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Water Quality: Improving Water Quality Utilizing Hemp
2017
Journal of Agriculture and Environmental Sciences
This study examined the contrasting physical and chemical properties of allophanic and non-allophanic horizons in Japanese volcanic ash soils described in the Soil Survey Data Book before Land Reclamation. A total of 1133 investigation points and 4462 soil horizons from Tohoku District were divided into two groups based on their exchange acidity y1:allophanic horizonsy1< 6 and non-allophanic horizonsy1> 6. Volcanic ash soils from Tohoku District were characterized as dark, weakly adherent,
doi:10.15640/jaes.v6n2a2
fatcat:mjz72w4qmrbipeoiyjve5f6eoe