Banca de QUALIFICAÇÃO: ANA CAROLINA FRANÇA BOGO

Uma banca de QUALIFICAÇÃO de MESTRADO foi cadastrada pelo programa.
DISCENTE : ANA CAROLINA FRANÇA BOGO
DATA : 20/02/2023
HORA: 08:00
LOCAL: Sala de vídeo conferência
TÍTULO:

EFFECTS OF SHADING BY PEQUIZEIRO (Caryocar brasiliense Camb.) ON SILVIPASTORAL SYSTEM IN MATOGROSSENSE AMAZON

PALAVRAS-CHAVES:

Pasture afforestation; thermal comfort, animal welfare, soil quality, nutrient cycling, litter

PÁGINAS: 62
GRANDE ÁREA: Ciências Agrárias
ÁREA: Agronomia
SUBÁREA: Ciência do Solo
ESPECIALIDADE: Manejo e Conservação do Solo
RESUMO:

Livestock is one of the most relevant productive activities for the composition of income in rural areas in Mato Grosso, especially for family farming, but it is also one of the main causes of deforestation and loss of biodiversity in agricultural frontier regions, such as the Portal Territory. from the Amazon. Silvopastoral systems (SSP) have been used in the region as alternative management practices to extensive livestock. For them to be efficient, it is important to know the characteristics and influences of the different individuals that make up systems, such as tree species. In this context, the present study aimed to understand the effects of pequi tree (Caryocar brasiliense Camb.) shading on thermal comfort conditions for cattle (chapter 1) and soil quality (chapter 2) in a silvopastoral system in Terra Nova do Norte/MT. Microclimatic data were collected weekly, such as air temperature, black globe temperature, and relative air humidity under shade from 10 selected pequi trees and compared with data under full sun. From these data, two thermal comfort indices were calculated: THI (temperature and humidity index) and ITGU (global temperature and humidity index). Regarding soil quality, pH, MO, macro and micronutrients were evaluated at two depths (0-20 and 20-40cm) as chemical attributes, texture, density, macro and microporosity, as physical attributes, and enzymatic activity of arylsulfatase, β -glucosidase and acid phosphatase as biological attributes. Data on temperature, humidity and electrical conductivity of the soil were also collected. All soil variables were collected under 3 shading conditions (under canopy, canopy edge and full sun). In addition, suspended collectors were installed on the 10 pequi trees selected to survey the monthly input and litter quality, correlating with data on thermal comfort and soil quality. The shading of the pequi tree provided better microclimatic conditions in the area, reducing the temperature of the air and the black globe, increasing the relative humidity, and consequently presenting better indices of thermal comfort for the cattle. Litter input did not influence these results. As for the soil, the chemical, physical and biological data were mostly better in full sun, indicating the pequi tree, under the conditions of this SSP, does not contribute to soil quality.

MEMBROS DA BANCA:
Presidente - 210865003 - GUSTAVO CAIONE
Interno - 255123001 - ALEXANDRE DE AZEVEDO OLIVAL
Interno - 117000004 - MARCO ANTONIO CAMILLO DE CARVALHO
Externo ao Programa - 132027001 - EDGLEY PEREIRA DA SILVA