Root System and Its Relations with Soil Physical and Chemical Attributes in Orange Culture

Citrus companies have sought and developed alternative systems of tillage or implanting orchards so as not to significantly alter the physical chemical attributes soil and, consequently, root development plants. Therefore, aim this study was identify that most influence volume orange crop in different systems. The experiment carried out region Avaré, state São Paulo, Brazil, Utissol Oxisol. For planting crop, following tillages were made: minimum tillage, subsoiler using a triple implement. evaluated bulk density, macroporosity, microporosity, total porosity, moisture, mean weight-diameter, resistance penetration, sum bases, cation exchange capacity, base saturation, pH, exchangeable cations, potential acidity, available phosphorus, analysis micronutrients such copper, iron, manganese zinc, organic carbon content. system SIARCS® software. data classification, mining techniques used attribute selection decision tree induction. Regardless type, use operation implement provided greater for Utisol area, pH value 4.2 main high volume. Oxisol, presence levels did generate toxicity plants, crop.