Evaluación de cuatro sustratos para la propagación sexual de Swietenia macrophylla King (caoba) en la parroquia General Proaño cantón Morona provincia de Morona Santiago.

Abstract

This research aimed to evaluate four substrates for the sexual propagation of the forest species Mahogany (Swietenia macrophylla King) in the General Proaño town, Morona city, Morona Santiago province. For which, first a forest nursery (2.50m high, 6m long, and 3m wide) was built including covers. The experimental design used a complete randomized block that had 4 treatments and three repetitions. The variables evaluated were height (cm), neck height diameter (mm), and the number of leaves at 15, 30, and 45 days after the plants germinated. The germination calculation was done by counting the number of seeds sown and the number of germinated seeds. The number of living plants and the number of seeds was counted to calculate survival. The results were ratified by recording data, which were tabulated and represented graphically, obtaining higher values using substrate 2: 50% earth, 20% sand, and 30% organic fertilizer, which showed a height of 21.27 cm, height diameter of the neck of 17.86 mm and the number of leaves with 4.94 of the data taken 45 days after germination. It was concluded that substrate 2 shows the best results in both development and growth. It is recommended to have the greenhouse disinfected to avoid pests or diseases.