Browsing by Subject "Agricultura de precisió"
Now showing items 1-14 of 14
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Agricultura 4.0: utilización de cámaras convencionales para la estimación del estado nitrogenado encultivos de trigo y cebada
(Universitat Politècnica de Catalunya, 2019-10-30)
Master thesis
Restricted access - confidentiality agreement -
Air-pinch PWM valve to regulate flow rate of hollow-cone nozzles for variable-rate sprayers
(2023-01-01)
Article
Restricted access - publisher's policyElectric pulse width modulation (PWM) solenoid valves are commonly used to regulate nozzle flow rates to achieve precision variable-rate spray applications. However, some pesticide formulations, such as wettable powders ... -
Avaluació de la distribució transversal de fertilitzant orgànic provinent del compostatge en forma de pellet
(Universitat Politècnica de Catalunya, 2023-10-26)
Bachelor thesis
Open AccessFertilization is essential for optimizing soil productivity and meeting the global food demand. However, the growing reliance on synthetic fertilizers, such as urea, has raised both environmental and economic concerns. ... -
Detection of irrigation inhomogeneities in an olive grove using the NDRE vegetation index obtained from UAV images
(2019-01-01)
Article
Open AccessWe have developed a simple photogrammetric method to identify heterogeneous areas of irrigated olive groves and vineyard crops using a commercial multispectral camera mounted on an unmanned aerial vehicle (UAV). By comparing ... -
Determinación de parámetros vegetativos con una cámara multiespectral
(Universitat Politècnica de Catalunya, 2024-07-10)
Bachelor thesis
Open AccessThe agricultural sector faces the need to produce more food on a smaller arable area, with less labor and the problem of water scarcity. For this reason, "Precision Agriculture" appears as an alternative, since it applies ... -
Droplet size distributions from hollow-cone nozzles coupled with PWM valves
(2022-01-01)
Article
Restricted access - publisher's policyIntegration of variable-rate hollow-cone nozzles in orchard sprayers is the optimal solution to achieve precision spray applications of agrochemicals; however, little information is available on the droplet size distribution ... -
Estalvi de recursos en el cultiu de blat de moro mitjançant l'ús d'imatges obtingudes amb UAV
(Universitat Politècnica de Catalunya, 2017-11)
Master thesis
Restricted access - author's decisionEl present treball té com a objectiu estudiar la problemàtica del l’ús excessiu dels recursos en l’activitat agrícola. Basant-se principalment en el recurs hídric i l’adob nitrogenat. D’altra banda, s’avalua la viabilitat ... -
Estimación del rendimiento en viña con técnicas de teledetección (variedad Macabeo)
(Universitat Politècnica de Catalunya, 2020-07-15)
Bachelor thesis
Restricted access - author's decision
Covenantee: Hemav / Juvé & Camps -
Looking behind occlusions: a study on amodal segmentation for robust on-tree apple fruit size estimation
(2023-06)
Article
Open AccessThe detection and sizing of fruits with computer vision methods is of interest because it provides relevant information to improve the management of orchard farming. However, the presence of partially occluded fruits limits ... -
Simultaneous fruit detection and size estimation using multitask deep neural networks
(Elsevier, 2023-09)
Article
Open AccessThe measurement of fruit size is of great interest to estimate the yield and predict the harvest resources in advance. This work proposes a novel technique for in-field apple detection and measurement based on Deep Neural ... -
Static and dynamic performance evaluation of a solid-state lidar for 3D object detection in greenhouse spray applications
(2023-01-01)
Article
Restricted access - publisher's policyAn effective variable-rate spraying system for greenhouses requires accurate canopy structure parameters of plants to ensure proper pesticide dosage adjustment. While conventional laser systems integrated into spray systems ... -
Uso de los drones como herramientas de gestión del viñedo
(2020-12-22)
Article
Open AccessEl ecosistema que rodea la producción de uva y vino a nivel español se ve inmerso en un importante cambio de paradigma productivo con crecientes retos a los que hacer frente si se quiere asegurar su sostenibilidad durante ... -
Ús de càmeres convencionals per a l’estimació del contingut de nitrogen en blat
(Universitat Politècnica de Catalunya, 2018-02-05)
Bachelor thesis
Open AccessIn order to improve the management of nitrogen fertilization and yields of wheat crops, four treatments of nitrogen fertilization (0, 60, 120 and 180 kg N / ha) were applied in different plots. Nitrogen content and biomass ... -
Validació d’índexs espectrals per determinar vigor i clorosi en vinya
(Universitat Politècnica de Catalunya, 2020-06-18)
Bachelor thesis
Open AccessThe identification of variability in biophysical parameters on a plot is a key aspect to make a good management of it and obtain the maximum yield. Remote sensing techniques allow identifying this variability, either with ...
