Dissertations and Theses

Summary

The lack of detailed information on soil resources is a limiting factor for the growth of different areas of knowledge and productive sectors. The ladforms when properly characterized may be indicators of pedogenetic processes that influence the variability of soil properties and the response of agricultural crops. In this context, this work aims to identify areas with different production potential and quality of sugarcane in different landforms characterized by morphometric signature, magnetic susceptibility and thickness of horizons A+E in Hapludalf originated Sandstone. Based on the characterization of a pilot area of 200 ha, 100 ha convex shape and 100 ha in the summons form, was set greater area of 100,000 ha. Were randomly chosen on this greater area 15 concave and convex forms, with same geology, geomorphology and soil the control area. Were determined magnetic susceptibility (MS) in low frequency and thickness of horizons A+E. We also assessed the history of seven years (2008 to 2014) the production of sugarcane in tonnes of stems ha-1 (TCH) and quality of raw material, expressed in Pol. The results show that MS and morphometric signature were effective in identifying areas with potential for cultivation of sugarcane and may help manage the a more homogeneous areas for standardization of quality of raw material. Even with interference from other sources of variability such as attack by pests and weeds, for example, the response model of sugarcane as a function of landforms has accuracy of 55% for yield (TCH) and 64% Pol in compared the pilot area.