Losses in Alfalfa Mowing Process Performed by Selfpropelled Mower and Hay Crusher “Fortschritt” E 302
Gubici prilikom košenja lucerke samohodnom kosačicom-gnječilicom "Fortschritt" E-302
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Author
Vukovic, Aleksandar
Barac, Sasa
Stanimirovic, Nebojsa
Keywords
self-propelled mower and hay crushermowing
losses
incision height
samohodna kosačica gnječilica
košenje
gubici
visina reza
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Show full item recordAbstract
This paper shows the losses created during alfalfa mowing process performed
by self-propelled and hay crusher “Fortschritt” E 302. The losses detected during
research process have been divided into two groups: losses caused by increased incision
height (over 6 cm), and losses caused by crushing. The total losses made during mowing
by the tested mower were calculated by adding the incision height losses and crushing
losses. The research results indicate that the minimal losses caused by the incision height
are 1,08 % of yields, at the aggregate mowing speed of 4,90 km/h. Aggregate mowing
speed increase tend to slightly increase the losses up to maximum values of 1,31 % at the
mowing speed of 9,52 km/h. The crunching losses ranged from minimal 0,27 % at the
minimal aggregate mowing speed. The average total losses were 1,52 % of yields at the
average aggregate mowing speed of 6,89 km/h. U radu su prikazani gubici koji su nastali prilikom košenja lucerke
samohodnom kosačicom-gnječilicom "Fortschritt" E-302. Gubici koji su se javili
prilikom ispitivanja, svrstani su u dve grupe, kao gubici usled povećane visine reza
(iznad 6 cm), i kao gubici usled usitnjavanja(delovi biljke koje nije moguće zahvatiti
radnim organima kosačice, te ostaju neiskorišćeni na parceli). Sabiranjem gubitaka usled
visine reza i gubitaka usled usitnjavanja, dobijeni su ukupni gubici pri radu ispitivane
kosačice. Određivanje gubitaka vršeno je u četiri probe. Rezultati ispitivanja nam
pokazuju da su minimalni gubici usled visine reza iznosili 1,08 % od prinosa, pri brzini
kretanja agregata od 4,90 km/h. Sa povećanjem brzine kretanja agregata uočava se
tendencija laganog povećanja gubitaka do maksimalne vrednosti od 1,31 %, pri brzini
kretanja od 9,52 km/h. Gubici usled usitnjavanja su se kretali od minimalnih 0,27 %, pri
maksimalnoj brzini kretanja, do maksimalnih 0,36 % pri minimalnoj brzini kretanja
agregata. Prosečni ukupni gubici iznosili su 1,52 % od prinosa, pri prosečnoj brzini
kretanja agregata od 6,89 km/h.