34 documents found, page 1 of 4
Temporal Stability of Soil Electrical Conductivity Patterns: Contact versus Non...
Serrano, João; Shahidian, Shakib; Marques da Silva, José; Moral, F.Previous research has shown that the amount of soil spatial variability across a farm and within an agricultural field is of key importance to determine the potential benefits of adopting effective management strategies. Precision agriculture (PA) intends to validate technological tools that capture soil and crop spatial variability, which constitute the basis for the establishment of differentiated management ...
Tendencias de la evapotranspiración, temperatura y precipitación en las princip...
Garcia-Martin, A.; Paniágua, L.; Garcia Garcia, D.; Serrano, J.; Rebollo, F.; Moral, F.Actualmente, la hipótesis del calentamiento global del planeta está ampliamente aceptada, pero los posibles escenarios futuros que plantea el calentamiento global siguen llenos de incertidumbre dada la complejidad del sistema climático. Por ello análisis de tendencias han despertado un gran interés. La Península Ibérica es una región es una de las zonas que se verá más gravemente afectada por un aumento de la t...
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 ...
Pasture Floristic Composition as an Indicator of Soil pH Correction and Sheep S...
Serrano, João; Matono, P.; Carreira, E.; Shahidian, S; Moral, F.; Paniagua, L.; Charneca, R.; Pereira, A.; Belo, A.The application of dolomitic limestone is a recommended practice for improving pastures established on acidic soils. On the other hand, pasture availability should determine the adjustment of the biotic load. The aim of this study is to evaluate the potential of pasture plant community composition as an indicator to assess the effects of intensification strat egies in the Montado ecosystem, specifically soil pH...
Definição e validação de zonas de gestão (ZG) na vinha: Estudo de caso
Serrano, João; Paixão, L.; Marques da Silva, José; Moral, F.No contexto atual, de subida dos custos de produção, é essencial otimizar a gestão dos recursos disponíveis, o que pressupõe a incorporação de tecnologias que melhorem o conhecimento sobre as variáveis envolvidas no processo produtivo. Este estudo teve por objetivo demonstrar os benefícios de definir e validar zonas de gestão (ZG) numa vinha. Para o efeito foram realizados dois levantamentos expeditos da parcel...
Avaliação da estabilidade temporal de zonas homogéneas de gestão (ZHG) em pasta...
Serrano, João; Marques da Silva, José; Paniágua, L.; Moral, F.A Agricultura de Precisão (AP) procura validar ferramentas tecnológicas que permitam captar a variabilidade espacial das culturas e do solo, o que constitui a base para o estabelecimento de zonas homogéneas de gestão (ZHG). Os sensores que medem a condutividade elétrica aparente do solo (CEa) são exemplo destas ferramentas no levantamento da variabilidade espacial das caraterísticas do solo. A estabilidade temp...
Estimation of Dry Matter Yield in Mediterranean Pastures: Comparative Study bet...
Serrano, João; Franco, J.; Shahidian, Shakib; Moral, F.This study evaluates two expedient electronic sensors, a rising plate meter (RPM) and a “Grassmaster II” capacitance probe (GMII), to estimate pasture dry matter (DM, in kg ha−1). The sampling process consisted of sensor measurements, followed by pasture collection and a laboratory reference analysis. In this comparative study, carried out throughout the 2023/2024 pasture growing season, a total of 288 pasture ...
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 ...
Definition and Validation of Vineyard Management Zones Based on Soil Apparent E...
Serrano, João; Mau, Vasco; Rodrigues, Rodrigo; Paixão, Luís; Shahidian, Shakib; Marques da Silva, José; Paniagua, Luís; Moral, F.In the current context of increasing costs of production factors, it is essential to optimize the management of available resources, seeking to incorporate technologies that improve knowledge of the variables involved in the agronomic production process. The aim of this study is to define and validate management zones (MZ) in a 3.3 ha vineyard located near Évora, in the South of Portugal. A contact sensor (“Ver...