In the context of increasing global food demand and the urgent need for production processes optimization, plant protection products play a key role in safeguarding crops from insects, pests, and fungi, responsible of plant diseases proliferation and yield losses. Despite the inaccurate distribution of conventional aerial spraying performed by airplanes and helicopters, Unmanned Aerial Spraying Systems (UASSs) offer low health risks and operational cost solutions, preserving crops and soil from physical damage. This study explores the impact of UASS flight height (2 m and 2.5 m above ground level), speed (1 m s⁻¹ and 1.5 m s⁻¹), and position (over the canopy and the inter-row) on vineyard aerial spraying efficiency by analysing Water Sensitive Papers droplet coverage, density, and Number Median Diameter using a MATLAB script. Flight position factor, more than others, influenced the application results. The specific configuration of 2 m altitude, 1.5 m s⁻¹ cruising speed, and inter-row positioning yielded the best results in terms of canopy coverage, minimizing off-target and ground dispersion, and represented the best setting to facilitate droplets penetration, reaching the lowest parts generally more affected from disease. Further research is needed to assess UASS aerial PPP distribution effectiveness and environmental impact in agriculture, crucial for technology implementation, especially in countries where aerial treatments are not yet permitted.

在全球粮食需求不断增加和迫切需要优化生产流程的背景下，植保产品在保护作物免受昆虫、害虫和真菌侵害方面发挥着关键作用，这些昆虫、害虫和真菌是导致植物病害扩散和产量损失的原因。尽管飞机和直升机进行的传统空中喷洒分布不准确，但无人机喷洒系统 (UASS) 提供了低健康风险和运营成本的解决方案，保护农作物和土壤免受物理损坏。本研究探讨了 UASS 飞行高度（距地面 2 m 和 2.5 m）、速度（1 m s ⁻¹ 和 1.5 m s ⁻¹ ）和位置（在座舱盖上方和通过使用 MATLAB 脚本分析水敏纸液滴覆盖范围、密度和数量中值直径，对葡萄园空中喷洒效率进行了研究。飞行位置因素对应用结果的影响最为显着。 2 m高度、1.5 m s ⁻¹ 巡航速度和行间定位的具体配置在冠层覆盖、最小化脱靶和地面分散方面产生了最佳效果，并且代表了促进飞沫渗透，到达最低的部位，通常更容易受到疾病的影响。需要进一步研究来评估 UASS 空中 PPP 分配的有效性和对农业的环境影响，这对于技术实施至关重要，特别是在尚未允许空中处理的国家。