A demanda por informações silviculturais de espécies florestais alternativas para reflorestamentos com fins econômicos, entre as quais incluem os métodos de produção de mudas, tem aumentado nos últimos anos. Neste trabalho, avaliou-se a influência de volumes de tubetes, com dimensões de 115, 180 e de 280 cm³, no crescimento de mudas de guanandi (Calophyllum brasiliense Cambess.) e cedro-australiano (Toona ciliata M. Roem. var. australis (F. Muell.) Bahadur). O substrato utilizado foi composto por uma mistura de 80% de substrato comercial e 20% de argila. Foram avaliados o diâmetro de colo e a altura das mudas aos 60, 90, 120 e 150 dias após a repicagem. Nessa última ocasião, determinou-se também o peso de massa seca da parte aérea, do sistema radicular e total, bem como o Índice de Qualidade de Dickson. Houve efeito do volume do tubete sobre as características das mudas, sendo o cedro-australiano a espécie mais responsiva. Conclui-se que para o guanandi o tubete mais indicado é o de 180 cm³ e para o cedro-australiano, o de 280 cm³.

The search for silvicultural information, including the seedling production methods, about alternative forest tree species for forestry with economic purposes have increased in the last years. In this work, the influence of the volume of tubes at sizes of 115, 180 and 280 cm³, on the growth of seedlings of Guanandi (Calophyllum brasiliense Cambess.) and Australian Cedar (Toona ciliata M. Roem. var. australis (F. Muell.)) was evaluated. The substrate used was composed by mixture of 80% of commercial substrate and 20% of clay. The collar diameter and the height of the seedlings were evaluated at 60, 90, 120 and 150 days after transplantation. In the last mensuration the dry weight of the aerial plant, of the root system and the total weight, and the Quality Index of Dickson were also determined. There was an effect of the tube volume on the growth and the quality of the seedlings, and the reaction of the Australian Cedar was greater. It was concluded the, for the Guanandi, the best tube is that of 180 cm³ and for the Australian Cedar is the tube of 280 cm³.

Abstract The quality of seedlings of Anadenanthera macrocarpa Benth. Brenan, Schinus terebinthifolius Raddi, Cedrela fissilis Vell. e Chorisia speciosa St. Hill produced in tubes with volumes of 280, 180, 115 e 56 cm3 were. Through the growing analysis and its morphologic characteristics, it was known that, through 180 days, the seedlings that had been cultivated in tubes for seedlings presented, in a general way the following aspects. It was observed growing and morphlogic characteristics that were significantly superior for the 280 cm3 tube for seedlings that didn´t reflect in a larger growing through 180 days after the field sowing. In these stipulated conditions, it was also realized that there were no significant differences in the survival of plants from different tubes for, except for Cedrela fissilis Vell.

Resumo Avaliou-se a qualidade de mudas de Anadenanthera macrocarpa Benth. Brenan, Schinus terebinthifolius Raddi, Cedrela fissilis Vell. e Chorisia speciosa St. Hill, produzidas em tubetes com volumes de 280, 180, 115 e 56 cm3. Através da análise de crescimento e das características morfológicas, constatou-se aos 180 dias, que as mudas produzidas no tubete de 280 cm3 apresentaram de um modo geral, crescimento e características morfológicas significativamente superiores aos demais tubetes, que não refletiram em maior crescimento, aos 180 dias após o plantio no campo. Nestas condições, verificou-se também não haver diferença significativa na sobrevivência das plantas originárias dos tubetes de diferentes volumes, exceto para a Cedrela fissilis Vell.