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master's thesis
ISPITIVANJE PNEUMATSKIH SIJAĆICA PRIMJENOM ISO STANDARDA 7256/1
2021. urn:nbn:hr:151:541424
Kamenčak, Ivan
Josip Juraj Strossmayer University of Osijek
Faculty of Agrobiotechnical Sciences Osijek
Department of Agricultural Engineering and Renewable Energy Resources

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Kamenčak, I. (2021). ISPITIVANJE PNEUMATSKIH SIJAĆICA PRIMJENOM ISO STANDARDA 7256/1 (Master's thesis). Osijek: Josip Juraj Strossmayer University of Osijek, Faculty of Agrobiotechnical Sciences Osijek. Retrieved from https://urn.nsk.hr/urn:nbn:hr:151:541424

Kamenčak, Ivan. "ISPITIVANJE PNEUMATSKIH SIJAĆICA PRIMJENOM ISO STANDARDA 7256/1." Master's thesis, Josip Juraj Strossmayer University of Osijek, Faculty of Agrobiotechnical Sciences Osijek, 2021. https://urn.nsk.hr/urn:nbn:hr:151:541424

Kamenčak, Ivan. "ISPITIVANJE PNEUMATSKIH SIJAĆICA PRIMJENOM ISO STANDARDA 7256/1." Master's thesis, Josip Juraj Strossmayer University of Osijek, Faculty of Agrobiotechnical Sciences Osijek, 2021. https://urn.nsk.hr/urn:nbn:hr:151:541424

Kamenčak, I. (2021). 'ISPITIVANJE PNEUMATSKIH SIJAĆICA PRIMJENOM ISO STANDARDA 7256/1', Master's thesis, Josip Juraj Strossmayer University of Osijek, Faculty of Agrobiotechnical Sciences Osijek, accessed 24 January 2025, https://urn.nsk.hr/urn:nbn:hr:151:541424

Kamenčak I. ISPITIVANJE PNEUMATSKIH SIJAĆICA PRIMJENOM ISO STANDARDA 7256/1 [Master's thesis]. Osijek: Josip Juraj Strossmayer University of Osijek, Faculty of Agrobiotechnical Sciences Osijek; 2021 [cited 2025 January 24] Available at: https://urn.nsk.hr/urn:nbn:hr:151:541424

I. Kamenčak, "ISPITIVANJE PNEUMATSKIH SIJAĆICA PRIMJENOM ISO STANDARDA 7256/1", Master's thesis, Josip Juraj Strossmayer University of Osijek, Faculty of Agrobiotechnical Sciences Osijek, Osijek, 2021. Available at: https://urn.nsk.hr/urn:nbn:hr:151:541424

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Metadata
TitleISPITIVANJE PNEUMATSKIH SIJAĆICA PRIMJENOM ISO STANDARDA 7256/1
Title (english)TESTING OF PNEUMATIC SOWING MACHINES USING ISO STANDARD 7256/1
AuthorIvan Kamenčak
MentorĐuro Banaj (mentor)
Committee memberBojan Stipešević (predsjednik povjerenstva)
Committee memberVjekoslav Tadić (član povjerenstva)
GranterJosip Juraj Strossmayer University of Osijek
Faculty of Agrobiotechnical Sciences Osijek
(Department of Agricultural Engineering and Renewable Energy Resources)
Osijek
Defense date and country2021-07-19, Croatia
Scientific / art field,
discipline and subdiscipline		BIOTECHNICAL SCIENCES
Agronomy
Agricultural Engineering and Technology
Abstract
U radu su prikazani rezultati kvalitete sjetve pri simulaciji na ispitnom stolu u Praktikumu za poljoprivrednu tehniku i obnovljive izvore energije na Fakultetu agrobiotehničkih znanosti Osijek. Utvrđivanje kvalitete rada sijačice prikazano je pomoću koeficijenata kvalitete sjetve (ISO standard 7256/1 i 7256/2) odnosno indeks MISS (miss indeks), MULT (multiple indeks) i QFI (quality of feed indeks). Ispitan je utjecaj četiri različite frakcije sjemena kukuruza kod dva hibrida na kvalitetu sjetve. Simulacija sjetve obavljena je s različitih tehničkim čimbenicima podešavanja sijačice na ispitnom stolu (dva različita podtlaka, tri brzine gibanja sijačice i četiri položaja skidača viška sjemena). Provedenom simulacijom sjetve na ispitnom stolu utvrđena je statistički značajna razlika utjecaja različitih oblika/frakcija zrna, položaja skidača sjemena, podtlaka i brzine gibanja sijačice na razmak zrna unutar reda prilikom sjetve oba istraživana hibrida. Podtlačna sijačica PSK4 na ispitnom stolu pri brzini gibanja od 4 km ha-1 i položajem skidača sjemena na oznaci 10 ostvarila je visoke koeficijente kvalitete sjetve te se temeljem ostvarenog QFI indeks > 98,6 % može svrstati u grupu vrlo dobrih sijačica. Kod ove brzine gibanja sijačice ispitivani oblici sjemena nisu značajno utjecali na ostvarenje razmake u sjetvi. Nadalje pri upotrebi hibrida H1 ostvaren je prosječni razmaka zrna u sjetvi unutar reda od 19,60 cm koji osigurava sjetvu od 72 448 biljaka ha-1.
Abstract (english)
This paper demonstrates the maize sowing quality results obtained at a test bench. The sowing quality determination is illustrated using the sowing quality indices (ISO standard 7256/1 and 7256/2), i.e. the MISS, MULT, and QFI indices. The research examined a sowing‐quality influence of four different maize‐seed fractions with two hybrids. A sowing simulation was performed with different technical sowing parameters (two vacuum pressures, three working speeds, and four different grain‐selector positions).With the aforementioned research parameters, a statistically significant difference was detected pertaining to different grain fractions, grain‐selector positions, vacuum pressure and working speed concerning the intrarow grain spacing of both maize hybrids researched. The PSK 4 vacuum sowing machine scored the high sowing quality coefficients (QFI index >98.6%) at a working speed of 4 km h-1 and with the grain selector positioned at 10 and can be classified in the group of the very good sowing machines. With regard to the H1 maize hybrid, the average intrarow grain spacing amounted to 19.60 cm, which ensures a set of 72,448 plants per ha, while the set amounted to 72,831 plants per ha (having an average intrarow spacing of 19.51 cm).
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:151:541424
Study programmeTitle: Mechanization
Study programme type: university
Study level: graduate
Academic / professional title: magistar/ magistra inženjer/inženjerka mehanizacije (magistar/ magistra inženjer/inženjerka mehanizacije)
Type of resourceText
File originBorn digital
Access conditionsOpen access
Terms of useLicence In copyright icon
Public notediplomski rad
Created on2021-09-10 09:59:57