Browsing by Author "Salcedo Cidoncha, Ramón"
Now showing items 1-14 of 14
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Characterisation of activation pressure, flowrate and spray angle for hollow-cone nozzles controlled by pulse width modulation
(Elsevier, 2022-06)
Article
Restricted access - publisher's policyPulse width modulation (PWM) solenoid valves are used for controlling flowrates of hollow-cone nozzles on variable-rate air-assisted orchard sprayers. However, little information is available on the spray characteristics ... -
Comparative study of CFD models of the air flow produced by an air-assisted sprayer adapted to the crop geometry
(2017-01-01)
Article
Restricted access - publisher's policyA computational fluid dynamics (CFD) model for simulating the air flow produced by an air-assisted sprayer can be developed according to any one of several sets of criteria and for various specific applications. Thus far, ... -
Comprobación de un sistema de apliación variable basado en mapas de vegetación obtenidos con un vehículo aéreo no tripulado (UAV)
(Universidad de Zaragoza (UZA), 2019)
Conference report
Open AccessLas características de la vegetación son un aspecto fundamental a tener en cuenta para determinar el volumen de aplicación de productos fitosanitarios. El alto grado de variabilidad intraparcelaria ha aumentado la dificultad ... -
Development of canopy vigour maps using UAV for site-specific management during vineyard spraying process
(2019-01-01)
Article
Open AccessSite-specific management of crops represents an important improvement in terms of efficiency and efficacy of the different labours, and its implementation has experienced a large development in the last decades, especially ... -
DOSAVIÑA: Tool to calculate the optimal volume rate and pesticide amount in vineyard spray applications based on a modified leaf wall area method
(2019-05-01)
Article
Open AccessDOSAVIÑA is a new tool (website and app for smartphones) developed for calculating the optimal volume rates and pesticide doses to apply during spray application processes in vineyards. DOSAVIÑA also calculates and recommends ... -
Dynamic evaluation of airflow stream generated by a reverse system of an axial fan sprayer using 3D-ultrasonic anemometers. Effect of canopy structure
(2019-08-01)
Article
Open AccessAir assisted sprayers are currently used for the applications of plant protection products in fruit trees and vineyards. However, the use of these equipment carries a high environmental risk, mainly owing to the generation of ... -
Estudio de la turbulencia del aire y su efecto en la distribución de producto en carretillas adaptadas para tratamientos en invernaderos
(2017)
Conference report
Open AccessThe present work consisted to characterize the fluctuations of the airflow produced by 4 sprayers adapted to greenhouse phytosanitary applications. Four equipment were used: 1) a handheld trolley sprayer (Amate, Almería, ... -
Evaluation of leaf deposit quality between electrostatic and conventional multi-row sprayers in a trellised vineyard
(2020-01-01)
Article
Open AccessSpray application technologies for specialty crops have developed considerably in recent years with regard to improved control, reduced cost, and ability to avoid environmental contamination. For example, new developments ... -
Influence of sprayer type, air settings and nozzle type on drift during spray application in vineyard. Effect of canopy density on spray retention
(2017)
Conference report
Open AccessSprayer types, as well as working parameters, have direct influence on the amount of spray retained on the canopy. This research was focused on the quantification of spray amount that exceeded the last canopy row during ... -
On-Farm evaluation of prescription map-based variable rate application of pesticides in vineyards
(2020-01-01)
Article
Open AccessCanopy characteristics are crucial for accurately and safely determining the pesticide quantity and volume of water used for spray applications in vineyards. The inevitably high degree of intraplot variability makes it ... -
Orchard sprayer’s evaluation according to ISO 16119-3. Need to support manufacturer’s procedure
(2018)
Conference report
Open AccessSince the publication of European Directive (2009/127/EC), environmental requirements for new orchard sprayers are mandatory. Only equipment which has successfully accomplished the specifications can be placed into the EU market -
Relative efficiencies of experimental and conventional foliar sprayers and assessment of optimal LWA spray volumes in trellised wine grapes
(2021-01-13)
Article
Open AccessLeaf wall area (LWA) has been proposed as an appropriate dose expression for field testing of plant protection products (PPPs) applied via foliar spray in trellised grapes. However, its efficiency could change depending ... -
Use of ultrasound anemometers to study the influence of air currents generated by a sprayer with an electronic control airflow system on foliar coverage. Effect of droplet size
(2022-11)
Article
Restricted access - publisher's policyAir assistance and droplet’s characteristics influence on the pesticide deposit and its distribution over the intended target during the spray application process. The present research work is focused on the characterization ... -
Valoración sobre la actuación de los agricultores respecto a la contaminación del agua durante la aplicación de fitosanitarios (proyecto europeo TOPPS)
(2017)
Conference report
Open AccessEl proyecto europeo TOPPS, impulsado por el sector privado con el apoyo de las instituciones públicas, pretende hacer llegar toda la información necesaria a los agricultores europeos acerca de ...
