%0 Journal Article
%T Volume of polyethylene bags for development of papaya seedlings in protected environments Volumes de sacolas de polietileno no desenvolvimento de mudas de mamoeiro em ambientes protegidos
%A Tatiane A. C. Faria
%A Edilson Costa
%A Let¨ªcia C. de Oliveira
%A Tiago L. do Esp¨ªrito Santo
%J Engenharia Agr¨ªcola
%D 2013
%I Sociedade Brasileira de Engenharia Agr¨ªcola
%X The objective of this study was to test container of polyethylene bags and protected environments on the papaya seedlings production, from May to August of 2008, in Aquidauana state of Mato Grosso do Sul (MS), Brazil. Five bags of polyethylene were used: 7.5 cm x 11.5 cm, 205.9 cm3; 8.4 cm x 10.6 cm, 238.1cm3; 10.0 cm x 16.5 cm, 525.2 cm3; 12.0 cm x 12.0 cm, 550.0 cm3 and 15.0 cm x 21.5 cm, 1539.8 cm3. These containers were placed in three protected environments: greenhouse; screened nursery with Sombrite  and screened nursery with Aluminet . Because there is no replication of growing environment, each one was considered an experiment. For each cultivation environment, it was adopted a completely randomized design with eight replications of two plants each. Initially, data were submitted to analysis of individual variance of the container (for each cultivation environment), then performing the evaluation of the residual mean squares and the combined analysis of these environments for comparison of protected environments. The greenhouse and nursery with thermal reflector screen produced the best seedlings. The bags of 15.0 x 21.5 cm produced the best papaya seedlings. The Dickson Quality Index pointed the nursery with screen of thermal reflector as the environment that produced the most vigorous seedlings, when using the best container. O objetivo deste trabalho foi testar sacos de polietileno e ambientes protegidos na produ  o de mudas de mamoeiro, de maio a agosto de 2008, em Aquidauana -MS. Foram utilizadas cinco dimens es de sacos de polietileno: 7,5 cm x 11,5 cm, 205,9 cm3; 8,4 cm x 10,6 cm, 238,1 cm3; 10,0 cm x 16,5 cm, 525,2 cm3; 12,0 cm x 12,0 cm, 550,0 cm3, e 15,0 cm x 21,5 cm, 1.539,8 cm3. Estes recipientes foram acomodados em tr¨ºs ambientes protegidos: estufa agr¨ªcola; viveiro telado com Sombrite  e viveiro telado com Aluminet . Por n o haver repeti  o do ambiente de cultivo, cada um foi considerado um experimento. Para cada ambiente de cultivo, foi adotado o delineamento experimental inteiramente casualizado, com oito repeti  es de duas plantas cada. Inicialmente, os dados foram submetidos ¨¤s an¨¢lises de variancias individuais dos recipientes (para cada ambiente de cultivo), realizando-se em seguida a avalia  o dos quadrados m¨¦dios dos res¨ªduos e a an¨¢lise conjunta dos experimentos para a compara  o dos ambientes protegidos. A estufa agr¨ªcola e o telado de termorrefletora produziram as melhores mudas. O recipiente de 15,0 x 21,5 cm produziu as melhores mudas do mamoeiro. O ¨ªndice de qualidade de Dickson apontou o telado de termorrefletora com
%K Sunrise solo
%K recipientes
%K produ  o de mudas
%K Sunrise solo
%K containers
%K seedlings production
%U http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162013000100002