Sidneide Manfredini

Relief-Rock-Soil relationship in the transition of Atlantic Plateau to Peripheral Depression, Sao Paulo, Brazil

This paper presents an atlas of physical geography at a detailed scale for an area located between two large morphostructural units: the Atlantic Plateau, a crystalline shield of rough landforms, and the Peripheral Depression, a transition unit from Plateau to the Parana Sedimentary Basin, whose smooth landforms are generally sculpted over sedimentary terrain. The transition between these two land systems creates contrasting landforms as a function of bedrock structure and soil type. Smooth landforms underlain by sedimentary rocks and reddish clayey soils alternate with small hills with abrupt slopes sustained by igneous or metamorphic rocks. These soils, developed from weathering of siltstones can rapidly change to brownish and pale colors indicating leaching and weathering of stratified sandstones or massive structured quartzites. A geomorphopedological classification at 1:10,000 scale was performed initially by delimiting units according to landforms. Secondly, other themes were added by combining them with different types of rocks and soils. The geomorphological map was produced by using thematic maps including a topographic base map, hypsometric map, slope map and morphological map. Also the geological and pedological maps were created based on field data collection, morphological analysis of soil profiles and physical, chemical and mineralogical laboratory analysis. Finally, the geomorphopedological units were defined using all the mapped data. Each of these units has peculiar features concerning developed or undeveloped soil formation, with mineralogy and structure very often linked to underlying rock. The landform shape is either controlled by geologic structure or originated from weathering processes that make the relief flatter.

DESAFIOS DA PRODUÇÃO AGRÍCOLA CAMPONESA NOS ASSENTAMENTOS DE REFORMA AGRÁRIA Assentamento Milton Santos - Americana/SP

This article discusses the experience of extension in Agricultural Geography coordinated by Prof. Drs. Larissa Mies Bombardi and Sidneide Manfredini, together with a group of students of the Department of Geography at USP. This work aims at supporting agricultural practices and trading, beginning in Milton Santos settlement located between the cities of Americana and Cosmopolis - Sao Paulo. This settlement has singularities that impose as challenges to its effective deployment: Designed in the molds of Comuna da Terra, it is composed almost entirely by families of urban origins, it is located in a region specialized in sugar cane monoculture and it is located about 10km from the urban areas of municipalities that affect it (Americana, Cosmopolis e Paulinia). As they managed to add different skills to the group initially consisting solely of geographers, with students and teachers of Escola Superior de Agronomia Luiz de Queiroz, of the Sanitary Engineering at Escola Politecnica and the Faculdade de Arquitetura da USP, the project was widening and redirecting its initial objectives. The implementation of optimal farming systems, which constrain the effective implementation of the settlement, necessitates the recovery of peasant culture, especially over the factors which contribute to seizure and appropriation of the landscape as far as scientific knowledge embedded in technology to be employed, or limits imposed by the legislation concerning the environmental licensing of agrarian reform projects. The actions of this working group began swifting towards brokering the appropriation of such knowledge, a view of participatory management that will contribute to the structuring of the social fabric of the collective, leading the settlers to acknowledge themselves as the subjects in the production of this new space.