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após 8 meses de cultivo. Com base nos dados obtidos, pode-se concluir que os substratos alternativos utilizando bagaço de canade- açúcar podem ser indicados e utilizados no cultivo de orquídeas destes gêneros, preservando o xaxim do extrativismo. ABSTRACT Several researches have been done to find a substitute for xaxim (Dicksonia sellowiana Hook.) plant fiber in the cultivation of orchid seedlings. This study aimed to evaluate the use of different sugarcane bagasse formulations as an alternative substrate to seedlings cultivation of the hybrids: Vanda tecelata x Vanda gordon dillon and BLC. Cattleya drumbeat triumph X BLC. Cattleya pastoral. In this study, three substrates were tested: charcoal + sugarcane bagasse, pine bark + sugarcane bagasse, and ceramic shards + sugarcane bagasse. Ceramic shards + xaxim plant fiber formulation was used as a control substrate. After eight months of cultivation, growth and root development were analyzed. Results show that the use of sugarcane bagasse as an alternative substrate may be suitable to the cultivation of these genres of orchids, preserving xaxim from exploitation. Palavras-chave Palavras-chaves: Substrato de cana-de-açúcar, Orchidaceae, Vanda, Cattleya.
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