SOIL 3600 Lecture Notes - Lecture 28: Gilgai, Deccan Plateau, Vertisol
13 Dec 2017
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See a difference of raised boundaries - 15 cm/6 inches high. If cannot see: during rainy period, observe ponding: depth of pond is about 6 inches. In aerial view - polygons: trick map: in india, deccan plateau, heavy clay texture, rectangular depressions. Is not a vertisol: artificial padi fields - not gilgai, rice production, why not natural gilgais, 2 reasons, padi fields, clay in deccan plateau mainly kaolinite, 1:1, not montmorillonite. Podzolization and podsols: podzolc b horizons (1 or more, how to recogonize, dominant accumulation product is amorphous, non-crystalline (no shape) material composed mainly of humified organic matter combined with varying degrees of. If aluminum and iron were not combined with humus - would exist as pure oxides: pure oxides are crystalline - have structure. In this case, since combined - amorphous: typically coarse to medium texture, acidic parent material, under forests (usually fine, profile:
