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The effects of Comboplow on some soil physical properties of University Putra Malaysia Research Farm

A disc plough combined with a set of rotary blades (Comboplow) for land preparation has been designed, fabricated and tested. The Comboplow includes two units of tillage tool comprising of a disc plough and several rotary blades. The disc plough cuts, partially or completely inverts a layer of soil...

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Main Authors: Hashemi, Ali, Ahmad, Desa
Format: Conference or Workshop Item
Language:English
Published: Faculty of Engineering, Universiti Putra Malaysia 2012
Online Access:http://psasir.upm.edu.my/id/eprint/50652/1/_TechnicalPapers_CAFEi2012_24.pdf
http://psasir.upm.edu.my/id/eprint/50652/
http://cafei.upm.edu.my/download.php?filename=/TechnicalPapers/CAFEi2012_24.pdf
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spelling my.upm.eprints.506522017-03-02T06:11:17Z http://psasir.upm.edu.my/id/eprint/50652/ The effects of Comboplow on some soil physical properties of University Putra Malaysia Research Farm Hashemi, Ali Ahmad, Desa A disc plough combined with a set of rotary blades (Comboplow) for land preparation has been designed, fabricated and tested. The Comboplow includes two units of tillage tool comprising of a disc plough and several rotary blades. The disc plough cuts, partially or completely inverts a layer of soil to bury surface material. The soil in contact with the surface of disk would be cut and pulverized by the rotary blades. Multiple tillage operations are reduced to a single pass, resulting in a potential reduction of soil compaction, labour and fuel cost. The Comboplow was tested at Universiti Putra Research Farm having sandy clay loam soil texture. The treatments were three types of blades (straight type, curved and L- shaped ) and three rotary speeds (130, 147 and 165 rpm). The parameters measured were Mean Weight Diameter (dry basis), Mean Weight Diameter (wet basis), and soil bulk density. The mean weight diameters of the soil aggregates (dry basis) were 3.54, 3.28 and 3.12 mm at rotational blade speeds of 130, 147 and 165 rpm, respectively. The mean weight diameters of the soil aggregates (dry basis) were 3.21, 3.36 and 3.38 mm for the straight type blade, curved type blade and L-shaped blade, respectively. An increase in rotary speed reduced the mean weight diameter (dry basis). The mean weight diameters of soil aggregates (wet basis) were found to be 1.39, 1.66 and 1.73 mm at rotational speeds of 130, 147 and 165 rpm, respectively. The mean weight diameters of soil aggregates (wet basis) with the straight type blade, curved type blade and L-shaped blade were 1.63, 1.59 and 1.56 mm, respectively. An increase in the rotational speed from 130 to 165 rpm decreased the mean weight diameter (wet basis) by 0.34 mm. In comparison to the control treatment, the straight type blades, L-shaped blades and curved type blades decreased soil bulk density by 23.6%, 23.2% and 21.5%, respectively. The L-shaped blade had maximum and minimum values of percentage bulk density (dry basis) at rotary blade speeds of 165 and 130 rpm, respectively. Faculty of Engineering, Universiti Putra Malaysia 2012 Conference or Workshop Item PeerReviewed application/pdf en http://psasir.upm.edu.my/id/eprint/50652/1/_TechnicalPapers_CAFEi2012_24.pdf Hashemi, Ali and Ahmad, Desa (2012) The effects of Comboplow on some soil physical properties of University Putra Malaysia Research Farm. In: International Conference on Agricultural and Food Engineering for Life (Cafei2012), 26-28 Nov. 2012, Palm Garden Hotel, Putrajaya. (pp. 72-80). http://cafei.upm.edu.my/download.php?filename=/TechnicalPapers/CAFEi2012_24.pdf
institution Universiti Putra Malaysia
building UPM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Putra Malaysia
content_source UPM Institutional Repository
url_provider http://psasir.upm.edu.my/
language English
description A disc plough combined with a set of rotary blades (Comboplow) for land preparation has been designed, fabricated and tested. The Comboplow includes two units of tillage tool comprising of a disc plough and several rotary blades. The disc plough cuts, partially or completely inverts a layer of soil to bury surface material. The soil in contact with the surface of disk would be cut and pulverized by the rotary blades. Multiple tillage operations are reduced to a single pass, resulting in a potential reduction of soil compaction, labour and fuel cost. The Comboplow was tested at Universiti Putra Research Farm having sandy clay loam soil texture. The treatments were three types of blades (straight type, curved and L- shaped ) and three rotary speeds (130, 147 and 165 rpm). The parameters measured were Mean Weight Diameter (dry basis), Mean Weight Diameter (wet basis), and soil bulk density. The mean weight diameters of the soil aggregates (dry basis) were 3.54, 3.28 and 3.12 mm at rotational blade speeds of 130, 147 and 165 rpm, respectively. The mean weight diameters of the soil aggregates (dry basis) were 3.21, 3.36 and 3.38 mm for the straight type blade, curved type blade and L-shaped blade, respectively. An increase in rotary speed reduced the mean weight diameter (dry basis). The mean weight diameters of soil aggregates (wet basis) were found to be 1.39, 1.66 and 1.73 mm at rotational speeds of 130, 147 and 165 rpm, respectively. The mean weight diameters of soil aggregates (wet basis) with the straight type blade, curved type blade and L-shaped blade were 1.63, 1.59 and 1.56 mm, respectively. An increase in the rotational speed from 130 to 165 rpm decreased the mean weight diameter (wet basis) by 0.34 mm. In comparison to the control treatment, the straight type blades, L-shaped blades and curved type blades decreased soil bulk density by 23.6%, 23.2% and 21.5%, respectively. The L-shaped blade had maximum and minimum values of percentage bulk density (dry basis) at rotary blade speeds of 165 and 130 rpm, respectively.
format Conference or Workshop Item
author Hashemi, Ali
Ahmad, Desa
spellingShingle Hashemi, Ali
Ahmad, Desa
The effects of Comboplow on some soil physical properties of University Putra Malaysia Research Farm
author_facet Hashemi, Ali
Ahmad, Desa
author_sort Hashemi, Ali
title The effects of Comboplow on some soil physical properties of University Putra Malaysia Research Farm
title_short The effects of Comboplow on some soil physical properties of University Putra Malaysia Research Farm
title_full The effects of Comboplow on some soil physical properties of University Putra Malaysia Research Farm
title_fullStr The effects of Comboplow on some soil physical properties of University Putra Malaysia Research Farm
title_full_unstemmed The effects of Comboplow on some soil physical properties of University Putra Malaysia Research Farm
title_sort effects of comboplow on some soil physical properties of university putra malaysia research farm
publisher Faculty of Engineering, Universiti Putra Malaysia
publishDate 2012
url http://psasir.upm.edu.my/id/eprint/50652/1/_TechnicalPapers_CAFEi2012_24.pdf
http://psasir.upm.edu.my/id/eprint/50652/
http://cafei.upm.edu.my/download.php?filename=/TechnicalPapers/CAFEi2012_24.pdf
_version_ 1643834726267486208
score 13.211869

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