65 documents found, page 1 of 7
Estimation of pasture dry matter: comparative study between Rising Plate Meter ...
Serrano, J.; Franco, J.; Shahidian, S.; Serrano, A.; Moral, F.This study evaluated two expedient electronic sensors: a rising plate meter (RPM), and a “Grassmaster II” capacitance probe (GMII) to estimate pasture dry matter (DM, kg/ha). The sampling process consisted of sensor measurements, followed by pasture collection and laboratory reference analysis. A total of 288 pasture samples were collected throughout the 2023/2024 pasture growing season. The best DM estimation ...
Crude protein as indicator of pasture productivity and quality: Validation of t...
Serrano, J.; Franco, L.; Shahidian, S.; Serrano, A.; Moral, F.T his study evaluated two complementary proximal sensors (Rising Plate Meter, RPM and active optical sensor, AOS) to obtain a global indicator of pasture quality and productivity, the crude protein, CP (expressed in kg/ha). The experimental work was carried out on a dryland biodiverse and involved sensor measurements, followed by the collection of a total of 144 pasture samples. Sensor measurements (compressed ...
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...
Can sheep livestock systems based on dynamic grazing influence soil compaction?...
Serrano, J.; Carreira, E.; Shahidian, S.; Carvalho, M.; Silva, J.; 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 ...
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...
Spatiotemporal Patterns of Pasture Quality Based on NDVI Time-Series in Mediter...
Serrano, João; Shahidian, S.; Paixão, L.; Marques da Silva, J.; Morais, T.; Teixeira, R.; Domingos, T.The evolution of dryland pasture quality is closely related to the seasonal and interannual variability characteristic of the Mediterranean climate. This variability introduces great unpredictability in the dynamic management of animal grazing. The aim of this study is to evaluate the potential of two complementary tools (satellite images, Sentinel-2 and proximal optical sensor, OptRx) for the calculation of th...
Floristic Composition: Dynamic Biodiversity Indicator of Tree Canopy Effect on ...
Serrano, João; Shahidian, S.; Machado, Eliana; Paniagua, Luís; Carreira, Emanuel; Moral, Francisco J.; Pereira, A.; Carvalho, M.Montado is a characteristic ecosystem of the Mediterranean region. The adequate management of this silvo-pastoral ecosystem requires good understanding of the effect of factors such as tree canopy, fertilization and soil amendment on pasture growth. The main objectives of this work were: (1) to evaluate the effect of tree canopy on soil characteristics and pasture productivity and quality; and (2) to test flori...
Real-Time Quantification of Crude Protein and Neutral Detergent Fibre in Pastur...
Carreira, Emanuel; Serrano, João; Shahidian, S.; Nogales-Bueno, J.; Rato, A.E.The Montado is a Mediterranean agro–forestry–pastoral ecosystem. Knowledge of pastures' nutritional value is critical for farm managers’ decision-making. Laboratory determinations are very expensive, destructive and costly, in terms of time and labour. The objective of this experimental work was to calibrate and validate a portable near-infrared spectrometer (micro-NIR) to predict the nutritive value (neutral d...
Near Infrared Spectroscopy (NIRS) and Optical Sensors for Estimating Protein an...
Serrano, João; Shahidian, S.; Carapau, A.; Rato, A.E.Dryland pastures provide the basis for animal sustenance in extensive production systems in Iberian Peninsula. These systems have temporal and spatial variability of pasture quality resulting from the diversity of soil fertility and pasture floristic composition, the interaction with trees, animal grazing, and a Mediterranean climate characterized by accentuated seasonality and interannual irregularity. Grazing...