Effects of Tractor Mounted Mulcher Blades on the Mulching Depth of Oil Palm Fronds
Publication Date : 07/02/2018
Pruning generate large amount of oil palm fronds (OPFs) waste. Mulchers are expensive and damage estate infrastructures during mulching. A tractormounted mulcher produced by Howard Company has not been evaluated. Three different blades were developed using Solid Works. They were compared with original blade in terms of mulching depth. Data acquisition were done at Universiti Putra Malaysia oil palm by four blades with lifting angles 60o, 90o, 120o, and 150o, two tractor PTO speeds (540 and 1000 rpm) and three tractor forward speeds (1, 3, and 5 km/h). ANOVA test in CRBD showed significance at (P<0.05). Tukey's Studentized Range (HSD) test showed significant difference between the means (P<0.05). Analysis of multiple linear regression on mulching depth showed significant results, where p = 0.0435, R2 = 0.5792 indicating the model was significant. Based on interaction, blade with 120o lifting angle at tractor forward speed of 5 km/h and tractor PTO speed of 1000 rpm gave the best depth of mulching with mean value of 14.10 cm.
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