The concurrent effect of Vermicompost and unconventional water on soil physical properties

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MIRZAEI TAKHTGAHI HOSSEIN; GHAMARNIA HOOSHANG

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Journal: Journal of Water and Irrigation Management Year:2018 | Volume:7 | Issue:2 Page(s): 197-210

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Title

The concurrent effect of Vermicompost and unconventional water on soil physical properties

Author(s)

MIRZAEI TAKHTGAHI HOSSEIN | GHAMARNIA HOOSHANG | Issue Writer Certificate

Keywords

bulk densityQ1

field capacityQ2

practical densityQ2

saturated hydraulic conductivityQ2

soil moisture characteristic curveQ2

Abstract

This study was conducted to investigate the effect of vermicompost on soil physical properties in two treatments with three replications, by using of vermicompost and control treatment in two soil layers 30 and 60 cm under irrigation with unconventional water at Agricultural and Natural Resources Campus of Razi University in 2016. The effect of vermicompost on soil physical properties including bulk and practical density (ρ b and ρ a), porosity (n), saturated hydraulic conductivity (Ks), soil moisture characteristic curve, field capacity (θ FC), permanent wilting point (θ PWP) and available water (AW) were evaluated. The results showed that the use of vermicompost significantly increased soil hydraulic conductivity and permanent wilting point but did not have significant effect on the other properties. The vermicompost increased the saturation hydraulic conductivity in two layers as 22. 2% and 43. 5%, respectively and had a positive effect on soil moisture characteristic curve. Also, in vermicompost treatment, moisture content in the first and second layers increased at field capacity 21. 1 and 21. 5, at permanent wilting point 32 and 24 and at available moisture 9. 3% and 18. 6%, respectively. Vermicompost increased the bulk density of the first and second layers as 7. 3% and 7%, but reduced the practical density 2. 1 and 1. 2 and the soil porosity as 18. 9% and 18. 2%, compared to control treatment. Finally, the results showed that although vermicompost statistically did not change more soil physical properties but in general improved soil physical conditions.

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