Resumo

AVILA-VELEZ, Edier Fernando; ESCOBAR-ESCOBAR, Natalia  e  MORANTES-CHOCONTA, Carlos Francisco. Applying satellite images to spectral signature development of maize production (Zea mays L. under Colombia's middle tropics conditions. Entramado [online]. 2019, vol.15, n.2, pp.256-262. ISSN 1900-3803.  https://doi.org/10.18041/1900-3803/entramado.2.5734.

Maize is currently the world's second largest crop in terms of production, after wheat and rice. It is the first cereal as for grain yield per hectare and the second, after wheat, regarding total production. Maize has great economic importance worldwide, both as human and/ or animal food, and as a source of a large number of industrial products. New digital technologies are allowing greater monitoring of farming production stages. This research developed the spectral signature of maize fields ground covers across different growth stages (2 months, 2.3 months and 4.3 months). Similarly this research paper proposes the application of a methodology based on four phases: 1. Maize crop georeferencing, 2. Satellite images selection, 3. Radiometric calibration of images 4. Spectral signature development of maize crops. Spectral response or signature of maize crops at visible and near-infrared wavelengths was obtained, indicating significant changes in crops growth. The use of satellite imagery becomes an interesting tool that introduces an approach towards more accurate and controlled monitoring systems in agricultural production.

Palavras-chave : Energy; agriculture; cultivation; agricultural technology.

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