TEST PERFORMANCE OF FORAGE CHOPPER VERTIKAL WONOSARI TYPE I

Abstract

This research aimed at testing performance of forage chopper verticalWonosari type I by observation covering
uniformity, capacity ofmachinework, and consumptionfuel. Research located inSumberrejo village, subdistrict
of Batanghari, district of Lampung Timur which began in months Juny − Agustus 2014. Themethod usedwas a
Completely Randomized Design (CRD) with two factorial. The first factor is the three engine speeds with levels
(800, 1400 and 1800 rpm), while the second factor is combined of feed freshness (fresh, withered a day and
withered twodays). Every treatmentwere repeated three times so the total thereare 27 treatment. Parameter that
was statistically tested is uniformity of 2 − 5 cmchopped size then continued by F test, LSD 5%and 1%. The results
show that the chopped size 2 − 5 cm most be obtained at the speed 1400 rpmfor fresh corn stalks and withered
a daywith the 32.19%and 39.69%percentage,while thewithered corn stalks two days using the speed 1800 rpm
with 30.12% percentage. The results of analysis of variance calculation shows that the uniformity of chopped
size 2 − 5 cm was different. The work capacity of themachine at speed of 1400 rpm was 834 kg/hour with the
2.17 liters/hour consumption fuel.
Keywords:Capacity, Chopper,Chopped size,Fuel consumption,The performance test