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High-Energy-Moisture-Characteristic Aggregate Stability as a Predictor for Seal Formation

Institute of Soil, Water, and Environmental Sciences, Agricultural Research Organization (ARO), The Volcani Center, P.O. Box 6, Bet-Dagan 50-250, Israel

View larger version (24K): [in a new window]   Fig. 1. Schematic presentation of (a) moisture release, and (b) specific water capacity curves for fast and slow wetting. The dashed line in the specific water capacity curve represents soil shrinkage line for slow wetting.

View larger version (25K): [in a new window]   Fig. 2. Relation between volume of drainable pores (VDP) ratio or stability ratio and (a) organic matter content, and (b) clay content for the 12 samples with low ESP.

View larger version (54K): [in a new window]   Fig. 3. Stability ratio as a function of exchangeable Na percentage (ESP) for the six soils having samples with three different sodicity levels. The soils are represented by their clay content. Bars indicate one standard deviation.

View larger version (14K): [in a new window]   Fig. 4. Relation between stability ratio and exchangeable Na percentage (ESP) for the soils with clay content 38%.