Indurated soils, called tepetates by the farmers, can be seen in the region of Xalapa, Veracruz, Mexico. They are located in the lower part of a topoclimatic sequence of soils developed on volcanic materials. This sequence, located on the slope of the Cofre de Perote volcano toward the Gulf of Mexico, stars at an altitude of 3,500 m. with a success...
Les tepetates, matériaux d'origine volcanique indurés et stériles, localisés le long de l'axe néovolcanique mexicain, sont une contrainte pour l'agriculture. Leur présence est liée à un contexte à la fois environnemental et socio-économique. Dans un but d'aider à la mise en place future d'un programme de réhabilitation de ces sols et de protection ...
The purpose of this study is to precise the conditions of agricultural reclamation of tepetate in the eastern part of the Mexico valley (Texcoco). The Tepetate is a compact and sterile material. The lack of nitrogen, carbon and the poor biological activity limit the possibility of plant development. But after the use of heavy machinery and terracin...
Because of the imprecision of the known surface and the real distribution of the tepetates along the neovolcanic belt, as well as the agro-socio-economical problems that cause the presence of this volcanic indurated level in the fields, we proposed to test a methodology which uses both teledetection and GIS on 1/25,000 scale to identify the area wi...
The tepetates of Mexico Highlands are indurated horizons with fragipan pr0perties. Tepetates appear among pyroclastic deposits (T1, T2, T3). A soil profile located near Texcoco, Mexico, including tepetate layers was studied. Mineralogical and microscopical features of this profile were studied using a series of methods. This report the main results...
In Mexico, there is very few informations about the soil surface crusting in relation to the rain. When creating a new soil from a indurated volcanic tuff, it is important to study the behaviour and dynamics of the new structure under the action of rain and cultivation practices. We followed 6 terraces during 3 years on different kinds of soil and ...
In the UE-ORSTOM-CP-UAT-UG research program about rehabilitation of Mexican tepetates, one of the problems is to control soil erosion and productivity of these new soils. The caracterization of rainfall in relation to its occurence, quantity, energy, etc. is fundamental. This paper shows the results of the analysis of 4 years of precipitations meas...
The reclamation of volcanic indurated soils called tepetates in Mexico must control soil erosion and generate a good productivity of these new soils according to a sustainable development strategy. This paper shows the results of an european research program involving ORSTOM and the Colegio de Postgraduados en Agrociencias in the eastern part of va...
