Jenniffer Aparecida Schnitzer

Alternative substrates to substitute xaxim in the cultivation of the primary hybrid Miltonia regnellii Rchb. f. X Oncidium concolor Hook. (Orchidaceae)

The paper had the purpose of evaluating root formation and vegetative development of the acclimatized plants of the primary hybrid Miltonia regnellii Rchb. f. X Oncidium concolor Hook., using alternative substrates to substitute xaxim. Seedlings, with approximately eight months, obtained by in vitro culture with medium height of 6.4 ± 0.5 cm, were grown up in greenhouse with 60% of shadowness, using pots of polipropilene number one, containing the following substrates as treatments: XD= defibered xaxim (control); PBC= sugar cane bagasse powder; PBC:I= sugar cane bagasse powder: estruted polystyrene (1:1, v:v); PBC:E= sugar cane bagasse powder: sphagnum (1:1, v:v); PBC:PC = sugar cane bagasse powder: husk pinus (1:1, v:v); CP= coconut powder and PBC:PC= coconut powder: sugar cane bagasse powder (1:1, v:v). The experimental design was randomized blocks, 1 Engenheira Agrônoma. E-mail: yamamochiyukari@yahoo.com.br. 2 Doutoranda em Agronomia da UEL. Bolsista Capes. 3 Eng° Agr., Dr., Professor Associado do Departamento de Agronomia da UEL. Londrina, PR. E-mail: faria@uel.br 4 Eng° Agr., Dra., Professora Associado do Departamento de Agronomia da UEL. 5 Mestranda em Agronomia da UEL. * Autor para correspondência