Comparação de penetrômetros e identificação de fatores na resistência mecânica do solo à penetração via modelos mistos

Abstract

It is common knowledge that one of the main sources of the Brazilian economy is attributed to agriculture. In Brazil, agriculture is a competitive field, being a very rich and diversified economic sector, as well as a source of food and job creation among Brazilians. For agriculture, the main raw material is the soil, which is essential for the development of crops, and therefore, it is vital to take care of this resource. One of the most commonly used techniques for soil assessment is to verify its mechanical resistance to penetration. This technique is preferred for the analysis process due to its quick verification and easy handling of the tool used: the penetrometer. In this work, through the mixed regression model, we compared the efficiency of different types of penetrometers and also analyzed characteristics and factors that may influence the mechanical resistance of soil to penetration using a set of real data from LAMAP, USP.