Efecto de Trichoderma harzianum sobre esquejes de tacaco (Sechium tacaco)
Fecha
2024
Tipo
artículo original
Autores
Muñoz López, Karen María
Monge Pérez, José Eladio
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Objetivos: evaluar el efecto de dos dosis de Trichoderma harzianum sobre el enraizamiento y crecimiento de esquejes de tacaco (Sechium tacaco). Metodología: se utilizó esquejes de brotes secundarios con al menos tres nudos. En la fase de establecimiento en invernadero, se utilizó una dosis de 0,30mg de ácido indol butírico (AIB) por esqueje. Luego de alcanzar el enraizamiento óptimo, se pasó a la fase de aclimatación en casa sombra, donde se aplicó vía “drench”, a los 0, 7 y 15 días después del trasplante, tratamientos con dosis de 5 y 10ml/l del producto Trichofos (T. harzianum, a 2.0 x 107 ufc/ml), y un tratamiento testigo con agua destilada. Resultados: El testigo obtuvo un valor significativamente mayor de peso seco de raíz (2,523.06mg/planta), con respecto a los tratamientos con 5 y 10ml/l de Trichofos (704.12 y 1,175.21mg/planta, respectivamente). Para la concentración de T. harzianum en el sustrato, se hallaron diferencias significativas entre el testigo y la dosis de 5ml/l de Trichofos (82.5 y 1,525ufc/g de T. harzianum, respectivamente). No se hallaron diferencias significativas entre tratamientos para las demás variables. En todos los tratamientos, el porcentaje de supervivencia de esquejes varió entre 83-100%. Conclusiones: No se recomienda el uso de T. harzianum en el proceso de aclimatación de esquejes de tacaco, hasta que se genere información sobre su compatibilidad con otros organismos rizosféricos. El proceso de aclimatación de las plantas resultó exitoso, según la metodología empleada. Este trabajo constituye el primer informe publicado sobre el efecto de Trichoderma harzianum sobre Sechium tacaco.
Objectives: to evaluate the effect of two doses of Trichoderma harzianum on the rooting and growth of tacaco (Sechium tacaco) cuttings. Methodology: secondary-shoot cuttings with at least three nodes were used. In the greenhouse establishment phase, a dose of 0.30mg of indole-butyric acid (IBA) per cutting was used. After reaching optimal rooting, we moved on to the acclimatization phase in a shade house, where treatments with doses of 5 and 10ml/l of the product Trichofos (T. harzianum, at 2.0 x 107 cfu/ml), and a control treatment with distilled water were applied via “drench” at 0, 7 and 15 days after transplanting. Results: The control obtained a significantly higher value of root dry weight (2,523.06mg/plant), compared to the treatments with 5 and 10ml/l of Trichofos (704.12 and 1175.21mg/plant, respectively). Regarding the concentration of T. harzianum in the substrate, significant differences were found between the control and the dose of 5ml/l of Trichofos (82.5 and 1,525cfu/g of T. harzianum, respectively). No significant differences were found between treatments for the other variables. In all treatments, the survival percentage of cuttings varied between 83-100%. Conclusions: The use of T. harzianum in the acclimatization process of tacaco cuttings is not recommended, until information is generated on its compatibility with other rhizospheric organisms. The acclimatization process of the plants was successful, according to the methodology used. This work constitutes the first published report on the effect of Trichoderma harzianum on Sechium tacaco.
Objectives: to evaluate the effect of two doses of Trichoderma harzianum on the rooting and growth of tacaco (Sechium tacaco) cuttings. Methodology: secondary-shoot cuttings with at least three nodes were used. In the greenhouse establishment phase, a dose of 0.30mg of indole-butyric acid (IBA) per cutting was used. After reaching optimal rooting, we moved on to the acclimatization phase in a shade house, where treatments with doses of 5 and 10ml/l of the product Trichofos (T. harzianum, at 2.0 x 107 cfu/ml), and a control treatment with distilled water were applied via “drench” at 0, 7 and 15 days after transplanting. Results: The control obtained a significantly higher value of root dry weight (2,523.06mg/plant), compared to the treatments with 5 and 10ml/l of Trichofos (704.12 and 1175.21mg/plant, respectively). Regarding the concentration of T. harzianum in the substrate, significant differences were found between the control and the dose of 5ml/l of Trichofos (82.5 and 1,525cfu/g of T. harzianum, respectively). No significant differences were found between treatments for the other variables. In all treatments, the survival percentage of cuttings varied between 83-100%. Conclusions: The use of T. harzianum in the acclimatization process of tacaco cuttings is not recommended, until information is generated on its compatibility with other rhizospheric organisms. The acclimatization process of the plants was successful, according to the methodology used. This work constitutes the first published report on the effect of Trichoderma harzianum on Sechium tacaco.
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ENRAIZAMIENTO, ESQUEJE, PROPAGACIÓN, PLANTAS