the effect of growth bed containing organic substrates and irrigation period on the growth of araucaria excelsa l.

Araucaria excelsa l. of araucariaceae family is a beautiful coniferwhich has a high economic importance in the flower industry. a factorial experimentbased on randomized completely block design with two factors: 1.irrigation intervals in 2, 4 and 6 days (i1, i2 and i3) and 2. the growth bed inpots 3 l included m1 (100 % v/v cocopeat), m2 (100% municipal wastecompost), m3 (100 % vermicompost), m4 (25 % cocopeat + 25 % perlite + 25% soil + 25 % municipal waste compost), m5 (25 % cocopeat + 25 % vermicompost+ 25 % soil + 25 % perlite) and m6 (25 % vermicompost +25 % municipalwaste compost + 25 % perlite + 25 % soil) was conducted with 18treatments in three replications. traits that were measured in this experimentincluded height of the crown, number of lateral shoot, branches distance,number of branches, length of lateral shoot, fresh weight of root and shoot,total fresh weight, dry weight of root and shoot, total dry weight. the resultsshowed that the growth indices increased in 100 % vermicompost. thetreatment i1m3 was the best treatment in the growth of plant. the 100 % vermicompostbed had a better response to 6 days irrigation than in the otherbeds, but it was observed a considerable difference in the growth indicesbetween 6 days and 2 days periods of irrigation.