Banca de DEFESA: SALATIEL EWEN BRAGA

Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.
STUDENT : SALATIEL EWEN BRAGA
DATE: 29/01/2024
TIME: 15:00
LOCAL: meet.google.com/rgc-myfk-dcg
TITLE:

Soil resistance to root penetration as an identifier of soil structural degradation

KEY WORDS:

Soil physics, Granulometric analysis, Multivariate analysis, Penetrometer.

PAGES: 60
BIG AREA: Engenharias
AREA: Engenharia Sanitária
SUMMARY:

We are currently facing a worrying increase in soil degradation worldwide. It is estimated that approximately one third of arable areas are already in an advanced state of degradation, especially due to compaction resulting from intensive agricultural practices. Soil compaction, resulting from anthropogenic actions, has a negative influence on root growth and the soil's physical properties, such as density, porosity and penetration resistance (PR), with one of the main effects being an increase in surface runoff and soil contamination. The main objective of this work was to evaluate the potential of soil resistance to root penetration as an indicator of degradation, establishing relationships with physical and water attributes. The specific objectives include determining RP in the laboratory, analyzing physical and water attributes and carrying out a multivariate analysis of the results. Soil quality is intrinsically linked to its functionality in ecosystems, both managed and natural. The two layers investigated in this study, the Ap and Bt horizons, showed Ksat, Dp, Ds and granulometric analysis values in line with the expectations established in the literature reviewed. In the surface layer of the soils in the study area, the values obtained do not present significant restrictions for root development in samples P1 and P2 at all the pressures evaluated. On the other hand, in soils P3 and P4, there was a slight resistance to penetration, especially at a pressure of 300 kPa. These findings corroborate the information found in the literature, reinforcing the consistency of the results obtained in this study in relation to the characteristics of permeability, soil density and particle size distribution.

COMMITTEE MEMBERS:
Externa ao Programa - 1312288 - CERES DUARTE GUEDES CABRAL DE ALMEIDA - nullPresidente - FERNANDO CARTAXO ROLIM NETO
Interno - MARCUS METRI CORREA