Banca de DEFESA: JOSÉ HENRIQUE DE SOUZA JUNIOR

Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.
STUDENT : JOSÉ HENRIQUE DE SOUZA JUNIOR
DATE: 31/07/2023
TIME: 14:00
LOCAL: Sala de aula do PPGPA
TITLE:

EFFECT OF BIOCHAR ON SOIL ATTRIBUTES AND PRODUCTIVITY OF WINE GRAPES IN AGRESTE DE PERNAMBUCO

KEY WORDS:

Biochar, Viticulture, Yield

PAGES: 60
BIG AREA: Ciências Agrárias
AREA: Agronomia
SUBÁREA: Ciência do Solo
SPECIALTY: Física do Solo
SUMMARY:

The production of grapes in regions of altitude has different characteristics from those grown in other regions of the country. In the Agreste Meridional region of Pernambuco, the municipalities of Brejão and Garanhuns have climatic aptitude for the cultivation of wine vines. However, the soils in this region are generally acidic, with low natural fertility and low water retention capacity, making it necessary to adopt management practices that reduce acidity and increase water retention in these soils. In this sense, research has been using biochar as a soil conditioner. From the above, the objective of the present work was to evaluate the effect of biochar on the physical and chemical attributes of the soil, as well as on the production of wine grape varieties cultivated in the municipality of Garanhuns (PE). The work was carried out under field conditions, at the Vale das Colinas winery, in Garanhuns, PE. The objective of the present work was to evaluate the effect of biochar on the physical and chemical attributes of the soil, as well as on the production of wine grape varieties cultivated in the municipality of Garanhuns (PE). The work was carried out under field conditions, at the Vale das Colinas winery, in Garanhuns, PE. The biochar was produced from cashew wood, through the pyrolysis process. The experiment consisted of three cultivated areas with the varieties: Cabernet Sauvignon, Malbec and Muscat, and four doses of biochar: 0, 5, 10 and 20 t ha^-1, being evaluated two cycles. After harvesting the vines, soil samples were collected to assess the chemical and physical attributes of the soil. In addition to soil attributes, the following variables were evaluated in the vines: sprouting (BRO), fertility (FER), number of bunches (N.CA), productivity (PRO) and the physical characteristics of bunches and berries, and in fruits chemical characteristics were also evaluated. Regarding the chemical attributes of the soil, it was verified, for the first cycle of the three grape varieties, an increase in the pH and in the availability of nutrients (P, K, TOC, S and Na). Regarding the physical attributes, there was a reduction in soil bulk density and an increase in porosity between doses of 5 and 10 t ha_1. The positive influence of biochar on soil attributes promoted an increase in crop productivity, with the exception of the Muscat variety. In the second cycle, it was observed that the biochar doses raised the pH above 7.0, which may have contributed to the reduction of grapevine productivity. In general, the biochar doses of 5 and 10 t ha-1 were the ones that presented the best results in terms of soil attributes and grapevine productivity.

COMMITTEE MEMBERS:
Presidente - JOSE ROMUALDO DE SOUSA LIMA
Externa ao Programa - ***.352.124-** - MARIA CAMILA DE BARROS SILVA - UFRPE
Externa à Instituição - JAMILLY ALVES DE BARROS