Evaluation of Drone Silicon Application Effectiveness for Controlling Pyricularia oryzae in Rice Crop in Valencia (Spain) Using Multispectral Satellite Data
[EN] Silicon-based treatments applied with UAV technology were evaluated over two consecutive rice-growing seasons (2024¿2025) under Mediterranean field conditions. Silicon and silicon¿manganese applications significantly reduced the Pyricularia infestation index (PII) by up to 77% at 35 DAS compare...
| Autores: | , , , , |
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| Tipo de recurso: | artículo |
| Fecha de publicación: | 2026 |
| País: | España |
| Institución: | Universitat Politècnica de València (UPV) |
| Repositorio: | RiuNet. Repositorio Institucional de la Universitat Politécnica de Valéncia |
| Idioma: | inglés |
| OAI Identifier: | oai:dnet:riunet______::99566272ae23b413bc58989a0bf46f39 |
| Acceso en línea: | https://riunet.upv.es/handle/10251/235969 |
| Access Level: | acceso abierto |
| Palabra clave: | Satellite data Sentinel-2 Agronomy Drone Pyricularia Vegetation index Rice |
| Sumario: | [EN] Silicon-based treatments applied with UAV technology were evaluated over two consecutive rice-growing seasons (2024¿2025) under Mediterranean field conditions. Silicon and silicon¿manganese applications significantly reduced the Pyricularia infestation index (PII) by up to 77% at 35 DAS compared to the control (p < 0.01). Grain yield increased from 1717 kg ha¿1 in control plots to 4328 kg ha¿1 under silicon treatment and 3958 kg ha¿1 under silicon¿manganese treatment. In contrast, Sentinel-2 spectral bands (B4 and B8) and vegetation indices (NDVI, RVI, NDRE, IRECI) were mainly influenced by interannual variability rather than treatment effects. While canopy reflectance showed high residual variability at later growth stages, agronomic and sanitary parameters consistently responded to silicon-based applications. These results indicate that foliar silicon, particularly when combined with manganese, improves Pyricularia suppression and yield stability under variable environmental conditions, although satellite-derived vegetation indices were more sensitive to year effects than to treatment differences. |
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