5 documents found, page 1 of 1
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...
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...
Evaluation of Near Infrared Spectroscopy (NIRS) and Remote Sensing (RS) for Est...
Serrano, João; Shahidian, S.; Marques da Silva, J.; Paixão, L.; Carreira, E.; Carmona-Cabezas, R.; Nogales-Bueno, J.; Rato, Ana ElisaPasture quality monitoring is a key element in the decision making process of a farm manager. Laboratory reference methods for assessing quality parameters such as crude protein (CP) or fibers (neutral detergent fiber: NDF) require collection and analytical procedures involving technicians, time, and reagents, making them laborious and expensive. The objective of this work was to evaluate two technological and ...