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Keywords = trailed sprayers

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17 pages, 2944 KiB  
Article
A Comparison between Conventional Sprayers and New UAV Sprayers: A Study Case of Vineyards and Olives in Extremadura (Spain)
by Pablo Antonio Morales-Rodríguez, Eugenio Cano Cano, Jaime Villena and Jesús Antonio López-Perales
Agronomy 2022, 12(6), 1307; https://doi.org/10.3390/agronomy12061307 - 29 May 2022
Cited by 23 | Viewed by 4164
Abstract
Recently, technological development has become increasingly pronounced, with great advances in all production areas, including agriculture. In the agricultural sector, improvements in machinery and the study of new techniques have resulted in the increased efficiency and productivity of different crops. In particular, UAVs [...] Read more.
Recently, technological development has become increasingly pronounced, with great advances in all production areas, including agriculture. In the agricultural sector, improvements in machinery and the study of new techniques have resulted in the increased efficiency and productivity of different crops. In particular, UAVs (unmanned aerial vehicles) are increasingly used in agriculture. Among the latest utilities is the application of phytosanitary products. The use of small UAVs retrofitted with spraying systems make it possible to treat large surfaces in short periods of time, achieving a reduction in inputs and time compared to conventionally used methods (trailed sprayers). The aim of this work was to compare conventional sprayers and UAV sprayers on a farm in Spain, with olive and vineyard crops. The determining factors in the choice of one or another alternative were studied, such as the economic requirements and efficiency of different alternatives. The results show that a large investment is required to acquire a UAV sprayer, while operating costs are higher for conventional sprayers versus UAV sprayers. Efficiency (ha/h) is much higher for UAV sprayers. In addition to these advantages, UAV sprayers require a lower cost of water and products. However, different factors could make conventional sprayers a better choice. Full article
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20 pages, 3168 KiB  
Article
Development and Field Evaluation of a Spray Drift Risk Assessment Tool for Vineyard Spraying Application
by Georgios Bourodimos, Michael Koutsiaras, Vasilios Psiroukis, Athanasios Balafoutis and Spyros Fountas
Agriculture 2019, 9(8), 181; https://doi.org/10.3390/agriculture9080181 - 14 Aug 2019
Cited by 18 | Viewed by 6697
Abstract
Spray drift is one of the most important causes of pollution from plant protection products and it puts the health of the environment, animals, and humans at risk. There is; thus, an urgent need to develop measures for its reduction. Among the factors [...] Read more.
Spray drift is one of the most important causes of pollution from plant protection products and it puts the health of the environment, animals, and humans at risk. There is; thus, an urgent need to develop measures for its reduction. Among the factors that affect spray drift are the weather conditions during application of spraying. The objective of this study was to develop and evaluate a spray drift evaluation tool based on an existing model by TOPPS-Prowadis to improve the process of plant protection products’ application and to mitigate spray drift for specific meteorological conditions in Greece that are determined, based on weather forecast, by reassessing the limits for wind speed and direction, temperature, and air relative humidity set in the tool. The new limits were tested by conducting experimental work in the vineyard of the Agricultural University of Athens with a trailed air-assisted sprayer for bush and tree crops, using the ISO 22866:2005 methodology. The results showed that the limits set are consistent with the values of the spray drift measured and follows the tool’s estimates of low, medium, and high risk of spray drift. Full article
(This article belongs to the Special Issue Sensors Application in Agriculture)
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