Banca de DEFESA: WESLEY GOIS PASSOS

Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.
STUDENT : WESLEY GOIS PASSOS
DATE: 23/02/2026
TIME: 10:00
LOCAL: Auditório do PPG Solos
TITLE:

Remineralizers and biofertilizers in organic vegetable production systems in the Agreste of Pernambuco.

KEY WORDS:

soil health. food and nutritional security. family farming. circular economy.

PAGES: 67
BIG AREA: Ciências Agrárias
AREA: Agronomia
SUBÁREA: Ciência do Solo
SPECIALTY: Microbiologia e Bioquímica do Solo
SUMMARY:

Vegetable production is essential for food and nutritional security but faces significant challenges associated with conventional agricultural practices, particularly the excessive use of chemical fertilizers. Although these inputs ensure high productivity, they have contributed to soil degradation, water pollution, greenhouse gas emissions, and nutritional erosion of food. These factors compromise crop quality, food quality, and the sustainability of agricultural systems. In this context, the use of biofertilizers and rock powders emerges as a sustainable alternative, promoting soil health, increasing nutrient availability, and enhancing crop resilience, while also contributing to waste recycling and sustainable resource management. Thus, the study aimed to evaluate and recommend sustainable agricultural practices focused on the use of biofertilizers and rock powders (mining co-products) in the organic production of vegetables in Chã Grande, Pernambuco, Brazil. The experiment was conducted on three properties managed by female farmers, using a randomized block design with a 3x3 factorial arrangement. An organic compost, a digestate from biogas production, and two types of mining co-products, characterized as amphibole and basalt, were tested. Under this context, four successive planting cycles were carried out, with the cultivation of American lettuce (Lactuca sativa L.), arugula (Eruca sativa L.), and coriander (Coriandrum sativum). Throughout the cycles, productivity, nutrient extraction by the crops, and soil attributes were estimated. The results indicated that organic inputs applied in isolation promoted the greatest short-term increases in productivity. In contrast, mining co-products, whether applied alone or in association with organic inputs, were strongly associated with increased soil respiratory activity and microbial growth, as well as with the reorganization of carbon among the different soil fractions. Furthermore, organo-mineral interactions promoted higher macronutrient contents in plant tissue and contributed to the formation of a more complex and functional soil–plant system. By promoting the use of sustainable inputs, this research aligns with the United Nations Sustainable Development Goals (SDGs), fostering food security, environmental conservation, and economic resilience.

COMMITTEE MEMBERS:
Presidente - ***.055.504-** - ANA DOLORES SANTIAGO DE FREITAS - UFRPE
Interna - ***.044.794-** - PAULA RENATA MUNIZ ARAÚJO - UFPE
Externa à Instituição - JUSCELIA DA SILVA FERREIRA - UFPE