Effect of Selected Parameters on Tray Angle for Smooth Dropping of Seedlings in Semi-Automatic Vegetable Transplanter

Abstract

Studies were conducted on a single row semi-automatic vegetable transplanter to determine the optimum tray angle in the feeding and metering mechanism at different seedling ages and different types of seedlings. The optimum tray angle at which the finger trays have been fitted to the carrying chain has been determined through laboratory experimentation. The experiments have been designed as a three factors C.R.D. with four replications. The percentage of seedlings properly dropped (PSPD) increased with finger tray angle from 20 to 30 degree where per cent dropping was observed irrespective of type of crop and length of seedlings. The PSPD decreased as the finger tray angle was increased above 30 degree. Chilli had the highest PSPD at any particular tray angle setting in comparison to other crops whereas tomato had the least per cent of seedlings properly dropped. The smaller seedlings (100-150 mm) as well as larger seedlings (250-300 mm) showed relatively more difficulty in dropping properly than the medium length (150-250 mm) seedlings.

Istraživanje je imalo za cilj ispitivanje jednoredne poluautomatske sadilice za povrće, kako bi se odredio otimalan ugao zahvatanja i ulaganja različitih tipova sadnica rasada u zemljište. Optimalni ugao vođice na kojoj su prihvatni prsti pričvršćeni na noseći lanac, je određen u labaratorijskim uslovima. Eksperiment je urađen kao trofaktorijalni C.R.D. sa četiri ponavljanja. Procenat sadnica rasada, pravilno postavljenih (PSPD) se povećavao sa uglom postaljvaja od 20 do 30 stepeni. Za ovaj dijapazon se pokazalo da tip sadnice i njena dužina ne utiču na kvalitet sadnje. PSPD se smanjivao sa povećanjem ugla postavljanja vođice, preko 30 stepeni. Čili sadnice su imale najviši PSPD u poređenju sa ostalim kulturama, dok je PSPD bio najniži kod paradajza. Sitnije sadnice (100-150 mm) kao i krupnije (250-300 mm) su pokazale poteškoće prilikom sadnje u poređenju sa srednje razvijenim (150-250 mm) sadnicama.