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Nature, properties, and composition of the sod soils of Azerbaidzhan

Nature, properties, and composition of the sod soils of Azerbaidzhan

Dokl. Akad. Nauk azerbaidzhan. SSR 14: 323-328

The absolute content of humus and humic acids gradually increases from the serozem (1) to dark chestnut (2), brown-forest chernozem-like (3), and chernozem leached (4) soils. The ratio between humic and fulvic acids in (4) and (3) is higher than that in (1) and (2). Decrease of this ratio in the upper layers of (4) may be explained by the leaching process provoked by abundant rainfall. The similar decrease in the ratio noticed in the lower horizons of (2) is caused by its salinity.

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