Tractor wheel compaction effect on soil water infiltration hydraulic conductivity and bulk density

Ramezani Nooshin, . and Sayyad G. Abbas, . and Barzegar A. Rahman, . Tractor wheel compaction effect on soil water infiltration hydraulic conductivity and bulk density. pp. 47-61. ISSN 1394-7990

Soil compaction alters the soil pore system and may adversely affect the availability of water and air to plants and microorganisms. This study was conducted on a loamy soil to investigate water flow path using dye patterns. Five treatments were compared: control (no traffic) single two four and eight passages in three replications in the field. A dye tracer of Brilliant Blue FCF solution was uniformly added to each treatment for eight hours at a rate of 5 mm/h using a rain simulator. Flow paths were photographed with a digital camera. The images were processed by digital image analysis in order to analyse the spatial distribution of the stained area. Results indicated that induced compaction significantly altered the hydraulic properties of the soil. Highest impact was observed at 0-20 cm soil depth; no visible changes were observed in soil physical properties for subsoil. Results also showed that stained area as index of water infiltration was reduced by 77.5 in eight times passages treatment compared to control. Dye infiltration was uniform in control treatment while in the four and eight times tractor traffic treatments dye infiltration was low on the surface and preferential flow of dye was observed in deeper parts of the profile.

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Abstract

Soil compaction alters the soil pore system and may adversely affect the availability of water and air to plants and microorganisms. This study was conducted on a loamy soil to investigate water flow path using dye patterns. Five treatments were compared: control (no traffic) single two four and eight passages in three replications in the field. A dye tracer of Brilliant Blue FCF solution was uniformly added to each treatment for eight hours at a rate of 5 mm/h using a rain simulator. Flow paths were photographed with a digital camera. The images were processed by digital image analysis in order to analyse the spatial distribution of the stained area. Results indicated that induced compaction significantly altered the hydraulic properties of the soil. Highest impact was observed at 0-20 cm soil depth; no visible changes were observed in soil physical properties for subsoil. Results also showed that stained area as index of water infiltration was reduced by 77.5 in eight times passages treatment compared to control. Dye infiltration was uniform in control treatment while in the four and eight times tractor traffic treatments dye infiltration was low on the surface and preferential flow of dye was observed in deeper parts of the profile.

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Item Type:	Article
AGROVOC Term:	Soil compaction
AGROVOC Term:	Infiltration
AGROVOC Term:	Hydraulic conductivity
AGROVOC Term:	Loam soils
AGROVOC Term:	Soil physical properties
AGROVOC Term:	Soil density
AGROVOC Term:	Soil moisture
AGROVOC Term:	Soil profiles
AGROVOC Term:	Simulated rainfall
AGROVOC Term:	Image analysis
Depositing User:	Mr. AFANDI ABDUL MALEK
Last Modified:	24 Apr 2025 00:53
URI:	http://webagris.upm.edu.my/id/eprint/7751

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