Effects of degree of oil palm frond mulching using tractor mounted mulcher blades

  • Bala Gambo Jahun Department of Agricultural and Bioresource Engineering, Abubakar Tafawa Balewa University, Bauchi State, Nigeria; Department of Biological and Agricultural Engineering, Universiti Putra Malaysia, Serdang, Selagor Darul Ehsan, Malaysia. https://orcid.org/0000-0002-0009-4495
  • Desa bin Ahmad | desa@upm.edu.my Department of Biological and Agricultural Engineering, Universiti Putra Malaysia, Serdang, Selagor Darul Ehsan, Malaysia.
  • Muhammad Razif Mahadi Department of Biological and Agricultural Engineering, Universiti Putra Malaysia, Serdang, Selagor Darul Ehsan, Malaysia.
  • Shamsuddin Sulaiman Department of Mechanical and Manufacturing Engineering, Universiti Putra Malaysia, Serdang, Selagor Darul Ehsan, Malaysia.
  • Shehu Adamu Iya Department of Agricultural and Environmental Engineering, Modibbo Adama University of Technology, Yola Adamawa State, Nigeria.

Abstract

This study investigates the influence of blade lifting angles, tractor forward speed, and tractor power take off (PTO) speed on the degree of mulching. Four blades with different lifting angles, two tractor PTO speeds, and three tractor forward speeds were assessed using the parametric test at the Universiti Putra Malaysia oil palm plantation. The result shows that the best-fit regression equation was a quadratic regression with a high coefficient of determination. It indicates that any change in this three-factor interaction has a significant effect using Tukey’s Studentized mean comparison and can predict the degree of mulching. Seventy-four percent of the degree of mulching variance is explained by blade lifting angles, tractor forward speed, and tractor PTO speed. Since the blade lifting angle was a major predictor of the degree of mulching, this result implies that any change in the blade lifting angle can provide a significant prediction of the degree of mulching in an oil palm plantation. Additionally, the predicted model can further be used to predict the degree of mulching during field operations, replanting, and access for mulching of oil palm fronds. A detailed field evaluation of the performance of a tractor-mounted mulcher with different blade lifting angles in other parts of Malaysia is highly recommended to cater for the differences in soil moisture content and bulk density.

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Published
2021-03-18
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Original Articles
Keywords:
Degree of mulching, forward speeds, mulcher blade, oil palm fronds.
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How to Cite
Gambo Jahun, B., bin Ahmad, D., Razif Mahadi, M., Sulaiman, S., & Iya, S. A. (2021). Effects of degree of oil palm frond mulching using tractor mounted mulcher blades. Journal of Agricultural Engineering, 52(1). https://doi.org/10.4081/jae.2021.1083