López Martínez JD, C Vázquez Vázquez, E Salazar Sosa, R Zúñiga Tarango, HI Trejo Escareño
Phyton-International Journal of Experimental Botany, Vol.79, pp. 47-54, 2010, DOI:10.32604/phyton.2010.79.047
Abstract About 15% of the world surface is subjected to the effect of man activities. The main causes of land surface degradation are livestock production, deforestation and inadequate agricultural practices. In Mexico, little attention has been given to soil conservation as a non-renewable natural resource. This has been mainly degraded by excessive use of agricultural machinery. As a result, 64% of the national territory suffers some degree of deterioration. Comarca Lagunera, located between Coahuila and Durango states in Mexico, is the main milk production region. In this region, 900000 t of cow manure are produced annually.… More >
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