Banca de QUALIFICAÇÃO: EUDOCIO RAFAEL OTAVIO DA SILVA

Uma banca de QUALIFICAÇÃO de MESTRADO foi cadastrada pelo programa.
DISCENTE : EUDOCIO RAFAEL OTAVIO DA SILVA
DATA : 21/11/2019
HORA: 09:00
LOCAL: Departamento de Solos
TÍTULO:

Study of the spatial variability of organic fractions in soils cultivated with banana and tifton 85 in the 

PALAVRAS-CHAVES:

Humic substances, Geostatistics, Spatial dependence

PÁGINAS: 20
GRANDE ÁREA: Ciências Agrárias
ÁREA: Engenharia Agrícola
RESUMO:

In the Agrarian Sciences, geostatistical studies and georeferenced sampling strategies have been increasingly used in Precision Agriculture (PA). The PA focused on the study of soils is based on the determination of variability maps from the correlation of soil attributes, where they are used in decision making and management indications that improve soil quality. The Federal Rural University of Rio de Janeiro presents areas of organic production of banana cultivar 'BRS Princesa' (Musa spp.), Focused on the fruit sector, and Tifton 85, related to pasture production. Thus, the objective of this project is to evaluate the spatial variability of chemical, physical parameters and organic matter fractions in soils cultivated with banana cultivar 'BRS Princesa' and Tifton 85 and to characterize them in management zones. The experiment will be conducted at UFRRJ and will be divided into two parts, as collections will be performed and field information will be obtained from two distinct areas, one for Tifton 85 production and one for 'Princesa' organic banana production. In the experimental design for the Tifton 85 crop, the proposed sampling mesh in the area will be 50 points in an irregular mesh and deformed soil samples will be taken at two depths, 0-0.20 m and 0.20-0.40 m.

In the experimental design for banana production, 60 points will be collected in a regular mesh and at each sampling point, deformed soil samples will be taken at three depths for chemical analysis: 0-0.05 m, 0, 05-0.10 m and 0.10-0.20 m. In addition to the estimation of soil mechanical resistance to penetration at depths of 0.0-0.05 m, 0.05-0.10 m, 0.10-0.20 m, 0.20-0.30 m and 0, 30-0.40 m. After collection, the samples will be subjected to laboratory analysis: fertility, soil particle size composition, physical fractionation and chemical fractionation of the soil, as well as statistical, geostatistical, multivariate analysis, generation of variability maps and management zones. The results of this work are expected to obtain by geostatistical methods, the variability maps of chemical, physical parameters and fractions of soil organic matter and the determination of management zones, being possible to explain the productivity and spatial variability in the studied areas. In addition to understanding the behavior and dynamics of organic matter and soil nitrogen in the production area of Tifton 85 grass and 'Princesa' banana; To characterize and identify the specific chemical components of MOS and to describe the important MOS compartments in the cycling and nutrient release of these crops, hoping to improve the organo-mineral interactions and the impacts of agriculture on soil quality.

MEMBROS DA BANCA:
Presidente - 1060711 - MARCOS GERVASIO PEREIRA
Externo ao Programa - 2136627 - NIVALDO SCHULTZ
Externo ao Programa - 1978275 - EMANUEL JOSE GOMES DE ARAUJO