Evaluación de la germinación de semillas de aliso (Alnus acuminata) en tres sustratos y dos procesos pregerminativos en el vivero de la ESPOCH.

Abstract

This research aimed to evaluate the germination of alder seeds (Alnus acuminata) and the growth of seedlings in order to determine the best treatment. This research was developed in the Espoch forest nursery. A Random Complete Block Design (DBCA) was established with a bifactorial arrangement composed of 7 treatments with 3 repetitions. The trial included the phases of preparation and disinfection of the forest nursery bed, preparation of pre-germination treatments, preparation and disinfection of substrates, filling of covers and direct sowing. The variables evaluated were percentage of germination developed in 3 stages at 20, 40 and 60 days and vegetative development. It was considered: Height (cm), Diameter height of the neck (mm) and presence of true leaves at 60 days after of sowing, for the analysis of variance and separation of means, the Tukey test was used at a reliability level of 5%. The results obtained indicated that the best treatments for germination at 20 days were 46.66%, at 40 days T3 obtained 70% and T4 60% germination, while at 60 days there were no more germinated seeds. The best treatment for the growth of the seedling in height, DHN and presence of true leaves are found in T2, with an average height of 1.71 centimeters and DHN of the seedling an average of 3.61 millimeters in the presence of true leaves no treatment influenced the appearance. Concluding the best treatment for germination was found in T3 and T4 and for seedling growth in T2. Therefore, the use of research substrates is recommended for better growth in seedlings.