A5115600423- Legume Nitrogen Fixing Symbiosis
- Soil Carbon and Nitrogen Dynamics
- Nematode management and characterization studies
- Sugarcane Cultivation and Processing
- Soil Management and Crop Yield
- Plant-Microbe Interactions and Immunity
- Plant Stress Responses and Tolerance
- Geography and Environmental Studies
- Geochemistry and Elemental Analysis
- Soil Geostatistics and Mapping
- Invertebrate Taxonomy and Ecology
- Maternal and Neonatal Healthcare
- Agronomic Practices and Intercropping Systems
- Environmental and biological studies
- Silicon Effects in Agriculture
- Weed Control and Herbicide Applications
- Aluminum toxicity and tolerance in plants and animals
- Environmental remediation with nanomaterials
- Ruminant Nutrition and Digestive Physiology
- Biodiesel Production and Applications
- Environmental Sustainability and Education
- Sustainable Development and Environmental Policy
- Plant Parasitism and Resistance
- Plant Ecology and Soil Science
- Sunflower and Safflower Cultivation
Universidade Federal do Piauí
2022-2024
Universidade Federal do Maranhão
2014-2019
Amazon (United States)
2017
Geostatistics allows the evaluation of distribution pattern data with high spatial variability in agricultural systems. This study aimed to evaluate biological diversity indices soil fauna under different land (agriculture and forest). Samples were collected seven areas (millet, soybean, corn, eucalyptus, pasture crops, preserved disturbed Cerrado), Maranhão state, Brazil. The was caught trapped pitfall traps, installed 3 m away from each other. In area, 130 traps maintained for days. After...
AbstractMaranhão North Mesoregion has the highest demographic density of state because where is located capital, São Luís. The climate humid or sub-humid tropical with rainfall rates around 1,000 mm / year, and suffering, this way, mass influence air. coastal plain Maranhão subdivided into four geomorphological sectors: to west-northwest coast, which marked by State recesses, specifically maranhense Golfão; east coast dominate fields movable fixed dunes; eltaic Parnaíba River. This study...
The use of swine manure (SM) as a nutrient source for pastures is increasingly common in Brazil, due to its low cost.However, this practice can cause N losses agricultural soil, where ammonia (NH3) volatilization may be the main drawback, generating undesirable economic and environmental consequences.The objective study was evaluate SM application methods that retain within system determine how these affect forage yield quality.The conducted municipality Chapadinha, Maranhão, following were...
Durante 13 meses foram acompanhadas as mudanças sazonais dos eletrólitos cálcio (Ca), fosfatos (PO4), potássio (K), cloretos (Cl), cobre (Cu) e zinco (Zn) no sangue de 20 vacas "aneloradas" mantidas sob pastejo contínuo Brachiaria decumbens com alta taxa lotação. As apresentaram-se hipocalcêmicas hipofosfatêmicas durante praticamente todo o ano. Na primavera, a brotação pastos (novembro dezembro), em solo argiloso mais propensas à alcalose metabólica, caracterizada por hipocalemia...
Ruzigrass (Urochloa ruziziensis) is a widely cultivated plant alongside soybeans, particularly in integrated crop and livestock systems, due to its fast growth adaptability different conditions. This study aimed assess the impact of secondary metabolites found ethanolic extract from ruzigrass on soybean growth, nodulation, spectral responses, soil microbiological attributes. The presents total concentration flavonoids (852.5 µg g−1), including naringenin kaempferol. Increasing doses (100,...
This study evaluated the nutritional value of sugarcane varieties in relation to nitrogen fertilization. The studied were RB 863129, 867515, and 92579, fertilizer was applied at doses 0, 60, 80, 120, 140 kg N ha-1. experiment divided into two stages: i) Year I - plant cane, when yield quality three evaluated; ii) Years II III, effect fertilization on first second ratoon crops same evaluated. In cane (t ha-1) DM (dry matter) CP (crude protein) contents higher for 863129 variety. There no...
Part of the energy consumed in world comes from limited sources, which eventually are expected to be depleted. The search for alternative sources meet needs is crucial. Biodiesel derived vegetable oils and animal fats stands out as a biodegradable renewable source energy. Sunflower among top four oil crops produced worldwide, Brazil has high production potential this crop. This study aimed identify sunflower genotypes with highest biodiesel Pre-amazon region Brazil, where advance...
AbstractThe Mesoregion South Maranhense covers the 19 cities located at extreme south of Maranhão state and is geographically in three Microregions: The Chapada das Mangabeiras, Gerais de Balsas Porto Franco. climate semi-humid tropical humid type, Mangabeiras Franco respectively. Central Plateau Parnaíba basin, with elevated areas, hills occurrences, characterize relief. This work aimed to mesoregion State. predominant biome cerrado, small sized trees tortuous stems, featuring several Phyto...
SUMMARY: Sanitary sewage consists of a necessary service for quality life and promotion public health. In Brazil, the index households with adequate sanitary facilities is still low irrelevant in relation to demand country. This study aimed evaluate amount State Maranhão. For this, we used data from census Brazilian Institute Geography Statistics Municipal Health Department, collected 2000 2010. The analysis was performed by means descriptive statistics generation an isoline map using Surfer...
The occurrence of a high number fetal deaths is present throughout the world. It estimated that more than 2 million occur each year on globe, where 98% predominate in developing countries. This research aimed to carry out survey Maranhão state, as way bring contributions theprevention and health care actions. Data from DATASUS were used for occurring 217 municipalities state years 2000, 2010 2014, well mortality rate. program SURFER® version 11.0 usedfor descriptive statistics analysis...
A avaliacao dos impactos provocados pela agricultura e fundamental para o entendimento do nivel de sua sustentabilidade. Nesse contexto, indices sustentabilidade podem ser utilizados medicao, pois consistem em informacoes que facilitam a compreensao dados. Este trabalho teve como objetivo realizar uma prospeccao da utilizacao agricola apresentar visao geral das metodologias mais empregadas. Para isso, foram realizadas buscas sobre Indices Sustentabilidade aplicados Agricultura no banco...