Daniel Fonseca de Carvalho
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View article: Cultivos orgânicos em sucessão de pimenteira e quiabeiro em sistema de verdeponia
Cultivos orgânicos em sucessão de pimenteira e quiabeiro em sistema de verdeponia Open
O objetivo desta pesquisa foi avaliar a sucessão entre os cultivos da pimenta cambuci (Capsicum baccatum var. pendulum) e do quiabo (Abelmoschus esculents) em verdeponia, em condições de campo, usando biomassa vegetal de capim elefante e g…
View article: Cultivos orgânicos em sucessão de pimenteira e quiabeiro em sistema de verdeponia
Cultivos orgânicos em sucessão de pimenteira e quiabeiro em sistema de verdeponia Open
O objetivo desta pesquisa foi avaliar a sucessão entre os cultivos da pimenta cambuci (Capsicum baccatum var. pendulum) e do quiabo (Abelmoschus esculents) em verdeponia, em condições de campo, usando biomassa vegetal de capim elefante e g…
View article: Operating Point Control System in Single-Phase Motor Pump Sets Used in Irrigation Systems: Development and Evaluation
Operating Point Control System in Single-Phase Motor Pump Sets Used in Irrigation Systems: Development and Evaluation Open
Fixed irrigation systems often experience uneven water pressure across different sections, making it challenging to irrigate all areas efficiently without wasting energy. This issue is particularly evident when using low-power, single-phas…
View article: Crise hipertensiva em cenário de urgência médica
Crise hipertensiva em cenário de urgência médica Open
O presente artigo tem como objetivo analisar a abordagem da crise hipertensiva em cenários de urgência médica, com ênfase nos procedimentos adotados, nos desafios enfrentados e nas consequências clínicas do manejo inicial. O aspecto que fu…
View article: The use of rainfall disaggregation coefficients to obtain intensity-duration-frequency curves: estimation using pluviographic data versus national mean values
The use of rainfall disaggregation coefficients to obtain intensity-duration-frequency curves: estimation using pluviographic data versus national mean values Open
The lack of sub-daily rainfall data to obtain intensity-duration-frequency (IDF) relationships at a local scale is a common limitation in many countries. This study determines rainfall disaggregation coefficients using pluviographic data f…
View article: Are Soil Physical-Hydraulic Attributes Influenced By Profile Position On The Slope?
Are Soil Physical-Hydraulic Attributes Influenced By Profile Position On The Slope? Open
Objective: This study aimed to evaluate the influence of soil physical-hydraulic attributes in a toposequence at the Federal Rural University of Rio de Janeiro campus, identifying their relationship with erosion susceptibility. Theoretical…
View article: Production, quality, and longevity of zinnia cultivated under silicate fertilization and water restriction
Production, quality, and longevity of zinnia cultivated under silicate fertilization and water restriction Open
The effects of water deficit and fertilization are fundamentals for productivity and quality of ornamental plants. This study evaluated the production, quality, and longevity of zinnia flower stems under irrigation levels and silicon doses…
View article: Growth of tree species seedlings under shading levels and automatic irrigation management
Growth of tree species seedlings under shading levels and automatic irrigation management Open
The utilization of high-quality seedlings can be an effective strategy for restoring degraded areas. This study aimed to evaluate the production of Cariniana estrellensis and Gallesia integrifolia seedlings using shading levels and the gro…
View article: Biorremediação de água residuária agroindustrial e biofixação de carbono com cianobactéria Arthrospira platensis DHR 20
Biorremediação de água residuária agroindustrial e biofixação de carbono com cianobactéria Arthrospira platensis DHR 20 Open
A biomassa microalgal oferece benefícios notáveis como matérias-primas promissoras para produção sustentável devido às suas macromoléculas. No presente estudo, a microalga Arthrospira platensis DHR 20 foi cultivada em dois conjuntos interc…
View article: Variable-Rate Irrigation in Diversified Vegetable Crops: System Development and Evaluation
Variable-Rate Irrigation in Diversified Vegetable Crops: System Development and Evaluation Open
Diversified cropping systems offer an alternative to sustainable agriculture, but they present high spatial variability. This study aims to develop and evaluate an automated irrigation system and a variable-rate water application for areas…
View article: Automated irrigation management system for tree species seedlings using weighing mini-lysimeters
Automated irrigation management system for tree species seedlings using weighing mini-lysimeters Open
Due to the lack of irrigation management techniques, the application of water in forest nurseries is generally carried out without control, resulting in great waste. This study aimed to develop and evaluate weighing mini-lysimeters (ML) to…
View article: Water Infiltration in Different Soil Covers and Management in the Cerrado–Amazon Ecotone, Brazil
Water Infiltration in Different Soil Covers and Management in the Cerrado–Amazon Ecotone, Brazil Open
Soil water infiltration is an important component of the hydrological cycle, and it is best evaluated when the raindrop impacts the ground surface. For this reason, it is affected by changes in land use and land cover and by the characteri…
View article: Water Infiltration in different Soil Covers and Management in the Cerrado-Amazon Ecotone, Brazil
Water Infiltration in different Soil Covers and Management in the Cerrado-Amazon Ecotone, Brazil Open
Soil water infiltration is an important component of the hydrological cycle and it is best evaluated when the raindrop is impacted on the ground surface. For this reason, it is affected by changes in land use and occupation, and by the cha…
View article: Treated cattle wastewater affects the growth, quality and water productivity of Dalbergia nigra seedlings produced with shading and irrigation levels
Treated cattle wastewater affects the growth, quality and water productivity of Dalbergia nigra seedlings produced with shading and irrigation levels Open
The continuous demand for water in the agricultural sector has encouraged researchers worldwide to find alternatives to optimize this resource. The use of wastewater in irrigation is promising in this scenario, especially to produce tree s…
View article: Soil and Water Losses with Simulated Rainfall Considering Experimental Plots and Rainfall Patterns
Soil and Water Losses with Simulated Rainfall Considering Experimental Plots and Rainfall Patterns Open
Rainfall simulators are important pieces of equipment to investigate hydrological processes and soil erosion. Here, we investigated the operational characteristics, the rainfall characteristics, and the soil erosion process under collectin…
View article: YIELD OF ORGANIC OKRA IRRIGATED UNDER DIFFERENT METHODS OF CONDUCTION AND GROWING PERIODS
YIELD OF ORGANIC OKRA IRRIGATED UNDER DIFFERENT METHODS OF CONDUCTION AND GROWING PERIODS Open
Okra is traditionally grown in the summer, but its cultivation in the winter can bring profitability to the producer, due to the low offer of the product, especially if grown in an organic production system. This study aimed to evaluate th…
View article: Developing an automatic collector of runoff for studies using rainfall simulators
Developing an automatic collector of runoff for studies using rainfall simulators Open
Soil erosion studies using rainfall simulators are generally expensive and time consuming. Thus, the aim of this study was to develop a prototype of an automatic runoff collector, capable of real-time quantifying runoff volume and soil los…
View article: Simulated rainfall in Brazil: An alternative for assesment of soil surface processes and an opportunity for technological development
Simulated rainfall in Brazil: An alternative for assesment of soil surface processes and an opportunity for technological development Open
Rainfall simulators (RS) have been used, above all, to evaluate hydrological processes related to soil water infiltration, surface runoff and soil erosion. They allow repeatability of rain application with different precipitation intensiti…
View article: Morphophysiological changes in black pepper under different water supplies
Morphophysiological changes in black pepper under different water supplies Open
The center of origin and domestication of Piper nigrum L. are in high rainfall regions. But when grown in regions with irregular or insufficient rainfall, irrigation becomes essential. This study evaluated the impact of irrigation levels o…
View article: Effects of Land Use and Cropping on Soil Erosion in Agricultural Frontier Areas in the Cerrado-Amazon Ecotone, Brazil, Using a Rainfall Simulator Experiment
Effects of Land Use and Cropping on Soil Erosion in Agricultural Frontier Areas in the Cerrado-Amazon Ecotone, Brazil, Using a Rainfall Simulator Experiment Open
Agricultural soils provide ecosystem services, but the removal of natural vegetation reduces water infiltration capacity, increasing surface runoff. Thus, monitoring erosion is critical for sustainable agricultural management. Sediment los…
View article: Developing an automatic collector of runoff for studies using rainfall simulators
Developing an automatic collector of runoff for studies using rainfall simulators Open
Soil erosion studies using rainfall simulators are generally expensive and time consuming. Thus, the aim of this study was to develop a prototype of an automatic runoff collector, capable of real-time quantifying runoff volume and soil los…
View article: Yield response factor (Ky) and initial growth in black pepper in a tropical environment
Yield response factor (Ky) and initial growth in black pepper in a tropical environment Open
Black pepper is widely produced in Brazil, though there are few studies related to its water requirements and the effects of water deficit (WD) applied under tropical conditions. The growth, sensitivity to WD, and first-year productivity o…
View article: Rainfall Disaggregation Coefficients for Obtaining Intensity-Duration-Frequency Curves: Estimation Using Pluviographic Data Versus National Mean Values
Rainfall Disaggregation Coefficients for Obtaining Intensity-Duration-Frequency Curves: Estimation Using Pluviographic Data Versus National Mean Values Open
View article: Morphophysiological changes in black pepper under different water supplies
Morphophysiological changes in black pepper under different water supplies Open
The center of origin and domestication of Piper nigrum L. are in high rainfall regions. But when grown in regions with irregular or insufficient rainfall, irrigation becomes essential. This study evaluated the impact of irrigation levels o…
View article: Yield response factor (Ky) and initial growth in black pepper in a tropical environment
Yield response factor (Ky) and initial growth in black pepper in a tropical environment Open
Black pepper is widely produced in Brazil, though there are few studies related to its water requirements and the effects of water deficit (WD) applied under tropical conditions. The growth, sensitivity to WD, and first-year productivity o…
View article: Production of forest seedlings using sewage sludge and automated irrigation with ozonated cattle wastewater
Production of forest seedlings using sewage sludge and automated irrigation with ozonated cattle wastewater Open
The large volume of effluents generated by intensive cattle production can become an environmental problem, requiring solutions that combine treatment and disposal of reuse water. The quality of cattle wastewater (CWW) treated by ozonation…
View article: Desempenho produtivo e qualidade dos frutos do maracujazeiro cultivado em manejo orgânico sob mulching e sistema automatizado de irrigação
Desempenho produtivo e qualidade dos frutos do maracujazeiro cultivado em manejo orgânico sob mulching e sistema automatizado de irrigação Open
Diversos fatores influenciam o desempenho produtivo e qualidade dos frutos do maracujazeiro, dentre eles, características das mudas, práticas de manejo e tratos culturais, assim, o objetivo deste trabalho foi avaliar o desempenho produtivo…
View article: Soil loss and runoff obtained with customized precipitation patterns simulated by InfiAsper
Soil loss and runoff obtained with customized precipitation patterns simulated by InfiAsper Open
View article: Crescimento inicial de cultivares de Açaí com irrigação automatizada / Initial growth of Açaí cultivars with automated irrigation
Crescimento inicial de cultivares de Açaí com irrigação automatizada / Initial growth of Açaí cultivars with automated irrigation Open
Nos últimos anos, o açaí (Euterpe oleraceae Mart.), espécie nativa da região Norte do Brasil, vem sendo estudada de maneira mais aprofundada. A necessidade hídrica das culturas vegetais e a disponibilidade de água cada vez mais restrita na…
View article: Growth and production of tomato fertilized with ash and castor cake and under varying water depths, cultivated in organic potponics
Growth and production of tomato fertilized with ash and castor cake and under varying water depths, cultivated in organic potponics Open
Two experiments were performed to evaluate the effect of ash (40, 80, and 120 g per plant), castor cake (140 and 280 g per plant) and water depth (135, 165, 191, and 213 mm) on the growth and production of organic tomato cultivated in pots…