7 documents found, page 1 of 1
Estimation of Annual Productivity of Sown Rainfed Grasslands Using Machine Lear...
Morais, Tiago; Jongen, M.; Tufik, C.; Rodrigues, N.; Gama, I.; Serrano, João; Domingos, T.; Teixeira, R.Grasslands play a critical role in providing diverse ecosystem services. Sown biodiverse pastures (SBP) rich in legumes are an important agricultural innovation that increases grassland productivity and reduces the need for fertilisers. This study developed a machine learning model to obtain spatially explicit estimations of the productivity of SBP, based on field sampling data from five Portuguese farms during...
Satellite-based estimation of soil organic carbon in Portuguese grasslands
Morais, Tiago G.; Jongen, M.; Tufik, C.; Rodrigues, N.R.; Gama, I.; Serrano, João; Gonçalves, M.C.; Mano, R.; Domingos, T.; Teixeira, R.F.M.Introduction: Soil organic carbon (SOC) sequestration is one of the main ecosystem services provided by well-managed grasslands. In the Mediterranean region, sown biodiverse pastures (SBP) rich in legumes are a nature-based, innovative, and economically competitive livestock production system. As a co-benefit of increased yield, they also contribute to carbon sequestration through SOC accumulation. However, SOC...
Comparative Analysis of Pasture Soil Fertility in Semiarid Agro-Silvo-Pastoral ...
Moral, F.; Serrano, J.; Rebollo, F.; Teixeira, R.; Domingos, T.Dryland pastures are usually on soils with a low fertility. However, a high spatial variability is apparent in pasture soils. In consequence, the application of inputs should be based on the particular characteristics of each field and their within-field variability. In this study, a comparative analysis of seven experimental fields (agro–silvo–pastoral ecosystems) in the southwest of the Iberian Peninsula was ...
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...
Evaluation of Near Infrared Spectroscopy (NIRS) for Estimating Soil Organic Mat...
Serrano, João; Shahidian, S.; Marques da Silva, J.; Paixão, L.; Carvalho, M.; Moral, Francisco J.; Nogales-Bueno, J.; Teixeira, R.; Jongen, M.The Montado is an agro-silvo-pastoral ecosystem characteristic of the Mediterranean region. Pasture productivity and, consequently, the possibilities for intensifying livestock production depend on soil fertility. Soil organic matter (SOM) and phosphorus (P2O5) are two indicators of the evolution of soil fertility in this ecosystem. However, their conventional analytical determination by reference laboratory me...
Estimating soil organic carbon of sown biodiverse permanent pastures in Portuga...
Morais, Tiago; Tufik, Camila; Rato, A.; Rodrigues, N.; Gama, I.; Jongen, M.; Serrano, João; Fangueiro, D.; Domingos, T.; Teixeira, R.Grasslands in Portugal are key managed ecosystems, supporting and providing a diverse number of ecosystem services. Here, we developed a procedure for rapid estimation of soil organic carbon (SOC) in soil samples of sown biodiverse permanent pastures rich in legumes (SBP) in Portugal. We combined laboratory NIR spectral data analysis with artificial neural networks (ANN) to estimate the SOC content of SBP soil ...
Nutritional and sensory characterization of semi-intensively and intensively gr...
Jesus, D.; Voss, H-P; Monteiro, M. J.; Ramos, P.; Alcalá, L.; Gama, I.; Teixeira, R. F. M.; Domingos, T.; Komora, N.; Teixeira, P.; Pintado, M.