Iron oxides characterization of oxisol clay fraction in areas with different harvesting systems in Jaboticabal region, SP

• Grant number: 07/08457-9
• Support Opportunities: Scholarships abroad - Research
• Start date: April 01, 2008
• End date: June 30, 2008
• Field of knowledge: Agronomical Sciences - Agronomy - Soil Science
• Principal Investigator: José Marques Júnior
• Grantee: José Marques Júnior
• Host Investigator: José Torrent
• Host Institution: Faculdade de Ciências Agrárias e Veterinárias (FCAV). Universidade Estadual Paulista (UNESP). Campus de Jaboticabal. Jaboticabal , SP, Brazil
• Institution abroad: Universidad de Córdoba (UCO), Spain

Abstract

In order to evaluate the effects of sugarcane harvesting systems in the evolution of the mineralogical properties and their relations with the chemicals properties, the soil will be sampled at the intersection point of two georeferenced grid with dimensions of 100 x 100 m, and regular intervals of 10 m within samples points, for 121 points in each grid. The samples will be submitted to the laboratory standard tests and the data will be analized by the descriptive statistics and calculating the average, median, variance, standard deviation, skewness, kurtosis, maximum, minimum, coefficient of correlation, and distribution type. The spatial dependence analysis will be made with geostatistics methods, using the semivariograms. Interpolated values through kriging will be used, together with the measured values, for the maps construction of the properties studied. (AU)

Scientific publications

(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)

MARQUES, JR., J.; SIQUEIRA, D. S.; CAMARGO, L. A.; TEIXEIRA, D. D. B.; BARRON, V.; TORRENT, J.. Magnetic susceptibility and diffuse reflectance spectroscopy to characterize the spatial variability of soil properties in a Brazilian Haplustalf. Geoderma, v. 219, p. 63-71, MAY 2014. (07/08457-9)