Metering Unit Performance of A Vacuum Type Precision Vegetable Planter
Performanse merne jedinice vakuumske sadilice za preciznu sadnju povrća
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Author
Yazgi, Arzu
Degirmencioglu, Adnan
Onal, Ismet
Keywords
carrotonion
vacuum precision seeding
seed distribution accuracy
šargarepa
luk
vakuum precizna sadnja
tačnost dustribucije semena
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The objective of this study was to determine the seeding performance of a precision vegetable planter with vacuum type metering unit at different seed spacings and forward speeds using onion and carrot seeds. The seeding performances were investigated and evaluated based on the seed distribution accuracy on sticky belt stand tests in laboratory conditions. The experiments were conducted at the forward speeds of 1.0, 1.5 and 2.0 m s-1, and seed spacing of 25 and 50 mm for each seed. The vacuum plate of precision metering unit with 90 holes and hole diameter of 0.8 mm was used. The seed distribution accuracy was determined according to the factor of variation (Vf) and goodness criteria (λ) which are represented to be compatible with the Poisson distribution. The factors of variation were found in the range of 0.74-0.89 for carrot and 0.52-0.55 for onion. These values indicated that carrot and onion seeds can be planted in the character of precision seeding by a vacuum type vegetable planter. According to results of the experimental tests it was found that seed distribution accuracy of machine was in very good quality for carrot (λ = %78.42-%93.16) and onion (λ = %88.95-%94.11) seeds. Cil ovog ispitivanja bio je da odredi performanse rada sadilice za preciznu sadnju povrća sa vakuumskim mernim uređajem pri različitim rastojanjima sadnje i brzinama pri sadnji semena luka i šargarepe. Radne performance su bile ispitivane i ocenjene na osnovu tačnosti distribucije semena na testovima sa lepljivim kaišem u laboratorijskim uslovima. Ogledi su izvođeni pri brzinama od 1.0, 1.5 i 2.0 m s-1, i rastojanjima sadnje od 25 i 50 mm. Korišćena je vakuumska ploča preciznog mernog uređaja sa 90 otvora i prečnikom otvora od 0.8 mm. Tačnost distribucije semena bila je određena prema koeficijentu varijacije (Vf) i kriterijumu uklapanja (λ) koji su predstavljeni kao kompatibilni sa Poisson rasporedom. Koeficijenti varijacije bili su u opsegu od 0.74 do 0.89 za šargarepu i 0.52 do 0.55 za luk. Ove vrednosti pokazuju da semena šargarepe i luka mogu precizno da se seju vakuumskim tipom sadilice za povrće. Prema rezultatima testova tačnost distribucije semena bila je veoma dobra i za semena šargarepe (λ=%78.42-%93.16) i za semena luka (λ=%88.95-%94.11).