Recovery of hardpan «cangahua» soils: experience in Chimborazo and new conservation perspectives
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Abstract
Chimborazo is one of the poorest provinces in Ecuador, 6.30% of its territory is hardpan «cangahua» soils, which corresponds to 82,778.05 ha. The cangahuas are sterile volcanic tuffs, their rehabilitation and management present several environmental, social and economic challenges that considerably slow down agricultural development. The recovery of the cangahuas opens the possibility of revitalizing depressed agriculture. The experience of restoring eroded and degraded soils through physical and biological systems carried out in 3 cantons and 10 communities of Chimborazo allowed the recovery of 79.15 ha for agricultural production. Through soil plowing, incorporation of green manures, delivery of native plants and ongoing technical assistance and training. This allowed the soil organic matter to increase from 1.7% to 1.91% in recovered soil, also increased the economic income of 438 producers by an average of 10.12%.
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