Efecto de tratamientos pre germinativos y cuatro sustratos en la propagación sexual de Cordia alliodora RUIZ & PAV. en el cantón Penipe, provincia de Chimborazo.

Abstract

This study aimed to test the effect of pre-germination treatments and four substrates on the sexual propagation of Cordia alliodora in Penipe City under nursery forestry conditions. The trial included the implementation phases of a temporary nursery, species identification, seed collection, substrate preparation, application of pre-germination treatments, sheathing, sowing, irrigation, and weed control. A randomized complete block design (RCBD) was used, with a bifactorial arrangement with four repetitions and three seeds per experimental unit. The factors evaluated were: pre-germination treatments and substrates, where the substrates were combined: S1: River sand 100%, S2: River sand 25% Black earth 25% Paddy rice 25% Chicken manure 25%, S3: Sand from river 50% Black earth 30% Rice chaff 10% Chicken manure 10%, S4: River sand 10% Black earth 50% Rice chaff 5% Chicken manure 35% with the treatments: P1: Control, P2: Immersion in water coconut and P3: Immersion in water at room temperature. It was determined that the most effective substrate for the emergence percentage and the height variable at 60 days was S2, with 74.90% in the emergence and in height at 5.53 cm. For the height variable at 45 days, the best pre-germination treatment was P2 with 3.71 cm. While for the diameter at neck height (DNH), the best treatment was T11 with 11.50 mm. It was concluded that none of the treatments applied was economically profitable, and it is recommended to propagate the species in its climatic conditions.