Relationship between kaolinite and gibbsite and aggregate stability of an oxisol under sugarcane cultivation

• Grant number: 05/03972-7
• Support Opportunities: Scholarships in Brazil - Scientific Initiation
• Start date: February 01, 2006
• End date: January 31, 2008
• Field of knowledge: Agronomical Sciences - Agronomy - Soil Science
• Principal Investigator: José Marques Júnior
• Grantee: Renata Alves Horvat
• Host Institution: Faculdade de Ciências Agrárias e Veterinárias (FCAV). Universidade Estadual Paulista (UNESP). Campus de Jaboticabal. Jaboticabal , SP, Brazil

Abstract

In this work a relief will be identified and delineated in eutroférrico red latossolo with sugar cane crop culture. The aim is to study the kaolinite and gibbsite mineral clay fractions and these clay crystalinity, that are attributes of pedogenetic environment. The soils will be sampled in crossing points of georeferenced grid having 10 m regular intervals, in a 100 x 100 m area, totalizing 100 points. The soil samples in each grid point will be collected in two depths (0.20-0.40 m) and after laboratory analysis X-ray diffraction will be conducted. The results will be submitted to descriptive statistical analysis and geostatistics. Krigging graphs will be produced after that with all studied parameters.