Obzirom na učinak agregata povećanje brzine kretanja opravdano je kod sijačice sa principom rada na podtlak zbog toga što povećanjem brzine dolazi do vrlo malih odstupanja u zadanom sklopu i malog smanjenja kvalitete sjetve prema ISO 7256.
Abstract (english)	The aim of this research was to determine the optimal working speed air seed drill regarding work rate and seed distribution: space between rows and space within rows. The research was conducted with two types of pneumatic sowing machines (with overpressure and with vacuum metering system) at three working speeds (6, 8 and 10 km/h). After sowing it was determined that the sowing machine with vacuum metering system at the speed of 6,24 km/h had 100 % accuracy, and at higher speeds minor deviations occurred. In sowing with the sowing machine with overpressure system, increasing the working speed resulted with a major decrease of seed distribution quality. Given the work rate of the sowing aggregate, the increase of the working speed is justified in the case of vacuum type pneumatic seed drill because the increase in speed results in minor deviations in sowing rates and seeding quality according to ISO 7256.
Keywords
Keywords (english)
Language	croatian
URN:NBN	urn:nbn:hr:204:401973
Study programme	Title: Agricultural Engineering Study programme type: university Study level: graduate Academic / professional title: magistar/ magistra inženjer/inženjerka poljoprivredne tehnike (magistar/ magistra inženjer/inženjerka poljoprivredne tehnike)
Type of resource	Text
File origin	Born digital
Access conditions	Open access
Terms of use
Repository	Repository Faculty of Agriculture University of Zagreb
Created on	2019-07-15 06:51:49