53 documents found, page 1 of 6
Upgrade of a Vicon RS-EDW spreader to variable rate application: Development of...
Serrano, João; Amaral, Alexandre; Shahidian, Shakib; Escribano, C.; Moral, Francisco; Marques da Silva, J.Over the last two decades, a considerable amount of equipment has been acquired (spreaders, seeders, sprayers, among others) to respond to the challenges of Precision Agriculture (PA) concept. Most of this equipment has been purchased at high costs. However, many of them, despite still being functional and equipped with sensors, actuators, and electronic processing units, capable of adjusting to variations in s...
Technological Upgrade of a Vicon RS-EDW Spreader: Development of a Microcontrol...
Serrano, João; Amaral, Alexandre; Shahidian, Shakib; Marques da Silva, J.; Moral, Francisco; Escribano, C.: Over the last two decades, a considerable amount of equipment has been acquired (spread ers, seeders, sprayers, among others) to respond to the challenges of the precision agriculture (PA) concept. Most of this equipment has been purchased at a high cost. However, many of them, despite still being functional and equipped with sensors, actuators, and electronic processing units capable of adjusting to variatio...
Pasture Quality Assessment through NDVI Obtained by Remote Sensing: A Validatio...
Serrano, João; Shahidian, Shakib; Paixão, Luís; Marques da Silva, J.; Paniágua, LuísMonitoring the evolution of pasture availability and quality throughout the growing season is the basis of grazing management in extensive Mediterranean livestock systems. Remote sensing (RS) is an innovative tool that, among many other applications, is being developed for detailed spatial and temporal pasture quality assessment. The aim of the present study is to evaluate the potential of satellite images (Sen...
INOVAÇÃO TECNOLÓGICA NA GESTÃO DO MONTADO: NOVAS FERRAMENTAS NO APOIO À TOMADA ...
Serrano, João; Carreira, E.; Martins, M.; Shahidian, Shakib; Paixão, Luís; Batista, E.; Marques da Silva, J.; Pereira, A.; Carvalho, M.O montado é um ecossistema característico dos países de clima mediterrânico, representando o Alentejo a região de maior expressão em Portugal. É um sistema misto, agro-silvo-pastoril, que suporta a produção pecuária extensiva com baixos encabeçamentos animais. Nas últimas duas décadas a agricultura sofreu um forte impacto tecnológico associado ao conceito de Agricultura de Precisão. Este conceito corresponde a ...
Pasture Quality Monitoring Based on Proximal and Remote Optical Sensors: A Case...
Serrano, João; Mendes, Sara; Shahidian, Shakib; Marques da Silva, J.: Permanent dryland pastures are the basis of animal feed in extensive grazing systems. Seasonality and inter-annual climatic variability, associated with shallow, acidic, and not very fertile soils, result in low productivity and rapid degradation of pasture quality, which requires the supplementation of animal feed. In this study, carried out in a biodiverse pasture field in the Mediterranean region of southe...
Impact of Deferred Versus Continuous Sheep Grazing on Soil Compaction in the Me...
Serrano, João; Carreira, Emanuel; Shahidian, Shakib; Carvalho, Mário; Marques da Silva, J.; L. Paniagua, L.; Moral, F.; Pereira, A.Deferred grazing (DG) consists in adapting the number of animals and the number of days grazed to the availability of pasture. Compared to continuous grazing (CG), which is based on a permanent and low stocking rate, DG is a management strategy that aims at optimizing the use of the resources available in the Mediterranean Montado ecosystem. This study with sheep grazing, carried out between 2019 and 2021 on a ...
Sensing and Mapping the Effects of Cow Trampling on Soil Compaction of the Mont...
Serrano, João; Marques, J.; Shahidian, S.; Carreira, E.; Marques da Silva, J.; Paixão, L.; Paniagua, L.L.; Moral, F.; Ferraz de Oliveira, I.The economic and environmental sustainability of extensive livestock production systems requires the optimisation of soil management, pasture production and animal grazing. Soil compaction is generally viewed as an indicator of soil degradation processes and a determinant factor in crop productivity. In the Montado silvopastoral ecosystem, characteristic of the Iberian Peninsula, animal trampling is mentioned a...
Proximal sensors for monitoring seasonal changes of feeding sites selected by g...
Serrano, João; Sales-Baptista, E.; Shahidian, Shakib; Marques da Silva, J.; Ferraz de Oliveira, I.; Lopes de Castro, J.; Pereira, AlfredoMontado is a silvo-pastoral ecosystem of the Mediterranean region, a mixed system of trees and grass, where livestock graze. The information about the spatial and temporal variability of pastures constitutes the basis to estimate available feed, a fundamental decision support tool for the farm manager to define the animal stocking or the rotation of the grazed paddocks. In this study, the intrinsic features of ...
Management zones in pastures based on soil apparent electrical conductivity and...
Serrano, João; Shahidian, S.; Paixão, L.; Marques da Silva, J.; Moral, F.The intensification of the Montado mixed ecosystem (agro–silvo–pastoral) is a current endeavor in the context of promoting the sustainability of extensive livestock production in the Mediterranean region. Increased pasture productivity and extensive animal production involves the use of technologies to monitor spatial variability and to implement differentiated management of pasture grazing, fertilization or so...
A Technological Approach to Support Extensive Livestock Management in the Portu...
Serrano, João; Roma, Luís; Shahidian, S.; Belo, Anabela; Carreira, E.; L. Paniagua, L.; Moral, F.; Paixão, L.; Marques da Silva, J.Extensive livestock production systems based on improved pastures under Montado of Holm oaks represent an approach in line with the challenges of sustainability and biodiversity. The increasing incorporation of technologies in the monitoring of this ecosystem allows for a better knowledge of the spatial and temporal variability and, consequently, a more economically profitable management. In this study, between...