Uso de pregerminación controlada de semillas en combinación con aislamientos de trichoderma sp., para el tratamiento de plantas nativas y su posterior uso en procesos de revegetalización en zonas de ronda de la microcuenca Quebrada Grande, Municipio de San Antonio de Tequendama (Cundinamarca): informe final de investigación

Abstract

The Quebrada Grande Microbasin, belonging to the Municipality of San Antonio de Tequendama, is of great importance for its inhabitants, since this is the base of its Veredal aqueduct; However, some areas of its hydraulic rounds present major disturbances for the expansion of the agricultural and livestock border. Among the possibilities of the restoration of these areas, the revegetation with native species, the case was proposed the encenillo (Weinmannia tomentosa), the oak (Quercus humboldtii), the wax laurel (Myrica pubescens), the silver yarumo (Cecropia sp ). .), cinnamon (Hedyosmun bonplandianum). However, the chemical characteristics control system can not be used. Yeasts and the technique of controlled seed pregermination in two models in the plant, against Rhizoctonia sp., And Botrytis sp., Causing the first of decay in the seeds and the neck of the root and the second cause of the gray mold in leaves, stems flowers and fruits, in native as well as commercial species. In the evaluations in the plant of three isolates of Trichoderma and two of yeasts; an isolation of Trichoderma originated in a soil of the municipality of Tenjo (La Punta village) was chosen, due to the high biocontrol activity against Botrytis and Rhizoctonia, in the latter case in combination with the active seed pregermination technique. The use of this microorganism (Trichoderma-Tenjo) together with the pregermination, a viable strategy for the treatment of seeds of native plants, in order to be used in the processes of revegetation, in the Quebrada Grande Microbasin.