Banca de QUALIFICAÇÃO: EDUARDO MEDEIROS DE OLIVEIRA

Uma banca de QUALIFICAÇÃO de DOUTORADO foi cadastrada pelo programa.
DISCENTE: EDUARDO MEDEIROS DE OLIVEIRA
DATA: 20/06/2024
HORA: 08:00
LOCAL: DCS02
TÍTULO:

Cover crop management systems improves soil quality and mitigate water
erosion in tropical olive orchards

PALAVRAS-CHAVES:

Integrated quality index; Nemoro quality index; Olea europaea L.; Soil health

PÁGINAS: 12
GRANDE ÁREA: Ciências Agrárias
ÁREA: Agronomia
SUBÁREA: Ciência do Solo
ESPECIALIDADE: Manejo e Conservação do Solo
RESUMO:

The production of olive trees in shallow soils in hillslopes requires adequate soil and water
conservation systems. In this context, soil use and management besides vegetation cover
contributes to better soil quality and the sustainability of the olive cultivation system. Thus,
the objective was to determine the physical and chemical properties that are indicative of soil
quality in areas of Dystrudepts, under different soil cover management systems in olive
cultivation in tropical region. Olive tree culture field experiment was established in 2015,
where soil was sampled over three years (2016, 2017 and 2021). The effect of five cover
management systems were compared for each agricultural year, namely BS: bare soil in
2015/2016, 2016/2017 and 2017/2021; OBS: olive trees on bare soil in 2015/2016, 2016/2017
and 2017/2021; OSV: olive trees intercropped with mowed spontaneous vegetation in
2015/2016, 2016/2017 and 2017/2021; OJB: olive trees intercropped with jack beans
(Canavalia ensiformis L.) in 2015/2016 and 2016/2017, and olive trees crowned intercropped
with mowed spontaneous vegetation in 2017/2021; OMI: olive trees intercropped with millet
(Pennisetum glaucum L.) in 2015/2016, olive trees intercropped with sunn hemp (Crotalaria
juncea L.) in 2015/2017 and olive trees with spontaneous vegetations treated with herbicide
(Roundup) in 2017/2021. The soil quality indices (SQI) proved to be sensitive to variations in
different types of soil management from the second year of assessment, regarding water
erosion. OSV and OJB showed the highest SQI, while OBS showed the lowest values. The SQI
demonstrated an inverse correlation with soil and water losses starting from the second year
of assessment. This highlights its efficacy in assessment the effects of adopted management on
soil quality in the context of water erosion. Moreover, it reinforces the importance of
vegetation cover in maintaining soil fertility, resulting in increase of soil organic matter and
improving the structuring of Dystrudepts. The attributes that most correlated with the SQI
were soil organic matter, effective cation exchange capacity, sum of bases, geometric mean
diameter of aggregates, pH and unsaturated soil hydraulic conductivity. These attributes
collectively provide valuable in­sights into soil health and water erosion susceptibility within
the olive tree production system.

MEMBROS DA BANCA:
Externo ao Programa - PEDRO MARANHA PECHE - DAG/ESAL (Membro)
Interno - MARIA LIGIA DE SOUZA SILVA (Membro)
Interno - MARCO AURELIO CARBONE CARNEIRO (Membro)
Externo à Instituição - FÁBIO AURÉLIO DIAS MARTINS - EPAMIG (Membro)
Externo ao Programa - FELIPE SCHWERZ - DEA/EENG (Suplente)
Interno - FELIPE HAENEL GOMES (Membro)