Variation in the chemical and physical properties of the soil and in the organic matter in agroecosystems of Western Amazonia, Amazonia region

• Grant number: 00/05810-0
• Support Opportunities: Regular Research Grants
• Start date: August 01, 2000
• End date: July 31, 2002
• Field of knowledge: Agronomical Sciences - Agronomy - Soil Science
• Principal Investigator: Euripedes Malavolta
• Grantee: Euripedes Malavolta
• Host Institution: Centro de Energia Nuclear na Agricultura (CENA). Universidade de São Paulo (USP). Piracicaba , SP, Brazil

Abstract

The studies will be carried out in three chronosequences (forest-brushwood-cassava, forest-cupuassu plantation with the use of agricultural tools) found in the region of Manaus, located in Western Amazonia. The objective of this work is to ascertain the effect of deforestation on the dynamic of the organic matter and on the chemical and physical properties of the soil, when substituted by two different types of management (introduction of an annual crop, cassava, and another by a perennial crop, cupuassu plantation). The studies will be undertaken in the experimental stations of Embrapa Western Amazonia and in areas of producers in the region. (AU)