Evaluación de tres sustratos para la producción de plantas de melina (Gmelina arborea) en vivero, en la provincia de Orellana.

Abstract

In the research entitled: Evaluation of three substrates to produce melina plants (Gmelina arborea) in nursery, in the province of Orellana, two commercial substrates (pellets; Jiffys and Pro-mix bx substrate) and a non-commercial substrate (cocoa husk) were used, to determine through morphological development, production costs and nutritional content, which is the optimal treatment to produce melina in nursery. The study factor was ten plants randomly selected per replicate and thirty per treatment; data were collected thirty days after replanting. ADEVA analysis of variance and Tukey 0.05% significance tests were used to tabulate data. The variables evaluated were height, diameter, wet and dry weight of plant and root, percentage of survival, vigor and width, length, color and number of leaves, in most variables the favorable result was in T3 (cocoa husk), except root length which was in T2 (Promix bx substrate), which indicated that the best morphological development of plants was in T3. According to the analysis of the substrates, it was determined that the content of micro and macro nutrients at optimum levels was in T3. T3, followed by T1 (Jiffy Pellets), and in last place T2. The economic analysis established that lower production costs are required in T2 and T3, while in T1 the costs are higher. T1 costs are higher. Considered all the factors, it was concluded that the optimum substrate for melina production in vivarium to produce melina in nursery is T3 (cocoa husk). In addition, it is recommended to carry out research trials using mixtures of Pro-mix and cocoa husk substrates in different percentages of cocoa husk in different percentages of concentration.