Banca de DEFESA: RAFAELA DA CONCEIÇÃO SANTOS

Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.
STUDENT : RAFAELA DA CONCEIÇÃO SANTOS
DATE: 28/07/2022
TIME: 09:00
LOCAL: sala 37 do PPGPA
TITLE:

EFFECT OF SEWAGE SLUDGE BIOCHAR ON SOIL CHARACTERISTICS AND BEANS PRODUCTIVITY

KEY WORDS:

soil conditioner; pyrolysis; sewage sludge

PAGES: 66
BIG AREA: Ciências Agrárias
AREA: Agronomia
SUBÁREA: Ciência do Solo
SUMMARY:

The term biochar is conceptualized from the knowledge of the Terras Pretas dos Índios. It is a solid material rich in carbon, which has been used as a soil conditioner, aiming to improve its characteristics. The use of sewage sludge for the production of biochar has been a viable alternative to manage this residue. The objective of the present study was to evaluate the impact of sewage sludge biochar on chemical and physical soil characteristics and bean productivity. The experiment was carried out in a greenhouse, in a randomized block design (CBD), using eight treatments, which consisted of four doses of biochar (0, 10, 20 and 40 t ha ¹), in the presence or absence of a chicken manure dose (6 t ha¹), with four replications. Two soils were used in the experiment classified as Argissolo Vermelho Amarelo and Neossolo Regolitico. The effects of treatments on soils were evaluated through chemical analysis (pH, P, K, organic carbon, N and (C/N), soil physical (soil density, total porosity, field capacity, wilting point) and available water), evapotranspiration (ET) and water use efficiency (EUA) were also evaluated by the relationship between crop productivity and evapotranspiration (ET). There was a significant effect of biochar in combination with chicken manure on soil pH, in addition, it provided an increase in phosphorus availability in both soils. No changes were observed in the physical characteristics of the soil in any treatment, for the Red Yellow Argisol and Regolithic Neosol. However, there was an increase in productivity for the Red Yellow Argisol compared to the control, while for the Regolitico Neosol, no difference in productivity was observed for all treatments. The results indicate a great potential for the application of BLE to improve soil qualities and promote improvements in chemical and physical characteristics, and bean productivity. However, it can be said that BLE has different effects depending on the soil in which it is applied, contributing to the improvement of agricultural soil fertility.

BANKING MEMBERS:
Presidente - 2578994 - JOSE ROMUALDO DE SOUSA LIMA
Interno - 1549250 - ALEXANDRE TAVARES DA ROCHA
Externo à Instituição - ARGEMIRO PEREIRA MARTINS FILHO