Navegando por Autor "Fernandes, Ítalo Ruy"

Agora exibindo 1 - 1 de 1
  • Imagem de Miniatura
    Dissertação
    Acesso aberto (Open Access)
    Processamento de imagens multspectrais para detecção de alterações fisiológicas no milho
    (Universidade Estadual do Norte do Paraná, 2020-06-05) Fernandes, Ítalo Ruy; Souza, Bruno Miguel Nogueira de; https://orcid.org/0000-0002-9326-7614; http://lattes.cnpq.br/3621235660431170; Matsumoto, Leopoldo Sussumu; https://orcid.org/0000-0001-5102-545X; http://lattes.cnpq.br/0857955043436449; Matsumoto, Leopoldo Sussumu; https://orcid.org/0000-0001-5102-545X; http://lattes.cnpq.br/0857955043436449; Sgarbi, Ederson Marcos; https://orcid.org/0009-0004-7460-7283; http://lattes.cnpq.br/4999862994006825; Marrafon, Mateus; http://lattes.cnpq.br/5740779198324583; Sauer, Aline Vanessa; https://orcid.org/0000-0003-3164-9710; http://lattes.cnpq.br/3853729166385893; Menolli, André Luiz; https://orcid.org/0000-0002-4755-8031; http://lattes.cnpq.br/0048431988260726
    The present work aimed to identify nutritional stress (NPK) in corn by processing images at different wavelengths. The experiment was carried out in a greenhouse, using PVC tubes with 2350 g of washed sand for corn cultivation. The trial consisted of four treatments: a set of tubes that received complete nutrient solution, complete solution minus nitrogen, complete solution minus phosphorus, and complete solution minus potassium, with 4 replications. The solution was administered (50 mL every 7 days) over a period of 26 days. The tubes were photographed daily by the Slantrange 3p sensor, which has four bands (NIR, RED EDGE, RED, and GREEN). The images were submitted to histogram analysis, correlation, intersection, and application of reflectance calculation. As a preliminary result, differences between treatments were observed from the fourth day onward; both histogram analysis and reflectance calculation proved to be capable of establishing a pattern for differentiating the treatments.