Fernando Bezerra Lopes
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View article: Frequency, Spatial Distribution, and Influence of Consecutive Dry Days on Rainfed Agriculture
Frequency, Spatial Distribution, and Influence of Consecutive Dry Days on Rainfed Agriculture Open
Given the climate variability of semi-arid regions, this study analysed rainfall regimes and their influence on consecutive dry days (CDDs) and cowpea (Vigna unguiculata) productivity in Ceará, Brazil. Rainfall data from 184 municipalities…
View article: A bio-optical database for the remote sensing of water quality in BRAZil coAstal and inland waters (BRAZA)
A bio-optical database for the remote sensing of water quality in BRAZil coAstal and inland waters (BRAZA) Open
View article: Effects of floating macrophytes on open-water evaporation in a Brazilian tropical reservoir
Effects of floating macrophytes on open-water evaporation in a Brazilian tropical reservoir Open
View article: Irrigation with brackish water in the production of maize intercropped with peanut
Irrigation with brackish water in the production of maize intercropped with peanut Open
Integrating agricultural species with different tolerance levels to saline stress may be a promising strategy for biosaline agriculture. This study evaluates the agronomic performance of maize crops irrigated with brackish water and produc…
View article: Impact of Permanent Preservation Areas on Water Quality in a Semi-Arid Watershed
Impact of Permanent Preservation Areas on Water Quality in a Semi-Arid Watershed Open
Water is scarce in semi-arid regions due to environmental limitations; this situation is aggravated by changes in land use and land cover (LULC). In this respect, the basic ecological functions of Permanent Preservation Areas (PPAs) help t…
View article: A Handheld Multispectral Device for Assessing Leaf Nitrogen Concentrations in Maize
A Handheld Multispectral Device for Assessing Leaf Nitrogen Concentrations in Maize Open
This study presents the MSPAT (Multispectral Soil Plant Analysis Tool), a device designed for assessing leaf nitrogen concentrations in maize crops under field conditions. The MSPAT includes the AS7265x sensor, which has 18 bands and cover…
View article: Determination of the Total Phosphorus Decay Coefficient Based on Hydrological Models in an Artificial Reservoir in the Brazilian Semi-Arid Region
Determination of the Total Phosphorus Decay Coefficient Based on Hydrological Models in an Artificial Reservoir in the Brazilian Semi-Arid Region Open
Phosphorus input into surface water is a global concern due to its role in eutrophication, which is especially critical in semi-arid regions with their challenging climatic conditions. This study evaluated the best model for estimating the…
View article: USE OF THE IDW INTERPOLATION METHOD FOR THE MAPPING OF FLOW AND ELECTRICAL CONDUCTIVITY OF GROUNDWATER IN THE STATE OF CEARÁ
USE OF THE IDW INTERPOLATION METHOD FOR THE MAPPING OF FLOW AND ELECTRICAL CONDUCTIVITY OF GROUNDWATER IN THE STATE OF CEARÁ Open
Water scarcity in semiarid regions requires the efficient management of groundwater for population growth and regional development. Evaluating the flow rate variability and electrical conductivity (EC) of deep wells is crucial because thes…
View article: ASPECTOS EPIDEMIOLÓGICOS E CUSTOS HOSPITALARES DAS INTERNAÇÕES POR DOENÇA DE ALZHEIMER NO BRASIL
ASPECTOS EPIDEMIOLÓGICOS E CUSTOS HOSPITALARES DAS INTERNAÇÕES POR DOENÇA DE ALZHEIMER NO BRASIL Open
Introdução: A Doença de Alzheimer é uma enfermidade degenerativa e progressiva que atua no sistema nervoso central. Ela acomete cerca de 10% das pessoas acima de 60 anos e 40% das pessoas com mais de 80 anos e suas complicações podem levar…
View article: Deficit Irrigation of Forage Cactus (Opuntia stricta) with Brackish Water: Impacts on Growth, Productivity, and Economic Viability under Evapotranspiration-Based Management
Deficit Irrigation of Forage Cactus (Opuntia stricta) with Brackish Water: Impacts on Growth, Productivity, and Economic Viability under Evapotranspiration-Based Management Open
Climate change significantly impacts agriculture and forage production, requiring the implementation of strategies toward increased water and energy use efficiency. So, this study investigated the yield of forage cactus (Opuntia stricta (H…
View article: Efficiency of Nitrogen Fertilization in Millet Irrigated with Brackish Water
Efficiency of Nitrogen Fertilization in Millet Irrigated with Brackish Water Open
Nitrogen fertilization can provide greater nutritional support and mitigate salt stress in the millet crop. The aim of this study was to evaluate the physiological responses and agronomic performance of millet crop subjected to nitrogen fe…
View article: Determinantes do regime pluviométrico no Semiárido Cearense (1990 – 2019)
Determinantes do regime pluviométrico no Semiárido Cearense (1990 – 2019) Open
O semiárido brasileiro apresenta regime pluviométrico instável e caracteriza-se pela presença de cenários hídricos que variam de muito seco a muito chuvoso. Portanto, a definição dos determinantes essenciais para cada cenário hídrico corro…
View article: Efficiency of Nitrogen Fertilization in Millet Irrigated with Brackish Water
Efficiency of Nitrogen Fertilization in Millet Irrigated with Brackish Water Open
Nitrogen fertilization can provide greater nutritional support and mitigate salt stress in the millet crop. The aim of this study was to evaluate the physiological responses and agronomic performance of millet crops subjected to nitrogen f…
View article: Phosphate fertilization, biofertilizer and Bacillus sp. in peanut cultivation under salt stress
Phosphate fertilization, biofertilizer and Bacillus sp. in peanut cultivation under salt stress Open
Peanut (Arachis hypogaea) is an important agricultural crop in Brazil, considered one of the most important oilseed crops cultivated. The use of fertilizer-solubilizing bacteria can mitigate salt stress. The objective of this study was to …
View article: Use of algae extract as an agent to mitigate salt stress in sunflower crop
Use of algae extract as an agent to mitigate salt stress in sunflower crop Open
For the use of saline waters in agriculture to be a viable option, solutions must be adopted to mitigate the impacts caused by these waters. In this context, the present study aimed to evaluate the foliar application of algae (Ascophyllum …
View article: Irrigation strategies with brackish water in the cultivation of Italian zucchini under potassium fertilization
Irrigation strategies with brackish water in the cultivation of Italian zucchini under potassium fertilization Open
Zucchini may present different responses to the presence of salts in its phenological phases, and the supply of potassium can interfere with assimilate allocation dynamics, maximizing production. In this context, the aim of this study was …
View article: How Forest Management with Clear-Cutting Affects the Regeneration, Diversity and Structure of a Seasonally Dry Tropical Forest in Brazil
How Forest Management with Clear-Cutting Affects the Regeneration, Diversity and Structure of a Seasonally Dry Tropical Forest in Brazil Open
In Brazil, logging in the Seasonally Dry Tropical Forest (SDTF) under management plans that include clear-cutting has increased in recent decades, and the structure, composition, diversity and functioning of the forest likely must have bee…
View article: Potential of Brackish Groundwater for Different Biosaline Agriculture Systems in the Brazilian Semi-Arid Region
Potential of Brackish Groundwater for Different Biosaline Agriculture Systems in the Brazilian Semi-Arid Region Open
The objective of this research was to define the potential of brackish groundwater for 15 systems of biosaline agriculture in a representative area of the Brazilian semi-arid region. The study was conducted using a database of the State of…
View article: Qualitative vulnerability of the waters of a surface reservoir subjected to drought in a tropical semi-arid region
Qualitative vulnerability of the waters of a surface reservoir subjected to drought in a tropical semi-arid region Open
Irregular rainfall and the occurrence of droughts in tropical semi-arid regions have a negative impact on the quality and availability of water stored in reservoirs. The aim of this study was to evaluate the quality of water stored in an a…
View article: Qualitative vulnerability of the waters of a surface reservoir subjected to drought in a tropical semi-arid region
Qualitative vulnerability of the waters of a surface reservoir subjected to drought in a tropical semi-arid region Open
Irregular rainfall and the occurrence of droughts in tropical semi-arid regions have a negative impact on the quality and availability of water stored in reservoirs. The aim of this study was to evaluate the quality of water stored in an a…
View article: Fiber Quality, Yield, and Profitability of Cotton in Response to Supplemental Irrigation with Treated Wastewater and NPK Fertilization
Fiber Quality, Yield, and Profitability of Cotton in Response to Supplemental Irrigation with Treated Wastewater and NPK Fertilization Open
Cotton yield under the rainfed farming system in tropical semi-arid regions is significantly decreased by prolonged dry spells. In this context, supplemental irrigation (SI) with treated wastewater emerges as a strategy for the sustainabil…
View article: SPATIO-TEMPORAL DYNAMICS OF TOXIC CYANOBACTERIA IN AN ARTIFICIAL LAKE IN THE BRAZILIAN SEMI-ARID REGION
SPATIO-TEMPORAL DYNAMICS OF TOXIC CYANOBACTERIA IN AN ARTIFICIAL LAKE IN THE BRAZILIAN SEMI-ARID REGION Open
Intensification of the eutrophication process in surface water leads to an increase in the intensity and frequency of cyanobacterial blooms, compromising the availability of drinking water. Therefore, the aim of this study was to investiga…
View article: Water productivity in cultivating the cowpea under different production systems
Water productivity in cultivating the cowpea under different production systems Open
The increase in irrigated areas and the water crisis in numerous regions have encouraged the use of irrigation systems and management that afford greater efficiency in the use of water. Wastewater is one option for maximising this efficien…
View article: Quantifying Nutrient Content in the Leaves of Cowpea Using Remote Sensing
Quantifying Nutrient Content in the Leaves of Cowpea Using Remote Sensing Open
Although hyperspectral remote sensing techniques have increasingly been used in the nutritional quantification of plants, it is important to understand whether the method shows a satisfactory response during the various phenological stages…
View article: Sediments and nutrients input to a small reservoir in the tropical semi-arid region
Sediments and nutrients input to a small reservoir in the tropical semi-arid region Open
The sediment and nutrients that are input to surface reservoirs compromise the quality and quantity of the stored water. The aim of this study was to investigate the dynamics of sediment and nutrient input along the drainage basin of a sma…
View article: Environmental impact of different agricultural production systems
Environmental impact of different agricultural production systems Open
The efficient use of natural resources in production systems is essential for achieving ecological balance and sustainability in these systems. Current agricultural production systems have intensified the use of fertilisers and pesticides …
View article: Adapting the National Sanitation Foundation water quality index to the Brazilian semiarid
Adapting the National Sanitation Foundation water quality index to the Brazilian semiarid Open
Knowledge of the water quality of a reservoir used for human consumption is important. Water quality indices are used to facilitate understanding of this quality. This study aimed to adapt and compare the water quality index of the Nationa…
View article: Limnological dynamics in an artificial reservoir and intermittent river in the semi-arid region as a function of land use and occupation
Limnological dynamics in an artificial reservoir and intermittent river in the semi-arid region as a function of land use and occupation Open
Remote sensing coupled with the measurement of physical, chemical and biological variables is an important tool in water resource management. The aim of this study, therefore, was to evaluate the dynamics of the physical, chemical and biol…
View article: Modelling chlorophyll-a concentrations in a continental aquatic ecosystem of the Brazilian semi-arid region based on remote sensing
Modelling chlorophyll-a concentrations in a continental aquatic ecosystem of the Brazilian semi-arid region based on remote sensing Open
Remote-sensing data are essential to evaluate dynamic processes such as eutrophication and increases in the concentration of suspended sediments in continental aquatic systems. The aim of this study, therefore, was to develop models to est…
View article: Soil Organic Carbon Content Prediction Using Soil-Reflected Spectra: A Comparison of Two Regression Methods
Soil Organic Carbon Content Prediction Using Soil-Reflected Spectra: A Comparison of Two Regression Methods Open
Quantifying the organic carbon content of soil over large areas is essential for characterising the soil and the effects of its management. However, analytical methods can be laborious and costly. Reflectance spectroscopy is a well-establi…