Mapping of specific areas of management using clay fraction iron oxides in Oxisol under cultivation of sugar cane.

• Grant number: 12/20681-0
• Support Opportunities: Scholarships in Brazil - Post-Doctoral
• Start date: February 01, 2013
• End date: April 30, 2016
• Field of knowledge: Agronomical Sciences - Agronomy - Soil Science
• Principal Investigator: José Marques Júnior
• Grantee: Livia Arantes Camargo
• Host Institution: Faculdade de Ciências Agrárias e Veterinárias (FCAV). Universidade Estadual Paulista (UNESP). Campus de Jaboticabal. Jaboticabal , SP, Brazil
• Associated scholarship(s): 15/02164-6 - Mapping specific management areas using indirect methods in Oxisols under sugarcane crop, BE.EP.PD

Abstract

The present project aims to: a) assess the potential of using indirect techniques (diffuse reflectance spectroscopy, magnetic susceptibility and x-ray fluorescence) in the characterization of iron oxides, the physical, chemical and erosion factors soil b) the mapping of specific areas of management in commercial areas from pedotransfer functions using iron oxides c) assessing the accuracy of maps of soil attributes generated by pedotransfer functions using iron oxides. Two areas will be studied, a 500 and another 1000 hectares. In each area will be enclosed a transect and a sampling grid. Mineralogical, chemical, particle size, estimation of erosion, diffuse reflectance spectroscopy, magnetic susceptibility and fluorescence spectrometry of x-rays analyzes will be performed. All attributes will be submitted to the statistical and geostatistical analyzes to assess dependence and spatial variability and multiple regressions. Pedotransfer functions are calibrated and validated for prediction of soil attributes using mostly iron oxides as predictors. Maps using the values of predicted soil attributes in the two areas will be constructed and validated for accuracy.

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)

CAMARGO, L. A.; MARQUES, J.; PEREIRA, G. T.; ALLEONI, L. R. F.; BAHIA, A. S. R. DE S.; TEIXEIRA, D. DE B.. Pedotransfer functions to assess adsorbed phosphate using iron oxide content and magnetic susceptibility in an Oxisol. SOIL USE AND MANAGEMENT, v. 32, n. 2, p. 172-182, JUN 2016. (09/06834-5, 12/20681-0)

CAMARGO, LIVIA ARANTES; MARQUES JR, JOSE; BARRON, VIDAL; FERRACCIU ALLEONI, LUIS REYNALDO; PEREIRA, GENER TADEU; TEIXEIRA, DANIEL DE BORTOLI; RABELO DE SOUZA BAHIA, ANGELICA SANTOS. Predicting potentially toxic elements in tropical soils from iron oxides, magnetic susceptibility and diffuse reflectance spectra. CATENA, v. 165, p. 503-515, JUN 2018. (12/20681-0)

DEISE C. S. NOGUEIRA; CAROLINA FERNANDES; LUMA C. DE SOUZA; LÍVIA A. CAMARGO; ANTONIO S. FERRAUDO. EFFECTS OF CLAY FRACTION MINERALOGY ON PHYSICAL ATTRIBUTES OF A YELLOW ULTISOL TREATED WITH CHISELING. Engenharia Agrícola, v. 40, n. 4, p. 433-442, 2020-08-28. (14/14490-2, 12/20681-0)