Water absorption and performance of the Kalanchoe grown in alternative substrates/Consumo hidrico e desempenho de Kalanchoe cultivado em substratos alternativos

• Published in: Ciência rural 2010-03, Vol.40 (3), p.534
• Main Authors: de Souza, Angelica Rossana Castro, Peiter, Marcia Xavier, Robaina, Adroaldo Dias, Soares, Fatima Cibele, Parizi, Ana Rita Costenaro, Ferraz, Rafael Camargo
• Format: Article
• Language: Spanish
• Subjects: Water balance (Hydrology)
• ISSN: 0103-8478

With the increase in the flowers and ornamental crops consumption, the search for alternative elements to the substrates, became to necessary reduce spends the production. Besides, it's important to quantify the physics--hydric characteristics and the manner to establish the calendar of the irrigations using these materials. Based in this, this research had as the mainly purpose to evaluate the performance and the water consumption of the Kalanchoe blossfeldiana Poelln, cv. Gold Jewel in ten alternative substrates and to define the most indicated to the commercial production in environmental conditions of the west- central of the Rio Grande do Sul State. It was tested substrates composed by different proportions of rice shell, ash of rice shell, decomposed organic substance, cattle and poultry manure. The research was accomplished in greenhouse, in a complete randomized experiment, with four replications. In the end of the period it was evaluated: the height, the number of leaves, the number of inflorescence, the number of flowers in each inflorescence and the plants' canopy diameter, in the different treatments. By the results it can be concluded that, to the production of the plants substrates more indicated are 100% in organic substance volume and 50% in organic substance volume + 50% in cattle manure. Key words: irrigation, water balance, forune-flower. Com o crescente consumo de flores e plantas ornamentais de vaso, a busca por elementos alternativos para substratos torna-se necessaria, a fim de reduzir os custos da producao. Alem disso, e importante quantificar as caracteristicas fisico-hidricas de forma a estabelecer o calendario de irrigacoes com base nesses materiais. A partir disso, este trabalho teve por objetivos avaliar o desempenho e o consumo de agua de Kalanchoe blossfeldiana Poelln, cultivar 'Gold Jewel', em 10 substratos alternativos, e definir os mais indicados para a producao comercial nas condicoes ambientais da regiao centro-oeste do Estado do Rio Grande do Sul. Foram testados substratos compostos por diferentes proporcoes de casca de arroz carbonizada, cinzas de casca de arroz, materia organica domestica decomposta, esterco bo-vino e esterco de aves. O experimento foi conduzido em casa de vegetacao, em delineamento experimental inteiramente casualizado, com quatro repeticoes. No final do ciclo, foram avaliados: altura, numero de folhas, numero de inflorescencias, numero de flores e diametro da copa das plantas nos diferentes tratamen