Effect of Soil Management and Its Texture on Aggregate Stability Parameters and Wetting Rate

Nedawi, Dakhil R.

doi:10.36531/ijds.2022.174583

	Effect of Soil Management and Its Texture on Aggregate Stability Parameters and Wetting Rate
IRAQI JOURNAL OF DESERT STUDIES
Article 8, Volume 12, Issue 1, 2022, Pages 79-89 PDF (530.24 K)
Document Type: Research Paper
DOI: 10.36531/ijds.2022.174583
Author
Dakhil R. Nedawi^*
Soil Science and Water Resources Department, College of Agriculture, University of Basra, Iraq
Abstract
The present study was carried out to evaluate the soil management and soil texture on the structure parameters and soil water wetting rate. Six soil samples of 0-30 cm depth were selected from three different sites in the texture of Clay, loam and Sandy loam in Basra Governorate (Abi Al-Khasib, Madinah and Zubair). Three samples represented the treatment of soil management (soil cultivated with alfalfa crop for 7 years respectively). The other three samples were from the same sites for uncultivated soil (bare soil), with three replicates for each sample. Soil organic matter content, bulk density, mean weight diameter, aggregate stability percentage and water wetting rate were measured. The results showed that the soil management factor had a highly significant effect in raising the values of OM, MWD and WSA%. It was as a general average of 56.337 gm.Kg^-1, 0.893 mm,71.33%, respectively, and on the other hand, soil management led to a decrease in the values of 𝛒𝐛 (1.38 Mgm.Kg^-1) and WR (0.2522 cm³3gm^-1 min^-1), and its rise in uncultivated soil of 1.51 Mgm.Kg^-1, 0.3989 cm³3gm^-1 min^-1, respectively. While the soil texture factor effect that the clay texture had the highest values as the average of OM (34.71 gm.Kg^-1), MWD (0.8 mm) and WSA (62.67%), followed by loam and sandy loam, respectively. While a decrease in the values of 𝛒𝐛 (1.325 Mgm.Kg^-1 ) and WR (0.265 cm³3gm^-1 min^-1) in Clay soil with a significant difference compared to loam and sandy loam soil, and the interaction between the soil management factor and the increase in its content of silt and clay led to an improvement the soil properties.
Keywords
soil management; mean weight diameter; aggregate stability percentage; water wetting rate

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