40 documents found, page 1 of 4
Estudo sobre a origem do enrugamento do miolo da noz
Farinha, D.; Mendes, M.; Barroso, J.M.; Peixe, A.; Dias, A.; Rato, A.E.The Walnut tree (Juglans regia L.) is one of the most consumed nut species that has been gaining importance with the implementation of new orchards from north to south of the country. The incomplete formation of the seed (Kernel Shrivel) is one of the problems that most depreciates the quality and for which there isn’t an effective control due to its unknown origin. The accumulation of seed reserves that result...
Wine Grapes Ripening: A Review on Climate Effect and Analytical Approach to Inc...
Rouxinol, M.I.; Martins, M.R.; Barroso, J.M.; Rato, A.E.Red wine grapes have an important impact on the economy of many regions, both for wine quality and for their richness in phenolic compounds, which have many health benefits. Climate has been changing substantially in the last years, which affects greatly grape polyphenolic composition and wine quality. In this review, we will unveil the importance of climate in grape development, both physically and chemically,...
Exploring Opuntia ficus-indica as a Strategy to Mitigate High Temperatures Effe...
Rodrigues, L.; Santana, I.; Coelho, R.; Murta, G.; Cardoso, H.; Campos, C.; Barroso, J.M.; Rato, A.E.High temperatures significantly impact grapevine growth and development and lead to severe losses in grape quality and production. To minimize the impact of those environmental constraints, the application of biostimulants (BSts) has emerged as one of the most interesting strategies. BSts application derived from cactus species has been described as a successful approach to enhance tolerance to biotic and abiot...
Evaluation of the effect of tree canopy and dolomitic limestone application on ...
Bailote, D.; Serrano, J.; Rato, A.E.; Ribeiro, A.J.; Brito, I.The Montado is an agro-silvo-pastoral ecosystem, explored at several levels. On the tree level it can be made up of oaks like cork oak (Quercus suber) and holm oak (Q. rotundifolia). The ground cover is occupied by natural biodiverse pastures that are based on poor soils grazed by animals in an extensive regime. One of the major factors affecting the pasture productivity is the soil acidity [1]. The objective o...
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...
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...
Predicting the Evolution of Pasture Quality by NIRS: Perspectives for Real-Time...
Serrano, João; Shahidian, S.; Carreira, E.; Nogales-Bueno, J.; Rato, A.E.Pasture quality monitoring is a key element in the decision making process of the farm manager. Laboratory reference methods for assessing pasture quality parameters such as crude protein (CP) or neutral detergent fibre (NDF) require cutting, collection and analytical procedures involving technicians, time and reagents, making them laborious and expensive. The objective of this study was to evaluate the potenti...
Response of Mycorrhizal ’Touriga Nacional‘ Variety Grapevines to High Temperatu...
Nogales, A.; Ribeiro, H.; Nogales-Bueno, J.; Hansen, L.D.; Gonçalves, E.F.; Coito, J.L.; Rato, A.E.; Peixe, A.; Viegas, W.; Cardoso, HéliaHeat stress negatively affects several physiological and biochemical processes in grapevine plants. In this work, two new methods, calorespirometry, which has been used to determine temperature adaptation in plants, and near-infrared (NIR) spectroscopy, which has been used to determine several grapevine-related traits and to discriminate among varieties, were tested to evaluate grapevine response to high temper...
Measurement of patterns of soil organic matter in the Mediterranean Montado eco...
Serrano, J.; Shahidian, S.; Marques da Silva, J.; Carvalho, M.; Rato, A.E.From an environmental point of view, animal production is typically recognized as a major contributor to global greenhouse gas emissions. Nevertheless, it is important to add to this equation the positive impact of the Mediterranean Montado ecosystem on the soil, due to the potential for carbon sequestration through an increase in the soil organic matter content (SOM) resulting from the contribution of trees, p...