Crescimento vegetativo de Phalaenopsis sp. híbrido (Moon Orchid) em resposta à intensidade luminosa e concentração de fertilizantes
DOI:
https://doi.org/10.1590/2447-536X.v30.e24269Palavras-chave:
flor , Orchidaceae, plantas tropicais, rede de sombreamentoResumo
As orquídeas são uma das plantas decorativas florais mais populares. Dentre as diversas espécies de orquídeas, Phalaenopsis sp. ou a moon orchid é popular por causa de sua cor, formato e tamanho distintos. No entanto, as orquídeas apresentam taxa de crescimento lenta devido à sua longa fase juvenil; portanto, é necessária modificação da técnica de cultivo para impulsionar seu crescimento, ou seja, sombreamento e aplicação de fertilizantes. Esta pesquisa foi realizada com o objetivo de obter a melhor porcentagem de sombra e concentração de fertilizante para aumentar o crescimento da moon orchid. O experimento foi conduzido de junho a dezembro de 2022 na estufa de Bale Tatanan Padjadjaran, Faculdade de Agricultura, Universitas Padjadjaran, Jatinangor, Sumedang, Jawa Barat. O experimento utilizou o delineamento de parcelas subdivididas com oito tratamentos de sombra e fertilizantes. As plantas foram cultivadas em duas intensidades de sombreamento, 60% e 70%, e posteriormente tratadas com quatro concentrações diferentes de compostos fertilizantes foliares completos (1, 2, 3 e 4 g L-1). Os resultados mostraram que 60% de sombra combinada com 2 g L-1 de fertilizante foliar aumentou significativamente a área foliar e o comprimento da raiz, enquanto 70% de sombra combinada com 4 g L-1 aumentou significativamente a área foliar, número de raízes e o CCI da moon orchid.
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